# SDR ASAA2023090144929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2023
- Submitted: September 5, 2023
- Operation: Air carrier
- Aircraft: [N960AK](https://openairdocs.org/aircraft/N960AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44092
- Aircraft time: 2,016 hours, 597 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: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023090144929

## Discrepancy

HF1 FREQUENCIES HAVE PROBLEMS UNDERSTANDING TRANSMISSIONS. ATC REPORTS OU VOICES OVER HF ARE NOT UNDERSTANDABLE AS WELL. GROUNDED - YES. PERFORMED HF OPERATIONAL TEST ON BOTH HF SYSTEMS PER AMM TASK 23-11-00-710-801. NO DEFECTS NOTED.

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