SDR ASAA2022050638245

Service difficulty report · Apu · Boeing 7379

Difficulty date: May 6, 2022
Submitted: May 10, 2022
Operation: Air carrier
Aircraft: N933AK
Make and model: Boeing 7379
Aircraft serial: 44098
Aircraft time: 377 hours, 104 cycles
System (JASC): 4960 · APU Controls
Part: Apu
Condition: Warning Light
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. GROUNDED - YES. FOUND FAULT CODES 49-61149 ECU INTERNAL FAILURE AND 49-61002 APU CONTROLLER DURING INTERROGATION OF OMF. REF B737-9 IFIM 49-60-00-810-848. RMVD AND RPLCD ECU . WHILE DOING ECU OPS TEST. FOUND DMM CIRCUIT FAILED. MESSAGE 49-72104. SYS REMAINS ON 49-11-01. PERFORMED APU OPS TEST, TEST NORMAL NO FAULT LIGHT IAW AMM 49-11-00-71-802.THIS CLEARS MEL 49-11-01 PLACARD REMOVED SEAMC ARNIE NOTIFIED.

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