SDR ASAA2023081744657

Service difficulty report · Unknown · Boeing 737890

Difficulty date: August 17, 2023
Submitted: August 18, 2023
Operation: Air carrier
Aircraft: N597AS
Make and model: Boeing 737890
Aircraft serial: 35689
Aircraft time: 55,339 hours, 16,531 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: TX
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

WHEN POWER TRANSFERED FROM GROUND POWER TO APU CAPTAINS FMC BLANKS FOR 5 SECONDS. GROUNDED - YES. PERFORMED FIM 34-61 ASK 804, FMCS BITE PER FIM 34-61 TASK 801, NO FAULTS. RAN APU, CYCLED BETWEEN GND/APU BUSSES 6X. NO DISCREPANCIES NOTED.