# SDR ASAA2022020637360

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2022
- Submitted: February 9, 2022
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 55,410 hours, 16,362 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/ASAA2022020637360

## Discrepancy

UNABLE TO TRANSMIT ON HF #2. WHEN KEYING THE MIC TO TALK THE SIDE TONE COMES ON AND STAYS ON. IT IS A CONTINUOUS TONE UNTIL THE RADIO IS TUNED TO ANOTHER FREQUENCY. GROUNDED - YES. ACCOMPLISHED OPS CHECK WITH NO FAULTS FOUND REF B737-800 AMM 23-11-00. HF #2 KEYS AND TRANSMITS NORMALLY. GROUND VERIFICATION TEST SUCCESSFUL.

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