# SDR ASAA2022042338093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2022
- Submitted: April 25, 2022
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 50,186 hours, 14,901 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 16FVNG
- Condition: Failed
- Location: E/E Rack E8
- Part time: 54,705 hours, 16,098 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/ASAA2022042338093

## Discrepancy

NO SIDE TONE ON HF 2. RECEPTION IS WORKING NORMALLY, BUT CANNOT TRANSMIT. GROUNDED - YES. REMOVED & REPLACED #2 HF TRANSCEIVER. OPS CHECK NORMAL B737-800 AMM 23-11-21.

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