SDR UPS804356

Service difficulty report · Relief Valve · Doug DC873F

Difficulty date: September 2, 1995
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N752UP
Make and model: Doug DC873F
Aircraft serial: 45968
System (JASC): 2915 · Hydraulic Pressure Relief Valve, Main
Part: Relief Valve
Condition: Leaking
Location: Hyd Syst
Stage of operation: LD
Nature of condition: K, J
Precautionary procedure: O

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

What was found

PILOT REPORTED, HYD FLUID LOSS. PRESSURE AFTER LANDING, AIR BRAKES WERE USED. AUX PUMP PRODUCED NO PRESSURE, BUT FLUID QUANTITY DECREASED. FOUND RT GEAR BOGIE UNLOCK PRESS RELIEF VALVE LEAKING. CAPPED OFF BOGIE UNLOCK CYLINDER HYD LINES AT STRUT MANIFOLD. PLACED ON MEL 32-6 ON M97762, LEAKING RELIEF VALVE REMOVED.

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