Service difficulty report · Engine · Boeing 737347

Difficulty date
October 29, 2003
Submitted
December 29, 2003
Operation
Air carrier
Aircraft
N312WA
Make and model
Boeing 737347
Aircraft serial
23598
Aircraft time
47,220 hours, 32,369 cycles
Engine
Ge CFM563B1
Engine time
43,124 hours, 29,686 cycles
Part
Engine
Part number
CFM563
Part serial
721164
Condition
Overtemp
Location
Nr 1 Engine
Part time
43,124 hours, 29,686 cycles
Stage of operation
CL
How discovered
O
Nature of condition
M
Precautionary procedure
A

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

What was found

ON TAKEOFF ROLL, NR 1 ENGINE EGT WAS INCREASING TO 954 DEGREE CELSIUS. THROTTLES (AUTO THROTTLES) HAD TO BE DISCONNECTED TO KEEP ENGINE EGT FROM CLIMBING HIGHER. N1 WAS 91 PERCENT, N2 WAS 102 PERCENT AND INCREASING. FUEL FLOW NORMAL ON T/O ROLL. REPLACED ENGINE.