What was found
L FMC FAILED 3 TIMES IN CRUISE FLIGHT RESET TWO TIMES ON ITS OWN AND 1 TIME VIA THE CHECKLIST. GROUNDED - YES. DUE TO FAULT HIST, REMOVED AND REPLACED LEFT FMCS COMPUTER IAW B737-AMM 34-61-02/401. FMCS OPS TESTED NORMAL.
- Difficulty date
- July 15, 2019
- Submitted
- July 16, 2019
- Operation
- Air carrier
- Aircraft
- N435AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 43292
- Aircraft time
- 22,730 hours, 7,397 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Part number
- 1762000101
- Part serial
- 007485
- Condition
- Intermittent
- Location
- E&E Bay
- Part time
- 22,974 hours, 7,369 cycles
- 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.