Service difficulty report · Start Valve · Boeing 7379

Difficulty date
July 3, 2023
Submitted
July 5, 2023
Operation
Air carrier
Aircraft
N934AK
Make and model
Boeing 7379
Aircraft serial
43374
Aircraft time
5,044 hours, 1,463 cycles
Part
Start Valve
Part number
632161031
Part serial
GRT62803
Condition
Faulty
Location
#1 Engine
Part time
3,977 hours, 1,126 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

NEAR END OF START CYCLE OF ENG NO 1 ALL 5 ENGINE ALERT BOXES FLASHED FOR APPR 5 SEC WITH START VALVE BOX ANNUNCIATED. FLASHING STOPPED AND ALL BOXES CLEARED ON THEIR OWN WHEN START VALVE CLOSED. NO OTHER ABNORMAL ENGINE INDICATIONS OR ANNUNSIATIONS. GROUNDED - YES. REPLACED #1 ENG STARTER AIR VALVE REF MM 80-11-02. LK AND OPS CK GOOD.

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