What was found
#1 FMC IS INTERMITTENT. GROUNDED - YES. REMOVED AND REPLACED #1 FMC CDU REF B737-800 AMM 34-61-01. DUE TO OPERATIONAL NECESSITY, REPLACED #1 FMCS COMPUTER REF AMM 34-61-02. SOFTWARE CHECK OF #1 CDU & FMC CHECKS GOOD.
- Difficulty date
- January 30, 2022
- Submitted
- February 1, 2022
- Operation
- Air carrier
- Aircraft
- N532AS
- Make and model
- Boeing 737890
- Aircraft serial
- 36346
- Aircraft time
- 42,059 hours, 12,400 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Display
- Part number
- 1741010301
- Part serial
- 001268
- Condition
- Intermittent
- Location
- Flight Deck
- Part time
- 2,342 hours, 639 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.