What was found
AT CRUISE AFTER EXPERIENCING A SLIGHT WAVE WITH AUTOPILOT ON, PITCH TRIM CONTINUED TRIMMING UP THEN DOWN UNTIL A/P WAS TURNED OFF. GROUNDED - YES. REMOVED AND REPLACED FCC-B, REF B737-9 AMM 22-11-33.
- Difficulty date
- May 22, 2023
- Submitted
- May 26, 2023
- Operation
- Air carrier
- Aircraft
- N952AK
- Make and model
- Boeing 7379
- Aircraft serial
- 60390
- Aircraft time
- 2,388 hours, 696 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Computer
- Part number
- 8221604102
- Part serial
- 4T1DLM
- Condition
- Faulted
- Location
- E/E Bay
- Stage of operation
- CR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.