SDR ASAA2022071539094

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: July 15, 2022
Submitted: July 18, 2022
Operation: Air carrier
Aircraft: N471AS
Make and model: Boeing 737990ER
Aircraft serial: 41703
Aircraft time: 29,151 hours, 9,146 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: UNKNOWN
Condition: Failed
Location: Unknown
Stage of operation: NR
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

CA FMC FAIL FOR 1 MIN THEN CAME BACK. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 801 BITE OF BOTH FMC'S, ALL SENSORS GOOD, NO INFLIGHT FAULTS ON LEFT FMC, RIGHT LEG 1 FAULTED PRESS POS RATE. ACCOMPLISHED FIM 34-61, TASK 824, NO FAULTS NOTED.