# SDR ASAA2021110736545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2021
- Submitted: November 9, 2021
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 48,366 hours, 14,258 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- 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/ASAA2021110736545

## Discrepancy

HF1 FAIL. GROUNDED - YES. BITE CHECK ACCOMPLISHED IAW B737-800 FIM 23-11 TASK 801 OPS CHECK OF HF1 SYSTEM GOOD.

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