What was found
AUTO THROTTLE WILL NOT ARM. ACFT GROUNDED. VERIFIED ASM-1 FAULTS ON A/T FLT FAULT HISTORY. REMOVED & REPLACED ASM -1 REF MM 22-31-91, ASM-1. OPS NORMAL REF SAME MM AND SERVO MOTOR TEST.
- Difficulty date
- October 5, 2013
- Submitted
- October 8, 2013
- Operation
- Air carrier
- Aircraft
- N423AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 1,676 hours, 550 cycles
- Engine
- Cfmint CFM567B27
- System (JASC)
- 2230 · Auto Throttle System
- Part
- Servo
- Part number
- 305RAA1
- Part serial
- AS09128
- Condition
- Malfunctioned
- Location
- Autothrottle
- Part time
- 1,562 hours, 506 cycles
- 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.