TM 55-1520-240-23-1
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APPLY POWER USING APU
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INITIAL SETUP
Application Configurations:
All
Tools:
Ear Plugs
Materials:
None
Personnel Required:
Medium Helicopter Repairer (2)
Equipment Condition:
Helicopter Not Positioned Tail into Wind
Battery Connected (Task 1-39)
Battery Switch Off
Hydraulic Power Off
Remove Protective Covers (Task 1-32)
Wear ear plugs when working around
helicopter when APU is running.
Otherwise, hearing can be damaged.
Service life of gyroscopes can be
reduced under power. Open the
following circuit breakers when
applying power, unless noted:
PDP NO. 1
COMPASS (2)
COPILOT VGI
AFCS NO. 1
PDP NO. 2
PILOT VGI
AFCS NO. 2
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