Maintenance Procedures & Standards Flashcards
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Read the first 20 Maintenance Procedures & Standards flashcards as text
A crew chief finds a fault that makes the aircraft unsafe to fly. Which status symbol goes on the aircraft forms?
Answer: Red X
Under TAMMS-A (DA PAM 738-751), a Red X means the aircraft is unsafe and must not be flown until the fault is fixed.
What does a red diagonal (/) status symbol on DA Form 2408-13-1 mean?
Answer: A deficiency exists, but it does not make the aircraft unsafe
A red diagonal marks a known deficiency that does not make the aircraft unsafe to fly.
What does a circled red X allow?
Answer: The aircraft may fly under specific limits approved by an authorized commander or designated representative
A circled red X lets an aircraft with a Red X condition fly under stated limits, but only with authorization from the commander or designated representative.
Which form records the aircraft's current status, faults, and the maintenance done to correct them?
Answer: DA Form 2408-13-1
DA Form 2408-13-1 (Aircraft Inspection and Maintenance Record) records status symbols, faults, and the corrective actions taken.
A fault cannot be fixed right away and maintenance is deferred. Where is it carried forward?
Answer: DA Form 2408-14-1, Uncorrected Fault Record
Deferred faults are copied to DA Form 2408-14-1 so they stay visible until corrected.
Which publication sets the Army's overall maintenance policy, including the two-level maintenance system?
Answer: AR 750-1
AR 750-1 (Army Materiel Maintenance Policy) sets the field and sustainment maintenance structure.
Under the Army's two-level maintenance system, what are the two levels?
Answer: Field and sustainment
AR 750-1 groups maintenance into field (on-system) and sustainment (off-system/depot) levels.
A technician finds a tool missing from the kit after working in an engine compartment. What should happen first?
Answer: Stop work, start a search, and do not release the aircraft until the tool is found or the loss is resolved per local tool control SOP
A missing tool is a FOD hazard, so the aircraft is held (normally with a Red X) until the tool is found or the loss is resolved per tool control procedures.
When safety wiring a pair of bolts with the double-twist method, which way should the wire pull?
Answer: In the tightening direction
Safety wire is installed so that any tendency of the fastener to loosen puts more tension on the wire.
How should a used cotter pin be handled during reassembly?
Answer: Throw it away and install a new one
Cotter pins are one-time-use items and are replaced with new ones on reassembly.
A self-locking nut can be run all the way down the bolt with fingers alone. What should you do?
Answer: Replace it, because it has lost its locking feature
If a self-locking nut no longer meets its minimum prevailing torque, it has lost its locking ability and must be replaced.
What is the maximum number of threads that may be exposed outside a turnbuckle barrel at each end?
Answer: Three
Standard aviation practice allows no more than three threads exposed at each end, so enough thread is engaged.
Which TM suffix marks the field-level maintenance manual for an aircraft?
Answer: -23
The -23 manuals cover field maintenance; -10 is the operator's manual, -CL the checklist, and -MTF the test flight manual.
Which TM gives general aviation maintenance procedures such as torque, safety wiring, and hardware practices?
Answer: TM 1-1500-204-23
The TM 1-1500-204-23 series covers general maintenance practices for Army aircraft.
A torque wrench is used with an extension that adds length past the drive. Which formula gives the wrench setting?
Answer: TW = TA x L / (L + E)
An extension increases leverage, so the setting is reduced: TW = TA x L / (L + E).
Which DD Form tag is used for serviceable materiel?
Answer: DD Form 1574
DD Form 1574 is the Serviceable Tag-Materiel; the 1577 series is for unserviceable items.
A removed component is unserviceable but repairable. Which tag goes on it?
Answer: DD Form 1577-2 (green)
DD Form 1577-2, Unserviceable (Reparable) Tag, is the green tag.
How do you correct a wrong entry on a TAMMS-A maintenance form?
Answer: Draw a single line through it, initial it, and enter the correct information
Errors are lined out with a single line and initialed so the original entry stays readable for audit.
What is the main purpose of the Army Oil Analysis Program (AOAP) for aircraft engines and gearboxes?
Answer: To find abnormal wear metals in oil samples before a component fails
AOAP uses lab analysis of oil samples to spot wear trends and impending failures early.
Which type of message is used to report an urgent safety problem that may require grounding or inspecting a fleet?
Answer: Safety-of-Flight (SOF) message
SOF messages address hazards urgent enough to restrict, inspect, or ground aircraft.
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