# SDR ASAA2022021937500

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2022
- Submitted: February 23, 2022
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 57,611 hours, 16,721 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/ASAA2022021937500

## Discrepancy

WITH HF-1 SELECTED "FAIL" LIGHT INDICATED ON BOTH COMM PANELS. GROUNDED - YES. ACCOMP B737-800 FIM 23-11 TASK 803 FOR HF TRANSCEIVER FAIL PROBLEM. PULLED & RESET HF-1 C/B, "FAIL" INDICATIONS EXTINGUISHED IN BOTH RTP FREQ WINDOWS AND HF TUNING FREQS APPEARED WITH HF-1 SELECTED. HF-1 BITE TEST & OPS NRML REF FIM 23-11 TASK 803. ETOPS SIGNIF SYS - GND VERIFICATION SUCCESSFUL.

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