AAC Aviation Maintenance Levels — Questions and Answers
Question 1: Under the Army's two-level maintenance system, which two levels make up aviation maintenance?
- Operator and intermediate
- Unit and depot
- Organizational and general support
- Field and sustainment (Correct answer)
Correct answer: Field and sustainment
Army aviation maintenance is split into field maintenance (formerly AVUM and AVIM) and sustainment maintenance (formerly depot).
Question 2: Which former maintenance categories are combined to form aviation field maintenance?
- Crew and depot
- Depot and general support
- AVUM and AVIM (Correct answer)
- AVIM and depot
Correct answer: AVUM and AVIM
Field maintenance merges the former aviation unit (AVUM) and aviation intermediate (AVIM) maintenance tasks.
Question 3: What is the main goal of field maintenance?
- Return repaired items to the national supply system
- Make modifications to the aircraft design
- Rebuild airframes to zero-time standard
- Repair and return equipment to the user (Correct answer)
Correct answer: Repair and return equipment to the user
Field maintenance is focused on the user and repairs equipment so it can go back to the operating unit.
Question 4: What is the main goal of sustainment maintenance?
- Daily preflight inspections
- Replacing line-replaceable units on the flight line
- Repair and return items to the supply system (Correct answer)
- Servicing aircraft with fuel and oil
Correct answer: Repair and return items to the supply system
Sustainment maintenance is focused on the supply system and returns repaired components to Army inventory.
Question 5: In an aviation battalion, which company mainly does AVUM-type field maintenance?
- Aviation Support Company (ASC)
- Forward Support Company (FSC)
- Headquarters Support Company (HSC)
- Aviation Maintenance Company (AMC) (Correct answer)
Correct answer: Aviation Maintenance Company (AMC)
The AMC in each aviation battalion does unit-level field maintenance such as phase inspections and scheduled maintenance.
Question 6: Which unit in the Aviation Support Battalion gives AVIM-type field maintenance support to a Combat Aviation Brigade?
- Aviation Maintenance Company (AMC)
- Distribution Company
- Network Support Company
- Aviation Support Company (ASC) (Correct answer)
Correct answer: Aviation Support Company (ASC)
The ASC in the ASB does higher-level field maintenance, including component repair and backup support to the AMCs.
Question 7: Which Army depot is the main sustainment-level facility for rotary-wing aircraft and components?
- Red River Army Depot
- Anniston Army Depot
- Corpus Christi Army Depot (Correct answer)
- Tobyhanna Army Depot
Correct answer: Corpus Christi Army Depot
Corpus Christi Army Depot (CCAD) in Texas is the Army's main helicopter overhaul and repair depot.
Question 8: On an aviation Maintenance Allocation Chart (MAC), which code stands for operator/crew maintenance?
- O
- D
- C (Correct answer)
- F
Correct answer: C
Code C on the MAC marks tasks done by the operator or crew.
Question 9: On an aviation MAC, which code stands for depot maintenance?
- D (Correct answer)
- F
- H
- O
Correct answer: D
Code D marks depot-level tasks, which are part of sustainment maintenance.
Question 10: Which MAC codes fall under field maintenance in the two-level system?
- O, H, and D
- F, H, and D
- C, O, and F (Correct answer)
- H and D
Correct answer: C, O, and F
Crew (C), unit/AVUM (O), and intermediate/AVIM (F) tasks are all field maintenance.
Question 11: Which MAC codes fall under sustainment maintenance?
- C and O
- O and F
- F and H
- H and D (Correct answer)
Correct answer: H and D
General support (H) and depot (D) tasks make up sustainment maintenance.
Question 12: In which publication would a mechanic look for the MAC for a specific aircraft?
- DA Pam 738-751 only
- AR 95-1
- The aircraft's operator's manual (-10)
- The aircraft's maintenance technical manual (-23 series) (Correct answer)
Correct answer: The aircraft's maintenance technical manual (-23 series)
The MAC is published in the aircraft's maintenance technical manuals and shows which level is allowed to do each task.
Question 13: A unit finds a task that the MAC assigns to a higher level. What is the normal action?
- Cancel the aircraft's airworthiness release
- Do the task anyway if tools are on hand
- Evacuate the item or request support from the authorized level (Correct answer)
- Defer the task forever with no paperwork
Correct answer: Evacuate the item or request support from the authorized level
Units do only the tasks the MAC authorizes for them and pass higher-level work to the authorized maintenance level.
Question 14: Which regulation sets Army maintenance policy, including the two-level maintenance system?
- AR 385-10
- AR 600-20
- AR 95-1
- AR 750-1 (Correct answer)
Correct answer: AR 750-1
AR 750-1, Army Materiel Maintenance Policy, sets out the field and sustainment maintenance structure.
Question 15: Which task is typically done at the field level by an aviation maintenance company?
- Phase maintenance inspection (Correct answer)
- Full airframe overhaul (recapitalization)
- Manufacturing new rotor blades
- Rebuilding a main transmission to zero time
Correct answer: Phase maintenance inspection
Phase inspections are scheduled field maintenance done by the AMC, sometimes with help from the ASC.
Question 16: An engine needs full teardown and overhaul. At which level is that normally done?
- Flight line servicing
- Sustainment (depot) (Correct answer)
- Unit field maintenance
- Operator/crew
Correct answer: Sustainment (depot)
Complete component overhaul is a sustainment task done at depot or by approved sustainment sources.
Question 17: Which work is the Aviation Support Company most likely to do instead of the AMC?
- Daily inspections
- Filling out the aircrew preflight
- Refueling aircraft
- Back-shop component repair such as NDI and composite repair (Correct answer)
Correct answer: Back-shop component repair such as NDI and composite repair
The ASC has specialized back shops for higher-level field tasks like nondestructive inspection and component repair.
Question 18: Army National Guard Theater Aviation Sustainment Maintenance Groups (TASMGs) mainly provide which kind of support?
- Operator-level servicing only
- Flight training
- Sustainment-level and high-end field maintenance (Correct answer)
- Air traffic control
Correct answer: Sustainment-level and high-end field maintenance
TASMGs do sustainment and higher-level field maintenance that adds to depot capacity.
Question 19: Which task is a crew-level (C) maintenance task?
- Major structural repair
- Repairing the transmission case
- Replacing the main rotor mast
- Preflight inspection and servicing (Correct answer)
Correct answer: Preflight inspection and servicing
Crew-level tasks include preflight, daily inspection, and basic servicing.
Question 20: What is the main benefit of the two-level maintenance system compared with the older multi-level system?
- Fewer handoffs and quicker repair cycle (Correct answer)
- More depots in combat zones
- Removal of all unit maintenance
- Every repair goes to the manufacturer
Correct answer: Fewer handoffs and quicker repair cycle
Two-level maintenance cuts down on hand-offs between levels, which speeds up repairs and lowers the logistics footprint.
Question 21: In the field, which unit gives backup maintenance support when an AMC's workload is more than it can handle?
- The Aviation Support Company (Correct answer)
- The installation's Directorate of Public Works
- The aircraft manufacturer's sales office
- Corpus Christi Army Depot
Correct answer: The Aviation Support Company
The ASC backs up the AMCs by taking on overflow and higher-level field tasks.
AAC Aviation Maintenance Levels
Under the Army's two-level maintenance system, which two levels make up aviation maintenance?
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