# SDR ASAA2019011127753

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2019
- Submitted: January 15, 2019
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 19,215 hours, 6,270 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/ASAA2019011127753

## Discrepancy

NR 1 HF RADIO HAS NO TUNING TONE ON ANY FREQUENCY. GROUNDED - YES. PERFORMED BITE CK FIM 23-11 TASK 801 HF COMMUNICATION BITE AND NR 1 HF RADIO PASSED BITE TEST WITH NO DEFECTS NOTED. GROUND VERIFICATION SUCCESSFUL.

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