TM 1-1520-238-T-5
8–44
8–10.
ENGINE INSTRUMENTS – MAINTENANCE OPERATIONAL CHECK
8–10
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Personnel Required:
67R
Attack Helicopter Repairer (2)
152FG
Maintenance Test Pilot
References:
TM 1-1520-238-T-4
TM 1-1520-238-T-6
TM 11-1520-238-23-2
TM 1-1520-238-23
TM 1-1520-238-CL
TM 1-1520-238-PMS
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Helicopter safed
External power
application –
Electrical
TM 1-1520-238-T-4
Maintenance headset
connected
NOTE
Refer to pilot station (fig. 8–28) and CPG station (fig. 8–29) for
configurations and equipment.
If referenced out of one paragraph or volume into another for additional
troubleshooting, upon completion of the task, return to the maintenance
operational check for the original paragraph or volume.
1. Perform visual inspection of power plants and engine instruments (TM 1-1520-238-PMS).
2. Complete the maintenance operational check as follows:
Task
Result
a. Check the ENG INST circuit breaker on pilot
center circuit breaker panel (fig. 8–30) is
closed.
If pilot ENG INST circuit breaker does not stay closed,
go to paragraph 8–12.
b. Check that EMERG BATT ENG INST circuit
breaker on CPG circuit breaker panel 1
(fig. 8–31) is closed.
If CPG EMERG BATT ENG INST circuit breaker does
not stay closed (helicopters without CPG dim/test
panel installed), go to paragraph 8–13. (Helicopters
with CPG dim/test panel installed), go to
paragraph 8–14.
