SDR ASMF200407009

Service difficulty report · Servo Valve · Doug DC987

Difficulty date: July 5, 2004
Submitted: July 8, 2004
Operation: Air carrier
Aircraft: N205AM
Make and model: Doug DC987
Aircraft serial: 49405
Aircraft time: 39,469 hours, 26,203 cycles
Engine: Pwa JT8D1
System (JASC): 2910 · Hydraulic System, Main
Part: Servo Valve
Part number: 392492
Part serial: 3038ABC
Condition: Leaking
Location: Hyd System
Part time: 11,382 hours, 7,334 cycles
Stage of operation: IN
How discovered: 9
Nature of condition: K
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING TRANSIT CHECK, HYDRAULIC LIQUID LEAK WAS DETECTED ON RT MAIN LANDING GEAR WELL, BOTH SYSTEMS WERE PRESSURIZED, BRAKES AND CONTROL SURFACES WERE ACTUATED AND LEAK WAS DETECTED ON ANTI-SKID RT DOUBLE SERVO VALVE. SERVO VALVE WAS REPLACED IAW MM 32-43-02, TEST CORRECT.

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