What was found
FMC FAIL - DISPLAY OF "VTK" FOLLOWED BY "MAP" FAILURE FLAGS ON BOTH NAVIGATION DISPLAYS. GROUNDED - YES. AIR TURNBACK -- REMOVED AND REPLACED L/H FMC. REF B737-900 AMM 34-61-02.
- Difficulty date
- March 19, 2023
- Submitted
- March 21, 2023
- Operation
- Air carrier
- Aircraft
- N479AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60576
- Aircraft time
- 27,214 hours, 8,482 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Part number
- 1762000101
- Part serial
- 012136
- Condition
- Failed
- Location
- E/E Bay, E5-2
- Part time
- 20,888 hours, 6,389 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.