What was found
BOTH AUTO PILOT A & B WILL NOT ENGAGE. TRIED BOTH CMDS AND CWS. ACFT GROUNDED. REPLACED STAB TRIM CUTOUT RELAY R384 IAW WDM 22-13-11. PERFORMED AMM 27-41-91-700. TEST PASSED.
- Difficulty date
- September 25, 2017
- Submitted
- September 26, 2017
- Operation
- Air carrier
- Aircraft
- N461AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36363
- Aircraft time
- 14,121 hours, 4,628 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Relay
- Part number
- BACR13CG2AB
- Condition
- Failed
- Location
- Autopilot
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.