Service difficulty report · Engine · Boeing 747230B

Difficulty date
February 1, 2005
Submitted
February 4, 2005
Operation
Air carrier
Aircraft
N508MC
Make and model
Boeing 747230B
Aircraft serial
21644
Aircraft time
96,837 hours, 17,937 cycles
Engine
Ge CF650E2
Engine time
46,260 hours, 6,449 cycles
Part
Engine
Part number
CF650E2
Part serial
530349
Condition
Stalled
Location
Nr 3
Part time
46,260 hours, 6,449 cycles
Stage of operation
CR
How discovered
O
Nature of condition
M, R, J
Precautionary procedure
E

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

What was found

DURING CRUISE AT FL 310, NR 3 ENGINE COMPRESSOR STALLED, EGT WENT TO 500 DEGREES, N1 50 PERCENT, N2 40 PERCENT. PERFORMED RESTART THE ENGINE WOULD NOT START PAST 30 PERCENT N1, 40 PERCENT N2, WITH EGT AT 625 DEGREES & F/F AT 400 PPH. THROTTLE MOVEMENT HAD NO EFFECT. ENGINE SHUT DOWN. REMOVED AND REPLACED NR 3 ENGINE PER MM 71-00-02. PERFORMED ENGINE RUN PER 71-00-00. ALL PARAMETERS & INDICATION NORMAL.