# SDR AALA20161220011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2016
- Submitted: December 20, 2016
- Operation: Air carrier
- Aircraft: [N806AA](https://openairdocs.org/aircraft/N806AA), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 40624
- Aircraft time: 6,336 hours, 662 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990120
- Condition: Faulty
- Location: Comms
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20161220011

## Discrepancy

LOST RADIO COMMUNICATION.  EMERGENCY DECLARED, FLIGHT RETURNED TO DEPARTURE.    LANDED WITHOUT INCIDENT.  AIRCRAFT WAS GROUNDED.  REMOVED AND REPLACED BOTH HIGH FREQUENCY COUPLERS IAW AMM 23-11-03 AND LEFT HIGH FREQUENCY TRANSCEIVER IAW AMM 23-11-05.  OPERATIONAL CHECK GOOD.  SEE ALSO AALA20161218005.

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