Service difficulty report · Starter · Boeing 747422

Difficulty date
October 26, 2009
Submitted
October 26, 2009
Operation
Air carrier
Aircraft
N116UA
Make and model
Boeing 747422
Aircraft serial
26908
Aircraft time
44,718 hours, 5,279 cycles
Engine
Pwa PW4056
Part
Starter
Part number
35054367
Part serial
1153
Condition
Failed
Location
Nr 2 Engine
Stage of operation
TX
How discovered
O
Nature of condition
B, J
Precautionary procedure
D

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

What was found

CREW REPORTS: START VALVE LIGHT ON, HAD A GOOD LIGHT OFF, S-DWN ENGINE, NO EGT EXCEEDED, CMC DOWN LOD SHOW STARTER CUTOUT 2 (CAUTION) ENG2 START VLV STS AND ADVISOR Y MSG WITH MM MSG.72085. ALSO REPORT OF SMOKE FROM ENG2 EXHAUST. REPLACED STARTER MOTOR AND VALVE. STARTER SUSTAINED INTERNAL FAILURE WITH NO EXTERNAL DAMAGE.