POWER ON CHECKS

Seq.

No.

Item and Procedure

No.

Item and Procedure

15.12

All

Lubricate IAW lubrication chart contained in TM

Forward rotary-wing head reservoirs (hub, pitch varying,

Areas

55-1520-240-23.

and vertical pin) for proper oil levels. Entire assembly

for leaks, security of components, and hardware. Blade

POWER ON CHECKS

jumper wires for security, cuts, kinks, or fraying. Sight

glasses for clarity and signs of metallic particles in

WARNING

reservoir. Rotor hub for damage.

15.13

Rotary-wing blade shock absorbers for leaks and proper

oil levels. Exposed portion of piston rods for cleanliness.

Before performing each power on check, make

Vent valves for proper positions. Lockwasher tang for

sure all personnel and equipment are clear of the

engagement in piston slot.

system(s) being tested. The aircraft must be clear

15.14

Rotary-wing blades for damage, cracks, and unbonding.

of all obstructions or injury to personnel or damage

Trim tabs for cracks, damage, and unbonding. Tip

to aircraft may result.

covers for damage and security. Nose cap for damage

P.1

APU (running). Electrical and hydraulic power applied.

or unbonding. Shock absorber attachment brackets,

Check APU for fuel and oil leaks.

including filament winding filler material, for cracks and

voids. Check blade root end up to, but not including, first

P.2

Maintenance panel for proper pressure and temperature

indications, PUMP FAULT and FILTER CHANGE light

lag damper bracket winding for cracks. Ensure bottom

indicators off, ground contact lights (if installed) on.

surface of blade root end is not contacting pitch varying

housing lug.

P.3

Set maintenance panel GND switch to test and check

indicators for proper operation. Set switch to RESET and

15.15

Forward transmission fairing work platforms, access

check indicators for reset position. Press to test caution

doors, and panels for damage, closed and latched.

lights.

Latches and latch plates for security and condition. NVG

light for condition.

P.4

Check for hydraulic leaks and security of components

in the flight control closet, ramp area, fwd pylon and aft

LUBRICATION

pylon hydraulic compartments.

"FOD REMINDER"

CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION.

TM 55-1520-240-PMD

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