Service difficulty report · Modulating Valve · Boeing 7379

Difficulty date
June 4, 2023
Submitted
June 5, 2023
Operation
Air carrier
Aircraft
N938AK
Make and model
Boeing 7379
Aircraft serial
43381
Aircraft time
3,742 hours, 1,063 cycles
Part
Modulating Valve
Part number
632920703
Part serial
1873
Condition
Faulty
Location
#2 Engine
Part time
3,746 hours, 1,065 cycles
Stage of operation
NR
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

OVERHEAD PANEL MAINT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED FAN AIR MODULATING VALVE ENG 2 REF B737-9 AMM 36-12-03-400-801. LRU AND PNEUMATICS TEST OPS CHK GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.

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