- Difficulty date
- November 9, 2019
- Submitted
- November 13, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35199
- Aircraft time
- 36,797 hours, 10,789 cycles
- Part
- Actuator
- Part number
- 158300101
- Part serial
- 22950
- Condition
- Failed
- Location
- Autopilot
- Part time
- 36,807 hours, 10,791 cycles
- Stage of operation
- NR
- 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.
What was found
AUTOPILOT "A" FAILED. GROUNDED - YES. DUE TO HISTORY, REMOVED & REPLACED A/P AILERON ACTUATOR (A/P A) REF AMM 22-11-25. ALSO REPLACED HYDRAULIC PRESSURE SWITCH (NEW) REF AMM 22-11-40 AS PRECAUTIONARY. ACCOMPLISHED ALTERNATE DEACTIVATION PROCEDURE REF ASA MAINTENANCE PROGRAM CHAPTER 5, SECTION 5-07-01, TABLE 3, ITEM 1 & 4. REVERSED ALTERNATE DEACTIVATION PROCEDURE.