What was found
FMC #2 MOMENTARY LOSS - NO MAP - VTK DISPLAYED - CAME BACK IN <30 SECONDS - BUT AFTER IT CAME BACK ALL FLT PLAN & WT DATA GONE FROM BOTH FMC'S. GROUNDED - YES. ACCOMPLISHED FMCS BITE B737-900 FIM 34-61 TASK 801 OPS CHECK NORMAL.
- Difficulty date
- May 21, 2021
- Submitted
- May 24, 2021
- Operation
- Air carrier
- Aircraft
- N479AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60576
- Aircraft time
- 20,539 hours, 6,550 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Faulted
- Stage of operation
- NR
- 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.