# SDR ASAA2020031132377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2020
- Submitted: March 11, 2020
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 31,590 hours, 9,010 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 40CHGY
- Condition: Inoperative
- Location: Hf Comm
- Part time: 14,103 hours, 4,351 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/ASAA2020031132377

## Discrepancy

UNABLE TO TRANSMIT ON #2 HF. ABLE TO HEAR AND RECEIVE SELCAL ON HF #2. GROUNDED - YES. REPLACED #2 TRANSCEIVER & COUPLER REF B737-800 AMM 23-11-61 & AMM 23-11-21. #2 HF RADIO OPS CHECK GOOD IAW AMM 23-11-21 AND 23-11-61 THIS CLEARS MEL 23-11A.

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