# SDR ASAA2019081423386

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2019
- Submitted: August 15, 2019
- Operation: Air carrier
- Aircraft: [N532AS](https://openairdocs.org/aircraft/N532AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36346
- Aircraft time: 35,067 hours, 10,474 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Hf Comm
- Condition: Malfunctioned
- Location: Nr 2
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019081423386

## Discrepancy

HF#2 CONTINOUSLY DISPLAYS "FAIL' IN BOTH FREQUENCY DISPLAYS. GROUNDED - YES. PERFORMED HF2 CIRCUIT BREAKER RESET PROCEDURE REF B737-800 AMM 20-60-05. PERFORMED HF COMMUNICATIONS SYSTEM BITE REF FIM 23-11- TASK 801 AND PERFORMED HF FAULT ISOLATION REF FIM 23-11 TASK 806 ALL CHECKS GOOD ETOPS GROUND VERIFICATION SUCCESSFUL.

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