What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS AUTO THROTTLE & AUTO PILOT DISCONNECT UNCOMMANDED. MAINTENANCE REPLACED #1 AIR DATA INERTIAL REFERENCE UNIT IAW AMM 34-21-01. ALL CHECKS ARE NORMAL.
- Difficulty date
- November 11, 2019
- Submitted
- November 13, 2019
- Operation
- Air carrier
- Aircraft
- N816NN
- Make and model
- Boeing 737823
- Aircraft serial
- 31081
- Aircraft time
- 31,934 hours, 12,715 cycles
- System (JASC)
- 3420 · Attitude and Direction Data System
- Part
- Adiru
- Part serial
- 56023702
- Condition
- Faulty
- Location
- Nr 1
- 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.