# SDR ASAA2018100226349

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2018
- Submitted: October 4, 2018
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 37,099 hours, 11,102 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 17H34V
- Condition: Defective
- Location: Hf Comm
- Part time: 31,788 hours, 9,517 cycles
- Stage of operation: NR
- 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/ASAA2018100226349

## Discrepancy

UNABLE TO TRANSMIT ON HF RADIO NR 1. ALL OTHER FUNCTIONS WORK. GROUNDED - YES. DUPLICATED DEFECT COULD RECEIVE BUT NOT TRANSMIT. REPLACED NR 1 HF TRANSCEIVER REF AMM 23-11-21, OPS CHECK NORMAL, SUCCESSFUL GROUND VERIFICATION.

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