Service difficulty report · Spur Gear · Airbus A320231

Difficulty date
September 2, 2004
Submitted
March 24, 2005
Operation
Air carrier
Aircraft
N620AW
Make and model
Airbus A320231
Aircraft serial
052
Aircraft time
48,118 hours, 21,677 cycles
Engine
Iae V2500A1
Engine time
36,542 hours, 16,631 cycles
Part
Spur Gear
Part number
5009392
Condition
Galled
Location
Nr 1 Engine
Stage of operation
TO
How discovered
O
Nature of condition
R
Precautionary procedure
C, D

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

What was found

ABORT T/O, NR 1 ENG ROLLED BACK TO IDLE WHEN BRAKES RELEASED. PRIOR, NR 1 ENG SHUTDOWN WHEN THROTTLES ADV & BRAKES RELEASED. INSP INLET & EXHAUST, BITE TEST OF CFDS & FADEC 1A&1B, HI PWR ENG RUN GOOD. *S/D* 10TH STG SOLENOID VLV INPUT LINE HAND TIGHT, TORQUED LINE. REPLACED NR 1 ENG DEDICATED ALTERNATOR, FMU, LO/HI PRESS FUEL PUMP & FUEL FILTER. *S/D* VENDORS TEST OF FUEL PUMP CONFIRMED FAILURE OF UNIT FOR FUEL FLOW ERODED BEYOND LIMITS. BEARINGS WORN & PUMP CAVITATED. REPLACED CARBON FACE SEALS, 3 BEARINGS & GEAR ASSY. TEST OF FMU FAILED SET POINTS OF CALIBRATION CURVE DUE TO LOSS OF METERING VLV SPILL PRESS. MV MOTOR FILTER BLOCKED & RECEPTACLES CONTAM BY FUEL, REPLACED FILTER & RECEPTACLES.

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