# SDR ASAA2021082835810

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2021
- Submitted: August 31, 2021
- Operation: Air carrier
- Aircraft: [N913AK](https://openairdocs.org/aircraft/N913AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44079
- Aircraft time: 1,347 hours, 559 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Radio
- Condition: Faulted
- Location: Nr 1 Hf
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021082835810

## Discrepancy

#1 HF RADIO IS UREADABLE IN FLIGHT. GROUNDED - YES. PERFORMED HF COMM OSP TEST . TEST NORMAL. MADE READABLE CALL TO SFO. TWICE FROM HF1 AND HF2. IAW 53-11-00-730-801. A/C OK FOR SERVICE. SEAMC ARNIE NOTIFIED.

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