Service difficulty report · Start Valve · Boeing 7379

Difficulty date
July 9, 2023
Submitted
July 12, 2023
Operation
Air carrier
Aircraft
N937AK
Make and model
Boeing 7379
Aircraft serial
44100
Aircraft time
4,437 hours, 1,307 cycles
Part
Start Valve
Part number
632161031
Part serial
GRT62806
Condition
Faulty
Location
#1 Engine
Part time
900 hours, 256 cycles
Stage of operation
TX
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

AFTER START THE NO. 1 START VALVE OPEN LIGHT REMAINED ILLUMINATED ACCOMPANIED BY THE BLINKING ENG LIGHTS FOR 5-8 SECONDS. THIS CYCLE THEN REPEATED 5 OR 6 TIMES. SUBSEQUENTLY ALL THE LIGHTS EXTINGUISED AND ALL OTHER IDICATIONS REMAINED NORMAL. GROUNDED - YES. DUE TO RECENT HISTORY, REMOVED AND REPLACED #1 ENG STARTER AIR VALVE REF AMM 80-11-02. OPS TEST GOOD, A/C OK FOR CONTINUED SVC.

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