SDR 9615086637

Service difficulty report · Compressor · Boeing 747251B

Difficulty date
July 13, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N637US
Make and model
Boeing 747251B
Aircraft serial
23548
Engine
Pwa JT9D7R4G2
Part
Compressor
Condition
Stalled
Location
Nr 2 Engine
Stage of operation
CL
Nature of condition
R
Precautionary procedure
O

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

What was found

DURING CLIMB, THE NR 2 ENGINE EXPERIENCED A COMPRESSOR STALL. WITH NO SPIKE IN EGT AND ALL ENGINE INDICATIONS BEING NORMAL, CREW FOLLOWED COM PROCEDURES AND CONTINUED TO AMS WITHOUT FURTHER INCIDENT. BORESCOPE INSPECTION OF HIGH PRESSURE COMPRESSOR REVEALED NO DISCREPANCIES. EVBC REPLACEMENT AND PRECISION TRIM OF EVBC/FUEL CONTROL WILL BE DONE WITHIN FIVE CYCLES.