# SDR ASAA2017012119478

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2017
- Submitted: January 23, 2017
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 35,091 hours, 10,674 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Hf Comm
- 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/ASAA2017012119478

## Discrepancy

NR 1 HF RADIO DOES NOT TUNE CORRECTLY. WE COULD NOT UNDERSTAND ATC ON EVERY FREQUENCY WE TRIED. THEY HAD A DIFFICULT TIME UNDERSTANDING US. NR 2 HF COMMUNICATIONS WERE NORMAL. GROUNDED - YES. RESET/CYCLED NR 1 HF C/B AND PERFORMED BITE OF NR 1 HF TRANSCEIVER REF FIM 23-11 TASK 801. OPERATED BOTH NR 1 AND NR 2 HF ON MULTIPLE FREQ. BOTH OPS CK GOOD XMIT AND RECEIVE.

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