What was found
AUTOPILOT A FAILS TO ENGAGE. AUTOPILOT B WORKS NORMALLY. GROUNDED - YES. REMOVED AND REPLACED "A" SYSTEM AILERON AUTOPILOT ACTUATOR PRESSURE SWITCH, INSTALLATION TEST PASSED REF B737-800 AMM 22-11-40.
- Difficulty date
- October 28, 2019
- Submitted
- November 9, 2019
- Operation
- Air carrier
- Aircraft
- N531AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35199
- Aircraft time
- 36,692 hours, 10,757 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Pressure Switch
- Part number
- S271T45217
- Part serial
- T01127B
- Condition
- Intermittent
- Location
- Lt Mlg Ww
- Part time
- 55,860 hours, 31,340 cycles
- Stage of operation
- AP
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.