Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
April 5, 2022
Submitted
April 7, 2022
Operation
Air carrier
Aircraft
N468AS
Make and model
Boeing 737990ER
Aircraft serial
41735
Aircraft time
28,654 hours, 9,137 cycles
Part
Fmc
Part number
UNKNOWN
Condition
Shutdown
Location
Unknown
Stage of operation
NR
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

LEFT FMC KEEPS SHUTTLING DOWN. GROUNDED - YES. PERFORMED FMC BITE IAWB737-900 FIM 34-61 TASK 801 SYS TEST FOUND NORMAL. UNABLE TO DUPLICATE FMC SHUTTING DOWN. FMC TRANSFER SWITCH RETURNED TO ORIGINAL CONFIG.