- Difficulty date
- March 19, 2023
- Submitted
- March 23, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35688
- Aircraft time
- 53,019 hours, 15,837 cycles
- Part
- Servo Motor
- Part number
- 305RAA1
- Part serial
- AS09632
- Condition
- Faulted
- Location
- Fwd Equip Bay
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO-THROTTLES WILL NOT REMAIN ENGAGED. GROUNDED - YES. CONFIRMED FAULT, A/T FAULT HISTORY SHOWS NUMEROUS ASM-2 FAULT MSG #22-31781 ASM 2 LIMIT FAIL. REMOVED & REPLACED ASM-2 REF B737-800 AMM 22-31-91, OPS CK NML. ACCOMPLISHED DFCS LAND VERIFY TEST REF AMM 22-11-00 & HGS SYSTEM TEST REF ROCKWELL COLLINS HGS 4000 SMM 34-36-00, OPS CK NML.