# SDR ASAA2019120311486

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2019
- Submitted: December 4, 2019
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 41,071 hours, 12,239 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Warning Message
- Condition: False Activation
- Location: Nr 1 Hf
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019120311486

## Discrepancy

HF #1 SHOWS FAIL MESSAGE. GROUNDED - YES. CYCLED C/B'S - SYS RESTORED AND CKS NML REF B737-800 FIM 23-11 TASK 802. COMM & BITE CK GOOD. GND VERIFICATION SUCCESSFUL.

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