SDR ASAA2022091939997

Service difficulty report · Apu · Boeing 7379

Difficulty date: September 19, 2022
Submitted: September 20, 2022
Operation: Air carrier
Aircraft: N928AK
Make and model: Boeing 7379
Aircraft serial: 44099
Aircraft time: 2,078 hours, 614 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Apu
Part number: UNKNOWN
Condition: Warning Light
Location: Unknown
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

APU FAULT LIGHT ON START UP AFTER LANDING. GROUNDED - YES. FOUND FAULT CODE 49130100 WITH CORRELATED MTX MESSAGE. 49-41254 START CONV. SHOWS START SYSTEM INOP. PERFORMED B737-9 IFIM TASK 49-40-00-810-818 START FAULT ISOL. PROCEDURE, FOUND NON ACTIVE FAULT, SUSP. INT. FAULT OK FOR SERVICE. OPERATED APU , OPS. NORMAL OK FOR SERVICE.

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