# SDR ASAA2019060329549

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2019
- Submitted: June 3, 2019
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 48,026 hours, 14,407 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Coupler
- Part number: 8220987004
- Part serial: 164226
- Condition: Failed
- Location: Nr 1 Hf Comms
- Part time: 39,742 hours, 11,758 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/ASAA2019060329549

## Discrepancy

UNABLE TO TRANSMIT ON HF 1, RECEIVE ONLY. GROUNDED - YES. REMOVED AND REPLACED #1 HF COUPLER PER B737-800 AMM 23-11-61. OPS CHECK GOOD.

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