What was found
LEFT FMC FAILED IN CRUISE FLT AT FL380. GROUNDED - YES. VERIFIED LH FMC FAILED. ACCOMPLISHED B737-900 FIM 34-61 TASK 807 TEST OF FMC, OKAY. FMC PROMPT IS NOW SHOWN ON MCDU PAGE. NO LH FMC FAILURE MESSAGE NOTED ON BITE TEST.
- Difficulty date
- January 28, 2020
- Submitted
- January 30, 2020
- Operation
- Air carrier
- Aircraft
- N477AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40716
- Aircraft time
- 18,715 hours, 5,899 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Left
- Stage of operation
- CR
- 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.