TM 1-1520-238-T-4
Change 8
6–49
6–12.
DRIVE SYSTEM – INDICATORS MAINTENANCE OPERATIONAL CHECK
6–12
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Personnel Required:
67R
Attack Helicopter Repairer
68F
Aircraft Electrician
References:
TM 1-1520-238-T-5
TM 1-1520-238-T-6
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
Paragraph 1–17
Maintenance headset
connected
Paragraph 6–10
DRIVE SYSTEM –
POWER UP
completed
WARNING
Make sure that helicopter safing procedures are accomplished. Observe all
safety precautions during troubleshooting or maintenance procedures.
Failure to do so could result in death or serious injury.
NOTE
Refer to pilot station (fig. 6–12) and CPG station (fig. 6–13) for cockpit
configuration and equipment.
If referenced out of one paragraph or volume and into another for
additional troubleshooting, upon completion of the task, return to the
maintenance operational check for the original paragraph or volume.
1. Perform drive system visual inspection (TM 1-1520-238-23).
NOTE
If APU is running, perform APU – POWER DOWN.
2. Complete the maintenance operational check as follows:
Task
Result
a. On pilot center circuit breaker panel
(fig. 6–15), close VIB MON and ENG
START circuit breaker.
If VIB MON circuit breaker does not stay closed, go to
paragraph 6–43.
If ENG START circuit breaker does not stay closed,
refer to TM 1–1520–238–T–6 to troubleshoot PILOTS
ELECT PWR PANEL.
