SDR ASAA2022122091191

Service difficulty report · Anti-Ice Valve · Boeing 7379

Difficulty date: December 19, 2022
Submitted: December 21, 2022
Operation: Air carrier
Aircraft: N921AK
Make and model: Boeing 7379
Aircraft serial: 43337
Aircraft time: 4,415 hours, 1,258 cycles
System (JASC): 3010 · Airfoil Anti/De-ice System
Part: Anti-Ice Valve
Part number: 632160683
Part serial: 6321606810348
Condition: Faulted
Location: Lt Wing
Part time: 4,413 hours, 1,257 cycles
Stage of operation: TX
How discovered: 9
Nature of condition: J
Precautionary procedure: O

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

What was found

ON ARRIVAL, WING ANTI ICE WAS POSITIONED ON AND L VALVE LIGHT STAYED ILLUMINATED, MASTER CAUTION CAME ON AFTER 10 SECONDS. GROUNDED - YES. REMOVED AND REPLACED LH WING ANTI ICE VALVE REF B737-9 AMM 30-11-11-000-801, 30-11-11-400-801. OPS CHECK GOOD REF AMM 30-11-11-710-801.

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