# SDR CALA2023010900059

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2023
- Submitted: January 9, 2023
- Operation: Air carrier
- Aircraft: [N77520](https://openairdocs.org/aircraft/N77520), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31658
- Aircraft time: 39,605 hours, 13,628 cycles
- System (JASC): [2311 · UHF Communications System](https://openairdocs.org/jasc/2311)
- Part: Hf Comm
- Condition: Inoperative
- Location: Hf 1 & 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023010900059

## Discrepancy

HF RADIOS WILL NOT TRANSMIT BITE BOTH NUMBER 1 AND NUMBER 2 TRANSCEIVERS, BITE TEST OK. GROUND OPS CHK NUMBER 1 AND 2 HF RADIOS CALLING SFO READ LOUD AND CLEAR. R&R NUMBER 1 HF TRANSCEIVER PER PRECAUTIONARY. GROUND OPS CHK OK.

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