# SDR ASAA201912041498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2019
- Submitted: December 5, 2019
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 47,648 hours, 14,275 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Warning Message
- Condition: False Activation
- Location: Hf 1
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201912041498

## Discrepancy

DURING PREFLIGHT, HF 1 SHOWS FAIL IN BOTH WINDOWS. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 23-11 TASK 806. NO PREVIOUS HISTORY. GROUND VERIFICATION TEST NORMAL.

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