# SDR ASAA2023050443124

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2023
- Submitted: May 8, 2023
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 40,835 hours, 11,649 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- 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/ASAA2023050443124

## Discrepancy

BOTH HF RADIO'S WOULD TUNE ON ALL APPROPRIATE FREQUENCIES BUT NEITHER PILOT COULD TRANSMIT ON ANY HF FREQ. SELCAL WORKED NOTE NEITHER PILOT COULD WE COULD HEAR ATC AND OTHER TRAFFIC ON ALL HG FREQ'S BUT COULD NOT TRANSMIT. GROUNDED - YES. ON DEFERRAL. ATB

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