Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
May 23, 2021
Submitted
May 24, 2021
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
19,643 hours, 6,233 cycles
Part
Fmc
Condition
Failed
Location
Left
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

DURING CLIMB OUT THE LEFT FMC FAILED FOR APPROXIMATELY 3 MINS. DUAL FMC OPS WERE RESTORED. GROUNDED - YES. UPON ARRIVAL TO A/C OBSERVED NML FMC OPS, ACCOMPLISHED FMC BITE BOTH FMC SENSORS OK. RIGHT FMC FAULTED LAST LEG, OPS NML REF BITE B737-900 FIM 34-61 TASK 801.