Service difficulty report · Valve · Boeing 747228F

Difficulty date
July 12, 2004
Submitted
July 26, 2004
Operation
Air carrier
Aircraft
N536MC
Make and model
Boeing 747228F
Aircraft serial
21576
Engine
Ge CF650*
Part
Valve
Part number
777738561973961
Condition
Erratic
Location
Nr 4 Engine
Stage of operation
DE
How discovered
C
Nature of condition
Y, J
Precautionary procedure
O

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

What was found

NR 4 ENGINE SHUTDOWN DURING DECENT: NR 4 ENGINE SHUTDOWN RUMBLE AND EGT RISING. AFTER RISING RELIGHT IS STARTED SURGING. SHUTDOWN AGAIN. NR 4 HIGH STAGE VALVE DEACTIVATED, CLOSE AND PERFORMED ENGINE RUN UP, CHECK NORMAL, ENGINE RUN BY FLT CREW AND NR 4 ENGINE INSPECTED OK IAW MM 72-00-00, ITEM DEFFERED TO MEL 36-1. CONF NR M04-163. DMI M04-163 IS CLOSED 7/12/04 AT ORD.