# SDR ASAA2014082308915

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 23, 2014
- Submitted: August 25, 2014
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 7,263 hours, 2,310 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 180TR2
- Condition: Failed
- Location: Hf Comms
- Part time: 14,646 hours, 4,559 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014082308915

## Discrepancy

CAN NOT TRANSMIT ON HFI.  ACFT GROUNDED.  NO KEYLINE WHEN MIC IS KEYED. TRIED FROM FRONT OF NR 1 TRANSCEIVER AND SAME RESULT.  REPLACED HF NR 1 TRANSCEIVER IAW AMM 23-11-21-000-801 AND 23-11-21-400-801.  GROUND FUNCTIONAL CHECKED GOOD IAW AMM 23-11-21-400-801.

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