Preventive Maintenance Checks Flashcards
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Read the first 20 Preventive Maintenance Checks flashcards as text
Which publication does an Army aviator use to complete the preflight inspection in the cockpit and around the aircraft?
Answer: The aircraft operator's checklist (-CL)
Preflight inspections are performed using the operator's manual (-10) and its condensed checklist (-CL).
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?
Answer: Class II
A Class II leak is heavy enough to form drops but not enough to cause drops to fall from the item.
What is the primary purpose of a FOD walk on the flight line before operations?
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.
A torque stripe on a fitting is found broken and offset during a daily inspection. What does this most likely indicate?
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.
Which form is used to record faults discovered during preventive maintenance checks on Army aircraft?
Answer: DA Form 2408-13-1
Aircraft faults and inspections are recorded on DA Form 2408-13-1, the Aircraft Inspection and Maintenance Record.
Which publication provides procedures for using and maintaining Army aviation maintenance forms and records (TAMMS-A)?
Answer: DA PAM 738-751
DA PAM 738-751 is the functional users manual for The Army Maintenance Management System - Aviation.
When an aviator finds a deficiency during preflight that makes the aircraft unsafe to fly, what status symbol is entered?
Answer: Red X
A Red X indicates the aircraft is considered unsafe or unserviceable and must not be flown until corrected.
A known deficiency is found that does not make the aircraft unsafe for flight. Which status symbol is used?
Answer: Red diagonal
A red diagonal identifies a material defect that is not serious enough to ground the aircraft.
What does a circled red X status symbol indicate?
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.
Which status symbol indicates an inspection, component replacement, or MWO is due or overdue but the condition is not grounding?
Answer: Red horizontal dash
The red horizontal dash marks a due or overdue inspection, test, or MWO that does not ground the aircraft.
After a Red X fault is corrected, who must normally verify the work before the status symbol is cleared?
Answer: A qualified technical inspector
Technical inspectors verify maintenance on safety-of-flight items before Red X conditions are cleared.
Which inspection is performed on a scheduled flight-hour basis and involves a thorough, in-depth check of the entire aircraft?
Answer: Phased maintenance inspection
Phased maintenance inspections are scheduled by flight hours and cover the aircraft in depth.
Who has final authority to accept or refuse an aircraft for flight after reviewing its forms and completing the preflight?
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.
While checking safety wire during a daily inspection, which condition would require correction?
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.
A leak that drips from a component during inspection is classified as which class?
Answer: Class III
A Class III leak is heavy enough to form drops that fall from the item being checked.
Which leak class describes seepage of fluid not great enough to form drops?
Answer: Class I
Class I leakage is indicated by wetness or discoloration without forming drops.
Where should an aviator look before flight to see uncorrected faults and inspection status of the aircraft?
Answer: The aircraft logbook forms
The aircraft logbook contains current faults, status symbols, and inspection data that the crew must review before flight.
After maintenance on a flight control system that cannot be fully verified on the ground, what is typically required before return to normal flight?
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.
Which inspection is required after an event such as a hard landing, lightning strike, or engine overtemperature?
Answer: Special inspection
Special inspections are directed after unusual events or conditions as specified in the aircraft maintenance manual.
During PMCS a chip detector warning is reported from the previous flight. What is the appropriate action?
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.
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