Service difficulty report · Start Valve · Boeing 747212B

Difficulty date
May 12, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N485EV
Make and model
Boeing 747212B
Aircraft serial
20712
Part
Start Valve
Condition
Failed
Location
Nr 3 Engine
Stage of operation
IN
Nature of condition
J
Precautionary procedure
E

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

What was found

JFK - FLT 310 - NR 3 START VALVE OPEN LIGHT ILLUMINATED. ACCOMPLISHED ABNORMAL PROCEDURE, ENGINE SHUT-DOWN. WHEN ENGINE WAS THROTTLED BACK, ENGINE STALLED. NO ABNORMAL EGT EXCURSIONS NOTED. OCCURRED ABOUT 1.20 EPR. REMOVED AND REPLACED ENGINE NR 3 START VALVE AND PRESSURE SWITCH PER MM 80-11-80. OPS CHECK GOOD. PERFORMED ENGINE INSPECTION PER MM 71-00-43. PERFORMED BORESCOPE INSPECTION PER 72-00-00. PERFORMED WINDMILLING INSPECTION PER 72-00-00. ENGINE OPS CHECK GOOD PER 71-00-00. CHECKED MAIN OIL FILTER AND CHIP DETECTOR. FOUND OK. ENGINE START VALVE LIGHT DEFERRED PER MEL 80-1. REF: CONTROL NR 96-13. (X)

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