What was found
AUTOTHROTTLE WONT STAY ENGAGED, DISENGAGES AUTOMATICALLY FAULT 223-130-00. ACFT GROUNDED. FOUND NUMEROUS FAULT CODE 22-31687 FOR ASM 1. UNABLE TO DUPLICATE. REPLACED NR 1 ASM. INSTALLLATION TEST GOOD. REF A/C MM 22-31-91.
- Difficulty date
- September 2, 2013
- Submitted
- September 4, 2013
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 2,133 hours, 686 cycles
- System (JASC)
- 2230 · Auto Throttle System
- Part
- Servo
- Part number
- 305RAA1
- Part serial
- AS09015
- Condition
- Failed
- Location
- Autothrottle
- Part time
- 2,156 hours, 692 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.