# SDR ASAA201912031487

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2019
- Submitted: December 4, 2019
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 46,157 hours, 14,014 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Hf Comm
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201912031487

## Discrepancy

CANNOT TRANSMIT ON HF1. GROUNDED - YES. REF B737-800 FIM 23-11 TASK 801, PERFORMED #1 HF BITE TEST. BITE TEST PASSED, NO FAULTS. REF FIM 23-11-806, PERFORMED #1 HF OPS CHECK. #1 HF OPS NORMAL. GROUND VERIFICATION SUCCESSFUL.

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