# SDR ASAA2019072330186

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2019
- Submitted: July 25, 2019
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 47,688 hours, 14,156 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/ASAA2019072330186

## Discrepancy

HF#1 FAILED SELCAL CHECK ON 8.843 MHZ. GROUNDED - YES. PERFORMED INITIAL EVALUATION REF FIM 23-11 TASK 806. THE HF 1 COMMUNICATION SYSTEM OPERATES SATISFACTORILY, FAULT WAS INTERMITTENT. A/C OK FOR SERVICE.

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