# SDR ASAA2016032116047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2016
- Submitted: March 23, 2016
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 9,493 hours, 3,107 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Condition: Malfunctioned
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016032116047

## Discrepancy

AUTOTHROTTLE DISENGAGED IN FLIGHT.  C/B TRIPPED.  ACFT GROUNDED.  RESET C/B REF AMM 20-60-01. ACCOMPLISHED A/T SYS TEST IAW AMM TASK 22-31-00 AND ALL TEST OPS CHECK GOOD. DFCS LRU TEST FOR DFCS/AT OPS CHECK GOOD, REF AMM 22-11-00.  HGS SENSOR TEST FOR FCC/A/T OPS CHECK GOOD, REF AMM 34-36-00.

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