# SDR ASAA2014122510066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 25, 2014
- Submitted: December 29, 2014
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 27,637 hours, 8,571 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Radio
- Condition: Malfunctioned
- Location: Nr 1 Hf
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014122510066

## Discrepancy

NR 1 HF RADIO FREQUENCY DISPLAY READS "FAIL/FAIL".  RADIO TUNES AND TRANSMIT, RECEIVES NORMAL.  AFTER 10 SECONDS FAIL WARNING APPEARS.  ACFT GROUNDED.  RESET NR 1 HF AND NR 2 HF, PERFORMED BITE CHECK PROCEDURE.  NO FAULTS NOTED,  NO FAIL INDICATED, REF AMM FIM TASK 23-11, TASK 801.

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