SDR 9615666729

Service difficulty report · Compressor · Boeing 747251F

Difficulty date
July 20, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N629US
Make and model
Boeing 747251F
Aircraft serial
22388
Engine
Pwa JT9D7F
Part
Compressor
Condition
Stalled
Location
Nr 4 Engine
Stage of operation
TX
Nature of condition
J, R
Precautionary procedure
E, D

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

What was found

WHILE WAITING FOR TAKEOFF, THE NR 4 ENGINE EXPERIENCED A SILENT COMPRESSOR STALL. AS EGT ROSE TO 950 DEGREES AND OIL PRESSURE LOW LIGHT ILLUMINATED, CREW FOLLOWED COCKPIT OPERATING PROCEDURE, SHUT DOWN THE ENGINE, AND RETURNED TO THE GATE. MAINTENANCE PERFORMED FIRST STALL PROCEDURE PER MAINTENANCE MANUAL AND NO DISCREPANCIES WERE NOTED. AIRCRAFT RETURNED TO SERVICE.