# SDR AALA2019121329043

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2019
- Submitted: December 13, 2019
- Operation: Air carrier
- Aircraft: [N840AN](https://openairdocs.org/aircraft/N840AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40656
- Aircraft time: 4,052 hours, 414 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019121329043

## Discrepancy

AIRCRAFT NOT GROUNDED: PILOT REPORTS AUTO THROTTLE DISCONNECTED AFTER APPROX. 5 HOURS OF FLIGHT WITH CORRESPONDING AUTO THROTTLE  DISC & AUTO THROTTLE R/H MESSAGES. AUTO THROTTLE R/H MESSAGE WENT OUT AFTER A FEW SECONDS BUT A/T REMAINED DISCONNECTED. WAS ABLE TO RE-ENGAGE A/T WITH NO OTHER OCCURENANCES. MAINTENANCE ACCOMPLISHED THRUST MANAGEMENT SYSTEM OPS CHECK IAW AMM 22-31-00, CHECKS NORMAL & NO FAULTS NOTED IAW AMM 22-31-00.

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