AAC Preventive Maintenance Checks — Questions and Answers

Question 1: Which publication does an Army aviator use to complete the preflight inspection in the cockpit and around the aircraft?

The unit SOP for motor pools
The depot maintenance work requirement
The aircraft operator's checklist (-CL) (Correct answer)
The aircraft historical record

Correct answer: The aircraft operator's checklist (-CL)

Preflight inspections are performed using the operator's manual (-10) and its condensed checklist (-CL).

Question 2: During a preflight, a crew chief finds a fluid leak that forms drops but does not fall from the component. How is this leak classified?

Class II (Correct answer)
Class III
Class IV
Class I

Correct answer: Class II

A Class II leak is heavy enough to form drops but not enough to cause drops to fall from the item.

Question 3: What is the primary purpose of a FOD walk on the flight line before operations?

To verify fuel quantity in each aircraft
To find and remove foreign objects that could be ingested by engines or rotors (Correct answer)
To inspect aircrew flight records
To count tie-downs and covers

Correct answer: To find and remove foreign objects that could be ingested by engines or rotors

FOD walks remove debris that could damage engines, rotor blades, and other components.

Question 4: A torque stripe on a fitting is found broken and offset during a daily inspection. What does this most likely indicate?

The fitting is due for a phase inspection
The fitting was recently lubricated
The fitting may have rotated or loosened since it was torqued (Correct answer)
The paint has simply aged and needs touch-up only

Correct answer: The fitting may have rotated or loosened since it was torqued

Torque (witness) stripes are applied so that any movement of a fastener after torquing is visually evident.

Question 5: Which form is used to record faults discovered during preventive maintenance checks on Army aircraft?

DA Form 5988-E only
DA Form 2408-13-1 (Correct answer)
DA Form 2404
DD Form 1348-1A

Correct answer: DA Form 2408-13-1

Aircraft faults and inspections are recorded on DA Form 2408-13-1, the Aircraft Inspection and Maintenance Record.

Question 6: Which publication provides procedures for using and maintaining Army aviation maintenance forms and records (TAMMS-A)?

FM 3-21.8
AR 385-10
DA PAM 738-751 (Correct answer)
AR 600-20

Correct answer: DA PAM 738-751

DA PAM 738-751 is the functional users manual for The Army Maintenance Management System - Aviation.

Question 7: When an aviator finds a deficiency during preflight that makes the aircraft unsafe to fly, what status symbol is entered?

Red diagonal
Black initials
Red horizontal dash
Red X (Correct answer)

Correct answer: Red X

A Red X indicates the aircraft is considered unsafe or unserviceable and must not be flown until corrected.

Question 8: A known deficiency is found that does not make the aircraft unsafe for flight. Which status symbol is used?

Red horizontal dash
Red diagonal (Correct answer)
Circled red X
Red X

Correct answer: Red diagonal

A red diagonal identifies a material defect that is not serious enough to ground the aircraft.

Question 9: What does a circled red X status symbol indicate?

The aircraft is fully mission capable
An inspection is overdue but not grounding
The aircraft has a grounding condition but may be flown under specific limits authorized by a designated individual (Correct answer)
The fault has been corrected and inspected

Correct answer: The aircraft has a grounding condition but may be flown under specific limits authorized by a designated individual

A circled red X allows limited flight under conditions approved by an authorized person despite a Red X condition.

Question 10: Which status symbol indicates an inspection, component replacement, or MWO is due or overdue but the condition is not grounding?

Red X
Circled red X
Red diagonal
Red horizontal dash (Correct answer)

Correct answer: Red horizontal dash

The red horizontal dash marks a due or overdue inspection, test, or MWO that does not ground the aircraft.

Question 11: After a Red X fault is corrected, who must normally verify the work before the status symbol is cleared?

The company first sergeant
A qualified technical inspector (Correct answer)
Any crewmember assigned to the flight
The unit supply sergeant

Correct answer: A qualified technical inspector

Technical inspectors verify maintenance on safety-of-flight items before Red X conditions are cleared.

Question 12: Which inspection is performed on a scheduled flight-hour basis and involves a thorough, in-depth check of the entire aircraft?

Engine run-up check
Preflight inspection
Thruflight inspection
Phased maintenance inspection (Correct answer)

Correct answer: Phased maintenance inspection

Phased maintenance inspections are scheduled by flight hours and cover the aircraft in depth.

Question 13: Who has final authority to accept or refuse an aircraft for flight after reviewing its forms and completing the preflight?

The unit armorer
The production control officer
The pilot in command (Correct answer)
The crew chief

Correct answer: The pilot in command

Per AR 95-1, the pilot in command is responsible for the aircraft's operation and determining its airworthiness for the flight.

Question 14: While checking safety wire during a daily inspection, which condition would require correction?

Safety wire with a neat pigtail bent back
Safety wire pulling in the tightening direction
Safety wire installed so tension tends to loosen the fastener (Correct answer)
Safety wire with correct twists per inch

Correct answer: Safety wire installed so tension tends to loosen the fastener

Safety wire must be installed so it pulls the fastener in the tightening direction.

Question 15: A leak that drips from a component during inspection is classified as which class?

Class I
Class 0
Class II
Class III (Correct answer)

Correct answer: Class III

A Class III leak is heavy enough to form drops that fall from the item being checked.

Question 16: Which leak class describes seepage of fluid not great enough to form drops?

Class I (Correct answer)
Class II
Class III
Class IV

Correct answer: Class I

Class I leakage is indicated by wetness or discoloration without forming drops.

Question 17: Where should an aviator look before flight to see uncorrected faults and inspection status of the aircraft?

The aircraft logbook forms (Correct answer)
The flight school syllabus
The unit training schedule
The battalion property book

Correct answer: The aircraft logbook forms

The aircraft logbook contains current faults, status symbols, and inspection data that the crew must review before flight.

Question 18: After maintenance on a flight control system that cannot be fully verified on the ground, what is typically required before return to normal flight?

A records audit by the S-1
A maintenance test flight by a qualified maintenance test pilot (Correct answer)
A FOD walk only
A wash and corrosion treatment

Correct answer: A maintenance test flight by a qualified maintenance test pilot

Certain maintenance requires a maintenance test flight per the aircraft's MTF manual before release.

Question 19: Which inspection is required after an event such as a hard landing, lightning strike, or engine overtemperature?

Daily inspection
Special inspection (Correct answer)
Thruflight inspection
Preflight inspection

Correct answer: Special inspection

Special inspections are directed after unusual events or conditions as specified in the aircraft maintenance manual.

Question 20: During PMCS a chip detector warning is reported from the previous flight. What is the appropriate action?

Note it for the next phase inspection only
Reset the caution light and continue normal operations
Add oil and dispatch the aircraft
Inspect the chip detector and troubleshoot per the maintenance manual before further flight (Correct answer)

Correct answer: Inspect the chip detector and troubleshoot per the maintenance manual before further flight

A chip indication may signal internal component wear and must be investigated per the TM before flight.

Question 21: Why are aircraft covers, plugs, and tie-downs checked and removed during preflight?

Leaving them installed can cause damage or an accident on startup or takeoff (Correct answer)
They affect radio performance
They are only used for parade inspections
They must be turned in to supply daily

Correct answer: Leaving them installed can cause damage or an accident on startup or takeoff

Installed covers, intake plugs, or tie-downs can be ingested or restrain the aircraft, causing serious damage.

AAC Preventive Maintenance Checks

Which publication does an Army aviator use to complete the preflight inspection in the cockpit and around the aircraft?

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