SDR ASAA2023050343162

Service difficulty report · Unknown · Boeing 7379

Difficulty date: May 3, 2023
Submitted: May 8, 2023
Operation: Air carrier
Aircraft: N948AK
Make and model: Boeing 7379
Aircraft serial: 44090
Aircraft time: 2,288 hours, 656 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
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

APU FAULT LIGHT ILLUMINATED WHEN ATTEMPTING TO START THE APU AFTER LANDING. GROUNDED - YES. FOUND MAINT MSG 49-41254 START CONVERTER UNIT SHOWS START SYS INOP. PERFORMED B737-9 IFIM TASK 49-40-00-810-818, PERFORMED 5 SUCCESSFUL STARTS OF APU AND MESSAGE DID NOT REAPPEAR.

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