# SDR ASAA1158995

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2011
- Submitted: February 11, 2011
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 7,433 hours, 2,209 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Condition: Malfunctioned
- Location: Cockpit
- Part time: 7,423 hours, 2,197 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1158995

## Discrepancy

AUTO THROTTLES TRIPPED OFF DURING CLIMB COULD NOT RESTABLISH.  A/T FFR SHOWED NUMEROUS RATE MONITOR ASM 2 FAULTS.  A/T CURRENT STATUS AND SERVO MOTOR BITE CHECKS GOOD.  PRECAUTIONARY REPLACED A/T SERVO MOTOR NR 2 REF MM 22 31 91.  OPS CHECK NML REF SAME MM CURRENT STATUS TEST AND SERVO MOTOR TEST.

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