What was found
DUAL FMC FAIL 3X ON THE WAY TO ANC. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 801, FOUND FAILURE ON BOTH FMC'S. FOUND "PGM FAULT" FOR FMC 1 AND FMC 2. PERFORMED FIM 34-61 TASK 807, NO CURRENT FAULTS.
- Difficulty date
- January 3, 2020
- Submitted
- January 7, 2020
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 16,303 hours, 5,302 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.