SDR ASAA2022010637100

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: January 6, 2022
Submitted: January 14, 2022
Operation: Air carrier
Aircraft: N457AS
Make and model: Boeing 737990ER
Aircraft serial: 36355
Aircraft time: 28,839 hours, 9,247 cycles
System (JASC): 4960 · APU Controls
Part: Unknown
Condition: 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

ON SHUTDOWN APU FAULT LIGHT. GROUNDED - YES. CONFIRMED FAULT CODE 49-61223 STARTED B737-900 FIM 49-60 TASK 812 A - F (4)(F). ACCOMPLISHED CHECK OF WIRE HARNESS (ENGINE), NO FAULTS NOTED, REF FIM 49-60 TASK 812 F. (4)(F)3) AND (5) (A)-(F)1). APU BITE NOT ACCOMPLISHED DUE TO POWER OFF FOR OTHER MAINT. ACCOMPLISHED FIM AR:49-60 TASK 812 STEPS A. THRU F.(6) 5). REPLACED INLET TEMP. SENSOR, BITE CHECK OK. REF B737-900 AMM 49-61-31-400-801.