Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
March 23, 2023
Submitted
March 27, 2023
Operation
Air carrier
Aircraft
N472AS
Make and model
Boeing 737990ER
Aircraft serial
60580
Aircraft time
29,638 hours, 9,153 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
CR
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

@360 FO FMC FAIL VTK. RAN QRH "FMC FAIL" - SINGLE FMC OPP. GROUNDED - YES. ON INITIAL EVALUATION FOUND BOTH FMCS OPERATING NORMALLY. ACCOMPLISHED FMCS BITE REF B737-900 FIM 34-61 TASK 801. FOUND INFLT MAINT MSG "RESYNC" FOR FMC R AND "PRES POS LAT-RATE" FOR FMC L. ACCOMPLISHED FIM 34-61 TASK 824, NO FAULTS FOUND ON ADIRS BITE, DETERMINED TO BE INTERMITTENT FAULT. ACCOMPLISHED OPERATIONAL TEST FOR FMCS L & R REF. B737-900 AMM 34-61-00, ALL OPERATIONS NORMAL AT THIS TIME. A/C GOOD FOR SERVICE.