Army Aviation Maintenance (AAC) Certification Exam — Questions and Answers
Question 1: What must be done after treating corrosion on an Army aircraft to restore protection to the affected area?
- Apply a clear lacquer overcoat to seal the treated bare metal area
- Restore the full protective finish system including primer and topcoat paint per technical manual specifications (Correct answer)
- Apply a new layer of corrosion inhibiting compound only, without repainting the surface
- Leave the treated area as bare metal to allow monitoring for corrosion recurrence
Correct answer: Restore the full protective finish system including primer and topcoat paint per technical manual specifications
After corrosion treatment, the complete protective finish system — including primer and topcoat paint — must be restored per the applicable technical manual to re-establish full corrosion protection.
Question 2: According to Army maintenance doctrine, who holds the ultimate responsibility for ensuring the unit's Preventive Maintenance Checks and Services (PMCS) program is properly established and executed?
- The Battalion Maintenance Officer
- The individual Crew Chief
- The Unit Commander (Correct answer)
- The Pilot-in-Command
Correct answer: The Unit Commander
While pilots, maintenance officers, and crew chiefs all have critical roles, the unit commander is ultimately responsible for all aspects of the unit's operations, including the proper execution, training, and enforcement of the maintenance and PMCS program to ensure readiness.
Question 3: An Aviation Safety Action Message (ASAM) is issued to Army aviation units to:
- Disseminate time-critical safety information and required actions for aviation systems (Correct answer)
- Schedule periodic standardization flights
- Update the Army aviation training syllabus
- Notify units of upcoming depot maintenance windows
Correct answer: Disseminate time-critical safety information and required actions for aviation systems
ASAMs communicate urgent safety information and mandatory actions required to maintain airworthiness or prevent accidents.
Question 4: What is the purpose of anodizing aluminum aircraft components in Army aviation?
- To prepare aluminum surfaces for welding repair procedures
- To increase the weight-bearing strength and hardness of aluminum structural parts
- To create a hard, corrosion-resistant aluminum oxide layer on the component surface (Correct answer)
- To improve electrical conductivity for bonding and grounding purposes
Correct answer: To create a hard, corrosion-resistant aluminum oxide layer on the component surface
Anodizing creates a controlled, hard aluminum oxide layer on the component surface that is highly resistant to corrosion and provides an excellent base for subsequent paint adhesion.
Question 5: A maintenance company commander is faced with two non-mission-capable CH-47s with identical faults. A critical mission requires one helicopter to be operational immediately, and the required part is not available through supply. The commander approves taking a serviceable engine component from one grounded aircraft to install on the other to return it to service. What is this maintenance action called and what is the minimum level of approval authority?
- Lateral Support; Supply Support Activity (SSA) Chief
- Emergency Work Order; Maintenance Officer
- Controlled Exchange; Company Commander
- Cannibalization; Battalion Commander or designated representative (Correct answer)
Correct answer: Cannibalization; Battalion Commander or designated representative
This action is defined as cannibalization, which is the removal of a serviceable part from one non-mission-capable piece of equipment to install on another to restore it to operational condition. Army policy dictates that cannibalization authority is typically held at the battalion commander level to ensure the action is justified by mission necessity and properly managed.
Question 6: Which of the following is a primary purpose of The Army Maintenance Management System - Aviation (TAMMS-A) as outlined in DA PAM 738-751?
- To provide a standardized system for managing Army-wide personnel records and promotions.
- To schedule and coordinate all Army aviation flight operations and crew assignments.
- To track and manage the maintenance, usage, and historical records of Army aircraft and associated equipment. (Correct answer)
- To serve as the primary system for ordering all classes of supply for aviation units.
Correct answer: To track and manage the maintenance, usage, and historical records of Army aircraft and associated equipment.
DA PAM 738-751 explicitly states that TAMMS-A is designed for the preparation and management of forms and records needed to manage maintenance, control the use, and report on Army aircraft and associated equipment.
Question 7: A maintenance team is performing a 100-hour inspection on a UH-60. They note several scheduled maintenance items that are due at different intervals (e.g., daily, 40 hours, monthly). Which form is specifically designed to list these special inspections and time-change components to ensure they are tracked and completed?
- DA Form 2408-13-1, Aircraft Inspection and Maintenance Record
- DA Form 2408-12, Army Aviator's Flight Record
- DA Form 2408-18, Equipment Inspection List (Correct answer)
- DA Form 2410, Component Removal and Repair/Overhaul Record
Correct answer: DA Form 2408-18, Equipment Inspection List
DA Form 2408-18, Equipment Inspection List, is used to record and track special inspections and components that have a scheduled replacement or inspection interval different from the aircraft's primary inspection schedule. This form ensures these critical, time-sensitive tasks are not overlooked.
Question 8: What is the definition of aircraft airworthiness in the context of Army aviation?
- The aircraft is in a condition for safe operation in accordance with applicable standards (Correct answer)
- The aircraft has no open faults on the DA Form 2408-13-1
- The aircraft has completed all scheduled phase maintenance
- The aircraft has been approved for flight by the aviation brigade commander
Correct answer: The aircraft is in a condition for safe operation in accordance with applicable standards
Airworthiness means an aircraft meets all applicable standards and is in a condition suitable for safe flight operations.
Question 9: What is the first step a maintenance technician should take when discovering corrosion on an Army aircraft?
- Document the finding on the appropriate maintenance form (Correct answer)
- Apply a corrosion inhibiting compound immediately to stop progression
- Notify the pilot and ground the aircraft pending depot review
- Remove all paint from the affected area before assessment
Correct answer: Document the finding on the appropriate maintenance form
The first step is to document the finding on the appropriate maintenance form (DA Form 2404) so the discrepancy is officially recorded and can be properly assessed and tracked.
Question 10: What does the acronym CPCP stand for in Army aviation maintenance?
- Component Protection and Coating Procedure
- Corrosion Prevention and Control Program (Correct answer)
- Corrosion Prevention Compliance Protocol
- Component Preventive Coating Program
Correct answer: Corrosion Prevention and Control Program
CPCP stands for Corrosion Prevention and Control Program, which establishes systematic procedures for preventing and treating corrosion on Army aircraft.
Question 11: When an Army aviation unit receives new GSE from the supply system, what is the first required action?
- Request a technical inspection from AMCOM
- Perform a receipt inspection and establish historical records (Correct answer)
- Submit the equipment to the AGE flight for acceptance testing
- Place the equipment immediately into operational service
Correct answer: Perform a receipt inspection and establish historical records
New equipment must undergo a receipt inspection to verify condition and completeness, and historical records must be established upon receipt.
Question 12: A CH-47F is due for its 400-hour Phased Maintenance Inspection (PMI). The maintenance platoon sergeant is briefing the team. What is the defining characteristic of a PMI that they should emphasize?
- It replaces the need for daily inspections for the next 30 days.
- It is a quick visual check performed exclusively by the aircrew between missions.
- It is a comprehensive inspection divided into sequential segments to minimize aircraft downtime. (Correct answer)
- It is an unscheduled inspection driven by a specific component failure.
Correct answer: It is a comprehensive inspection divided into sequential segments to minimize aircraft downtime.
A Phased Maintenance Inspection (PMI) is a thorough, in-depth inspection that is broken down into numbered phases or packages. This approach allows significant maintenance to be performed in manageable segments, reducing the total time the aircraft is non-mission capable compared to one single, massive inspection event.
Question 13: In the Army supply system, which class of supply encompasses repair parts, components, and assemblies required for aircraft maintenance?
- Class V
- Class III
- Class IX (Correct answer)
- Class VII
Correct answer: Class IX
Class IX consists of repair parts and components, including kits, assemblies, and subassemblies, that are required for maintenance support of all equipment. Class III is Petroleum, Oils, and Lubricants (POL); Class V is Ammunition; and Class VII is Major End Items (e.g., the entire helicopter).
Question 14: A maintenance unit has two identical aircraft; one is mission capable, and the other is non-mission capable (NMC) due to a faulty transmitter. A high-priority mission requires a second aircraft, but the replacement transmitter will not arrive in time. The commander authorizes the removal of the working transmitter from the NMC aircraft to install on the mission-required aircraft. What is this maintenance action called, and what is a key documentation principle?
- Lateral Support; documented as a temporary loan between two separate logbooks.
- Cannibalization; requires documentation of the part removal on the forms of the donor aircraft. (Correct answer)
- Robbing; requires no special documentation beyond standard removal/installation.
- Component Swapping; authorized by the maintenance chief and noted in the shift log.
Correct answer: Cannibalization; requires documentation of the part removal on the forms of the donor aircraft.
This action is defined as cannibalization: the removal of a serviceable part from one piece of equipment to install it on another to restore it to operational condition. All such actions must be meticulously documented in the maintenance records (e.g., DA Form 2408-13-1) of both the donor and receiving aircraft to maintain accountability and record integrity.
Question 15: An AVUM maintenance platoon needs to replace a frequently used hydraulic fitting on a CH-47F to get it back to Fully Mission Capable (FMC) status. The part is needed immediately to meet a mission timeline. What is the quickest, most appropriate source for the maintenance team to check first for this common-use part?
- A direct requisition to the Depot-level supply.
- The aircraft's onboard spare parts kit.
- The supporting Aviation Intermediate Maintenance (AVIM) company.
- The unit's Prescribed Load List (PLL). (Correct answer)
Correct answer: The unit's Prescribed Load List (PLL).
The Prescribed Load List (PLL) is a list of high-demand, common-use repair parts stocked at the unit level specifically to reduce maintenance delays for routine repairs. It is the first and fastest source to check before initiating a requisition to a higher level of supply.
Question 16: During daily maintenance on an AH-64 Apache, a technician discovers a fault. The fault is documented, but the required repair parts are not immediately available, and the fault does not ground the aircraft. According to DA PAM 738-751, which form is used to document and track this uncorrected fault?
- DA Form 2408-16, Aircraft Component Historical Record
- DA Form 2408-13-1, Aircraft Inspection and Maintenance Record
- DA Form 2408-14-1, Uncorrected Fault Record (Aircraft) (Correct answer)
- DA Form 2408-5, Equipment Modification Record
Correct answer: DA Form 2408-14-1, Uncorrected Fault Record (Aircraft)
DA Form 2408-14-1 is the specific form introduced for aviation use to track uncorrected faults on an aircraft that do not render it non-mission capable. It serves as a running list of discrepancies that need to be addressed when parts or time become available.
Question 17: The Airworthiness Release (AWR) for a new Army aircraft type is issued by:
- Program Executive Office Aviation (PEO Aviation) or the Army Airworthiness Authority (Correct answer)
- The unit commander after acceptance inspection
- The Aviation Center of Excellence (ACOE) Commander
- The FORSCOM Aviation Officer
Correct answer: Program Executive Office Aviation (PEO Aviation) or the Army Airworthiness Authority
The Army Airworthiness Authority (under PEO Aviation) issues the Airworthiness Release certifying that an aircraft type meets Army airworthiness standards.
Question 18: Which of the following forms serves as the primary record for documenting faults found during pre-flight, in-flight, and post-flight inspections, as well as the corrective actions taken to resolve those faults?
- DA Form 2408-18, Equipment Inspection List
- DA Form 2408-19-3, Engine Component Operating Hours Record
- DA Form 2408-13-1, Aircraft Inspection and Maintenance Record (Correct answer)
- DA Form 2408-12, Army Aviator's Flight Record
Correct answer: DA Form 2408-13-1, Aircraft Inspection and Maintenance Record
DA Form 2408-13-1, Aircraft Inspection and Maintenance Record, is the primary form used to document faults discovered on an aircraft and the corresponding corrective actions. Part I is for fault information, and Part II is for documenting the fix.
Question 19: Which of the following is a key objective of the Preventive Maintenance Daily (PMD) inspection?
- To verify the airworthiness of the aircraft and identify faults before the first flight of the day. (Correct answer)
- To perform major structural repairs and modifications to the airframe.
- To serve as the only required inspection for a 24-hour period.
- To replace all life-limited components that are near their expiration date.
Correct answer: To verify the airworthiness of the aircraft and identify faults before the first flight of the day.
The PMD is a systematic inspection performed by maintenance personnel to ensure the aircraft is mission-capable and airworthy. Its primary goal is to detect and correct any faults before the day's flight operations begin, establishing a baseline of readiness.
Question 20: A maintenance team at an Aviation Intermediate Maintenance (AVIM) facility receives an unserviceable hydraulic pump from a forward-deployed unit. Which action falls within the primary capabilities of AVIM?
- Sending the pump to the original equipment manufacturer (OEM) for a complete rebuild.
- Testing, disassembling, repairing, and reassembling the pump with authorized components. (Correct answer)
- Performing a full remanufacture of the pump to factory-new specifications.
- Condemning the pump and ordering a new one from the supply system.
Correct answer: Testing, disassembling, repairing, and reassembling the pump with authorized components.
AVIM, now part of Sustainment Maintenance, is responsible for 'off-aircraft' repair of components and modules. Their role is to test, repair, and return serviceable components to the supply system or the unit. Full remanufacturing and overhaul to factory standards are Depot-level functions.
Question 21: The Army's maintenance philosophy has shifted from a three-level system (AVUM, AVIM, Depot) to a two-level system. How are the legacy AVUM and AVIM functions categorized under the current two-level maintenance concept?
- Both AVUM and AVIM have been consolidated into Sustainment Maintenance.
- AVUM is now Field Maintenance and AVIM is part of Sustainment Maintenance. (Correct answer)
- AVUM is now National Maintenance and AVIM is Theater Maintenance.
- AVUM is now Operator Maintenance and AVIM is Field Maintenance.
Correct answer: AVUM is now Field Maintenance and AVIM is part of Sustainment Maintenance.
The current Army maintenance system consists of two levels: Field Maintenance and Sustainment Maintenance. Field Maintenance is 'on-system' maintenance performed by the owning unit (formerly AVUM). Sustainment Maintenance is 'off-system' maintenance which includes the more complex repairs and component overhauls previously performed at AVIM and Depot levels.
Question 22: Before operating aviation GSE, a maintainer must ensure which of the following is completed?
- Submission of a DA Form 2404 to higher headquarters
- A 10-hour break-in period at full load
- Operator-level preventive maintenance checks and services (PMCS) (Correct answer)
- Approval from the unit safety officer
Correct answer: Operator-level preventive maintenance checks and services (PMCS)
Operator PMCS must be performed before, during, and after equipment operation per applicable TM requirements.
Question 23: Which of the following best describes the primary purpose of a DA Form 2062 (Hand Receipt) in an Army Aviation supply context?
- To record the maintenance history of a specific aircraft.
- To document the turn-in of an unserviceable but repairable component.
- To request fuel and petroleum products for an aircraft.
- To transfer direct responsibility and accountability for equipment or supplies from one individual to another. (Correct answer)
Correct answer: To transfer direct responsibility and accountability for equipment or supplies from one individual to another.
A DA Form 2062, Hand Receipt, is the official document used to record the transfer of property accountability from a supply custodian (like a supply sergeant or PBO) to a user (like a squad leader or maintenance team chief). It establishes direct responsibility for the listed items.
Question 24: What is the primary function of the hydraulic system in an aircraft?
- To operate flight control surfaces and landing gear. (Correct answer)
- To provide electrical power.
- To fuel the engines.
- To provide cabin pressurization.
Correct answer: To operate flight control surfaces and landing gear.
The hydraulic system in an aircraft is critical for operating heavy-duty components that require significant force. Its primary function is to use pressurized fluid to power essential systems such as flight control surfaces (e.g., ailerons, rudder, elevators) for maneuvering and the landing gear for takeoff and landing. This ensures precise, powerful, and reliable operation of these vital parts.
Question 25: In Army Aviation, preventive maintenance checks are broadly categorized based on who performs them and their level of detail. What are the two primary categories of these checks?
- Component and Airframe Checks
- Aircrew and Maintenance Personnel Checks (Correct answer)
- Pre-mission and Post-mission
- Scheduled and Unscheduled
Correct answer: Aircrew and Maintenance Personnel Checks
Army Aviation maintenance doctrine divides Preventive Maintenance Checks (PMCs) into two main groups: those performed by the aircrew (pre-flight, thru-flight, post-flight) and more in-depth, technical checks performed by qualified maintenance personnel (e.g., Preventive Maintenance Daily and Phased Maintenance Inspections).
Question 26: Which type of GSE is used to move an Army helicopter on the ground without using the aircraft's own power?
- Aircraft tug or towbar assembly (Correct answer)
- Hydraulic test stand
- Aircraft jacking set
- Crash and recovery crane
Correct answer: Aircraft tug or towbar assembly
Aircraft tugs with appropriate towbar assemblies are used to reposition helicopters on the ground without starting the aircraft.
Question 27: According to AR 95-1, an aircraft must be reweighed under several conditions to ensure flight safety and performance calculations are accurate. Which of the following is NOT a mandatory condition for reweighing an Army aircraft?
- When any modifications have been made for which the weight cannot be accurately computed.
- When the weight and center-of-gravity data records are suspected to be in error.
- Following the completion of major airframe repairs.
- After the aircraft has accumulated 1000 flight hours since its last weighing. (Correct answer)
Correct answer: After the aircraft has accumulated 1000 flight hours since its last weighing.
AR 95-1 specifies that an aircraft must be reweighed after major repairs, when modifications significantly alter its basic weight (1% or greater), or when records are suspect. There is no specific requirement to reweigh an aircraft based solely on the accumulation of a set number of flight hours like 1000.
Question 28: What is the primary purpose of a Preventive Maintenance Daily (PMD) inspection?
- To conduct visual examinations and operational checks to ensure the aircraft is safe for the day's mission. (Correct answer)
- To perform in-depth diagnostics on all aircraft systems.
- To check for and service fluid levels only.
- To ensure all scheduled component replacements are completed.
Correct answer: To conduct visual examinations and operational checks to ensure the aircraft is safe for the day's mission.
The Preventive Maintenance Daily (PMD) inspection is accomplished before the first flight of the next mission day. It consists of visual examinations and operational checks to determine if the aircraft can safely perform its assigned mission. It is a routine check, not an in-depth inspection or a time for major component replacement.
Question 29: An Aviation Unit Maintenance (AVUM) team is tasked with returning an aircraft to service. Which of the following tasks is most representative of the duties performed at the AVUM level?
- Performing a complete airframe structural alignment using specialized jigs.
- Replacing a main rotor blade after it was damaged by debris. (Correct answer)
- Rebuilding an engine control unit (ECU) by replacing internal micro-circuitry.
- Overhauling a transmission that has reached its time between overhaul (TBO) limit.
Correct answer: Replacing a main rotor blade after it was damaged by debris.
AVUM, or Field Maintenance, is characterized by 'on-aircraft' repairs focused on returning the aircraft to operational status quickly. This includes replacing modular components like rotor blades, engines, and other line-replaceable units (LRUs). Overhaul, major structural repair, and detailed component rebuilding are performed at the Depot level.
Question 30: A critical component is removed from an aircraft due to a malfunction. The maintenance officer needs to ensure the life cycle and maintenance history of this specific, high-value component are tracked from its removal through repair and eventual reinstallation or condemnation. Which form is essential for this purpose?
- DA Form 2408-14-1, Uncorrected Fault Record (Aircraft)
- DA Form 2408-12, Army Aviator's Flight Record
- DA Form 2408-16, Aircraft Component Historical Record (Correct answer)
- DA Form 2408-13-1, Aircraft Inspection and Maintenance Record
Correct answer: DA Form 2408-16, Aircraft Component Historical Record
DA Form 2408-16, Aircraft Component Historical Record, is a detailed log that stays with a specific, serially-tracked component throughout its service life. It documents all installations, removals, and significant maintenance actions, providing a complete history for that part.
Question 31: A key function of Aviation Intermediate Maintenance (AVIM) is providing mobile support to AVUM units. What is a primary example of this type of support?
- Performing a complete overhaul of an engine at the unit's location.
- Conducting pre-flight inspections for the AVUM.
- Deploying a Downed Aircraft Recovery Team (DART) with specialized equipment. (Correct answer)
- Delivering routine spare parts like nuts and bolts.
Correct answer: Deploying a Downed Aircraft Recovery Team (DART) with specialized equipment.
AVIM units are equipped to provide mobile maintenance support, including technical assistance and aircraft recovery. A DART mission requires specialized skills and equipment that typically reside at the intermediate (now Sustainment) level to support the forward-deployed AVUM units. Routine supply and pre-flights are AVUM tasks, while a complete overhaul is a Depot function.
Question 32: Which statement best describes the primary goal of Field-level maintenance (formerly AVUM) within the Army Aviation Maintenance Program?
- To perform complete overhauls and rebuilds of major aircraft components.
- To ensure a steady flow of serviceable parts back into the Army supply system.
- To provide the maximum number of mission-capable aircraft to the tactical commander. (Correct answer)
- To develop and publish new repair procedures for complex aircraft systems.
Correct answer: To provide the maximum number of mission-capable aircraft to the tactical commander.
The primary purpose of Field-level (AVUM) maintenance is to support the operational commander by maintaining a high level of aircraft readiness. This is achieved through high-frequency, on-aircraft tasks that focus on quick turnaround and returning aircraft to a mission-capable status. Repairing components for the supply system is a Sustainment-level task.
Question 33: Which of the following is a primary responsibility of a Technical Inspector (TI) within an Army Aviation maintenance program?
- Performing in-progress and final inspections on critical maintenance tasks to ensure quality and adherence to standards. (Correct answer)
- Supervising the daily activities and administrative needs of all maintenance personnel.
- Managing the unit's budget for repair parts and POL (Petroleum, Oils, and Lubricants).
- Developing the weekly flight schedule and assigning aircrews.
Correct answer: Performing in-progress and final inspections on critical maintenance tasks to ensure quality and adherence to standards.
A Technical Inspector's core function is quality control. TIs are responsible for inspecting maintenance work, especially on critical flight safety systems, to verify it was performed correctly according to technical manuals and safety standards before the aircraft is returned to service.
Question 34: A Quality Assurance (QA) program in Army aviation is primarily designed to:
- Conduct flight crew standardization evaluations
- Track individual mechanic productivity metrics
- Ensure maintenance is performed to established standards and identify systemic deficiencies (Correct answer)
- Manage aviation spare parts requisitioning
Correct answer: Ensure maintenance is performed to established standards and identify systemic deficiencies
The QA program monitors maintenance quality, ensures compliance with standards, and identifies trends requiring corrective action.
Question 35: Which of the following scenarios would necessitate sending an entire AH-64 Apache helicopter to a Depot-level maintenance facility?
- The main transmission chip detector indicates the presence of metal flakes.
- The aircraft requires a scheduled 500-hour phase inspection.
- A flight control computer has failed and needs to be replaced.
- The aircraft has sustained significant structural damage in a hard landing, requiring airframe realignment. (Correct answer)
Correct answer: The aircraft has sustained significant structural damage in a hard landing, requiring airframe realignment.
Depot-level maintenance handles the most complex and extensive tasks, including major structural repairs, overhauls, and complete rebuilds of aircraft and components that are beyond the capabilities of Field (AVUM) and intermediate (AVIM) maintenance. Scheduled inspections and component replacements are typically handled at the AVUM or AVIM levels.
Question 36: A maintenance unit is preparing to transfer a UH-60M to another unit permanently. According to DA PAM 738-751, what is a critical policy requirement during this process?
- The receiving unit must perform a complete Phase Maintenance Inspection (PMI) within 7 days of arrival.
- The transferring unit must repaint the aircraft with the receiving unit's markings before shipment.
- All historical records in the logbook must be closed out and sent to a centralized Army records depot.
- A joint transfer inspection must be completed by both units, with all discrepancies annotated on a DA Form 2408-13-1. (Correct answer)
Correct answer: A joint transfer inspection must be completed by both units, with all discrepancies annotated on a DA Form 2408-13-1.
Aircraft transfers require a meticulous inspection and documentation process to ensure the receiving unit has a full and accurate accounting of the aircraft's material condition. A joint inspection is conducted, and the results, including all identified faults, are documented on DA Form 2408-13-1 (Aircraft Inspection and Maintenance Record), which becomes a part of the aircraft's logbook.
Question 37: Which environmental condition most accelerates corrosion on Army aircraft?
- Extreme heat and prolonged direct sunlight
- High humidity and salt-laden air (Correct answer)
- High altitude and low atmospheric pressure
- Low humidity and cold temperatures
Correct answer: High humidity and salt-laden air
High humidity combined with salt-laden air, such as in coastal or marine environments, most rapidly accelerates electrochemical corrosion on aircraft metal surfaces.
Question 38: What is stress corrosion cracking (SCC) and what conditions promote its development?
- Fatigue cracking caused by repeated mechanical loading and vibration cycles alone
- Rapid surface oxidation caused by high-velocity airflow over exposed metal components
- Corrosion that forms exclusively around welded joints under elevated thermal stress
- Cracking that occurs when sustained tensile stress and a corrosive environment act simultaneously on a susceptible metal (Correct answer)
Correct answer: Cracking that occurs when sustained tensile stress and a corrosive environment act simultaneously on a susceptible metal
Stress corrosion cracking occurs when a susceptible metal is subjected to both sustained tensile stress and a corrosive environment simultaneously, leading to crack initiation and propagation that can cause sudden fracture.
Question 39: What is the role of standard operating procedures (SOPs) in maintenance?
- To ignore regulatory requirements.
- To create confusion.
- To provide consistent and safe maintenance guidelines (Correct answer)
- To reduce maintenance frequency.
Correct answer: To provide consistent and safe maintenance guidelines
Standard Operating Procedures (SOPs) are essential in maintenance to provide consistent and safe maintenance guidelines. They are detailed, written instructions that describe how to perform routine tasks safely and effectively. SOPs ensure uniformity across all technicians, reduce the risk of errors, and guarantee compliance with safety regulations and manufacturer specifications, thereby enhancing overall quality and safety.
Question 40: When an Army aircraft exceeds its component time-change interval (TCI) in flight hours, the required action is:
- Increase inspection frequency for the next 10 flight hours
- Ground the aircraft and replace the affected component before further flight (Correct answer)
- Request a waiver from the Aviation Brigade S4
- Document the overflight and continue operations until next inspection
Correct answer: Ground the aircraft and replace the affected component before further flight
Components must be replaced at or before their TCI; exceeding the interval grounds the aircraft until the affected component is replaced.
Question 41: In the modern Army Aviation maintenance environment, what is the official, primary source for approved maintenance procedures, technical manuals, and checklists?
- The Army Publishing Directorate (APD) website.
- Interactive Electronic Technical Manuals (IETMs) accessed via an approved electronic device. (Correct answer)
- Paper-based technical manuals stored in the company's technical library.
- Commercial maintenance software purchased by the unit.
Correct answer: Interactive Electronic Technical Manuals (IETMs) accessed via an approved electronic device.
The Army has transitioned from paper manuals to Interactive Electronic Technical Manuals (IETMs) as the primary, authoritative source for maintenance information. IETMs provide up-to-date, interactive procedures and are the standard for field and sustainment-level maintenance.
Question 42: A maintenance supervisor needs to check the status of a critical part ordered for a non-mission-capable aircraft. Which modern logistics information system would they primarily use to track the requisition from order placement to delivery?
- The Property Book Unit Supply Enhanced (PBUSE)
- The Unit Level Logistics System - Aviation (Enhanced) (ULLS-A(E))
- The Army Maintenance Management System - Aviation (TAMMS-A)
- Global Combat Support System - Army (GCSS-Army) (Correct answer)
Correct answer: Global Combat Support System - Army (GCSS-Army)
GCSS-Army is the Army's current, web-based system of record for logistics, integrating supply, maintenance, and property accountability. It replaced legacy systems like ULLS-A(E) and PBUSE. A supervisor would use GCSS-Army to view the status of a part request associated with a maintenance work order.
Question 43: An aviation support battalion (ASB) is responsible for providing supply support to several forward aviation units. The ASB maintains a large inventory of repair parts based on the anticipated demand of the units it supports. What is this level of supply stock, which is above the supported units' own PLL, called?
- Bench Stock
- Shop Stock
- Authorized Stockage List (ASL) (Correct answer)
- Operational Load
Correct answer: Authorized Stockage List (ASL)
An Authorized Stockage List (ASL) is a list of items authorized to be stocked by a support activity (like an ASB or SSA) to meet the anticipated demands of the organizations it supports. It is a higher level of supply than a unit's Prescribed Load List (PLL) and is based on demand history and mission requirements.
Question 44: Which publication series provides the overarching maintenance and inspection requirements for specific Army aircraft types?
- AR (Army Regulation) 750-series only
- TM (Technical Manual) series specific to each aircraft, e.g., TM 1-1520-series (Correct answer)
- DA Pamphlet 738-series
- FM (Field Manual) series
Correct answer: TM (Technical Manual) series specific to each aircraft, e.g., TM 1-1520-series
TM 1-1520-series technical manuals provide aircraft-specific maintenance, inspection, and airworthiness requirements for each Army aircraft type.
Question 45: Which statement accurately describes the relationship between a Post-Flight Inspection and the next day's maintenance activities?
- The Post-Flight Inspection is performed by maintenance personnel to prepare for immediate turnaround.
- The Post-Flight Inspection is only required if the aircraft exceeded its operational limits during the flight.
- A thorough Post-Flight Inspection by the aircrew eliminates the need for the next day's PMD.
- Faults identified during the Post-Flight Inspection become a starting point for the maintenance team's corrective actions. (Correct answer)
Correct answer: Faults identified during the Post-Flight Inspection become a starting point for the maintenance team's corrective actions.
The Post-Flight Inspection, conducted by the aircrew after the last flight, is crucial for identifying discrepancies that occurred during the mission. These documented faults are then used by the maintenance team to schedule and perform necessary repairs, often before or during the next day's PMD.
Question 46: Who is responsible for workplace safety?
- Only managers.
- Only safety officers.
- Everyone (Correct answer)
- Only workers.
Correct answer: Everyone
Workplace safety is a shared responsibility, meaning everyone from top management to individual employees plays a crucial role. Management provides resources and sets policies, while employees are responsible for following procedures, reporting hazards, and working safely, creating a collective culture of safety.
Question 47: An aviation unit receives a Safety of Flight (SOF) message for its fleet of UH-60M aircraft. The message mandates an immediate, one-time inspection of a specific tail rotor component before the next flight. What is the correct immediate policy action for the unit's leadership?
- Brief aircrews to perform a more detailed preflight of the tail rotor area.
- Acknowledge the message and schedule the inspection during the next 40-hour PMI.
- Order the parts listed in the SOF message as a precautionary measure before starting inspections.
- Ground the entire affected fleet until the inspection and any required corrective actions are completed and documented. (Correct answer)
Correct answer: Ground the entire affected fleet until the inspection and any required corrective actions are completed and documented.
A Safety of Flight (SOF) message identifies a hazardous condition that could result in death, injury, or destruction of the aircraft. Compliance is mandatory and immediate. The standard and required procedure is to ground all affected aircraft until the prescribed inspections and necessary repairs are completed and properly documented.
Question 48: What is the purpose of a bore scope in Army aviation GSE?
- To visually inspect internal engine components without disassembly (Correct answer)
- To measure rotor blade chord width
- To calibrate altimeter systems on the flight line
- To pressurize aircraft fuel cells for leak testing
Correct answer: To visually inspect internal engine components without disassembly
A bore scope is an optical inspection tool used to examine internal engine components such as turbine blades without requiring engine disassembly.
Question 49: An aircrew completes a mission and needs to record flight duration, duty symbols, landings, and fuel servicing data. Which TAMMS-A form is the correct document for recording this specific operational and servicing information?
- DA Form 759, Individual Flight Record and Flight Certificate - Army
- DA Form 2408-13-1, Aircraft Inspection and Maintenance Record
- DA Form 2408-18, Equipment Inspection List
- DA Form 2408-12, Army Aviator's Flight Record (Correct answer)
Correct answer: DA Form 2408-12, Army Aviator's Flight Record
DA Form 2408-12, Army Aviator's Flight Record, is used to document all flight-related data for the aircraft and crew, including pilot/crew information, flight times, landings, and servicing data like fuel and oil added.
Question 50: Which Army regulation governs the maintenance and management of aviation ground support equipment?
- AR 385-10
- AR 95-1
- AR 710-2
- AR 750-1 (Correct answer)
Correct answer: AR 750-1
AR 750-1 (Army Materiel Maintenance Policy) governs the maintenance management of Army equipment including GSE.
Question 51: Which form is used to record faults found during pre-flight, in-flight, and post-flight inspections, as well as to document corrective actions?
- DA Form 2408-13-1 (Correct answer)
- DA Form 2408-18
- DA Form 2408-12
- DA Form 2408-14-1
Correct answer: DA Form 2408-13-1
DA Form 2408-13-1, Aircraft Inspection and Maintenance Record, is the primary form used to document operational remarks, faults found during inspections, and the subsequent maintenance actions performed to correct those faults.
Question 52: A technician replaces a damaged, but repairable, main rotor blade on a UH-60M. The unserviceable blade is a high-cost, recoverable item. From a supply management perspective, what is the most critical action the unit must take with the unserviceable rotor blade to receive credit and ensure the item re-enters the Army's repair cycle?
- Use the blade for local maintenance training exercises.
- Properly package and process the blade for turn-in to the supporting supply activity (SSA). (Correct answer)
- Document the removal on the aircraft's logbook and discard the blade.
- Store the blade indefinitely in the unit's HAZMAT locker.
Correct answer: Properly package and process the blade for turn-in to the supporting supply activity (SSA).
Recoverable items (recoverables) must be turned into the supply system, typically through the supporting SSA. This action is critical for the Army's overall supply chain management, as it allows the part to be repaired and reissued, saving significant costs. The unit also receives credit for the turn-in against the cost of the replacement part.
Question 53: A crew chief has just completed and signed off the Preventive Maintenance Daily (PMD) on a UH-60M. Before the first flight of the day, what is the pilot's specific responsibility regarding the aircraft's condition?
- To assume the PMD is sufficient and begin the mission immediately.
- To review and countersign the PMD log entry in the aircraft's records.
- To perform a separate and distinct pre-flight inspection per the operator's manual. (Correct answer)
- To supervise the crew chief during the next PMD.
Correct answer: To perform a separate and distinct pre-flight inspection per the operator's manual.
Even after maintenance personnel complete a PMD, the pilot-in-command is always required to conduct a thorough pre-flight inspection as outlined in the aircraft's technical manual. This is a final, independent verification by the operator to ensure the aircraft is safe for the intended flight.
Army Aviation Maintenance (AAC) Certification Exam
The Army Aviation Maintenance (AAC) Certification Exam covers TAMMS-A procedures, maintenance forms and records, aviation maintenance levels, preventive maintenance checks, aviation supply management, scheduled maintenance inspections, ground support equipment, and aircraft airworthiness standards.
Exam Rules
- You can skip questions and return to them later
- Flag questions for review before submitting
- No feedback shown until you submit the entire exam
- Unanswered questions count as wrong — answer everything
- 10 pretest questions are mixed in and don't affect your score
- Timer auto-submits when time runs out
- Your progress is auto-saved every 30 seconds