What was found
WHILE PREFLIGHTING FMC, "SINGLE FMC OPERATIONS" APPEARED ON MCDU SCRATCHPAD. GROUNDED - YES. RAN QRH AND PULLED AND RESET FMCS CMPTR 1 AND 2 CIRCUIT BREAKERS PER THE PROCEDURE. NORMAL FMC OPERATIONS WAS RESTORED.
- Difficulty date
- December 17, 2021
- Submitted
- December 21, 2021
- Operation
- Air carrier
- Aircraft
- N518AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35693
- Aircraft time
- 46,907 hours, 13,805 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.