SDR ACE0918021

Service difficulty report · Diaphragm · Beech 1900C

Difficulty date
September 18, 2003
Submitted
October 22, 2003
Operation
Air carrier
Aircraft
N1563C
Make and model
Beech 1900C
Aircraft serial
UC20
Engine
Pwa PT6A60A
Part
Diaphragm
Condition
Perforated
Location
Fuel Pump
Component
Pump
Component part number
1143890425
Stage of operation
IN
How discovered
9
Nature of condition
B
Precautionary procedure
K

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

What was found

ON PREFLIGHT INSPECTION, PILOT NOTICED FUEL LEAKING FROM THE ENGINE GANG DRAIN. MAINTENANCE REPLACED THE LOW PSI FUEL PUMP DUE TO FUEL DRAINING FROM THE DRY SIDE OF THE PRESSURE RELIEF VALVE ASSEMBLY. DISASSEMBLY OF THE PUMP REVEALED MULTIPLE HOLES IN THE DIAPHRAGM IN THE AREA AROUND THE RELIEF VALVE CONTROL SPRING SEAT.

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