Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
June 30, 2020
Submitted
July 2, 2020
Operation
Air carrier
Aircraft
N494AS
Make and model
Boeing 737990ER
Aircraft serial
41729
Aircraft time
16,704 hours, 5,221 cycles
Part
Unknown
Condition
Malfunctioned
Location
Fmc
Stage of operation
CR
How discovered
O
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

IN CRUISE FL380 RIGHT FMC FAILURE OCCURRED MOMENTARILY. FMC DID RESET ITSELF AFTER A FEW MOMENTS. GROUNDED - YES. VERIFIED LAST FLT RIGHT FMC FAILED. ACCOMP MMR NR 1 & NR 2 BITE TEST, TEST PASS REF FIM 31-31 TASK 801. ACCOMP FMC BITE REF FIM 34-61 TASK 801 ACCOMP FMC SENSOR TEST, TEST PASS REF MM 34-61-00-710-26.