# SDR ASAA2019070429903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2019
- Submitted: July 23, 2019
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 40,166 hours, 12,102 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Hf Comm
- Stage of operation: CR
- 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/ASAA2019070429903

## Discrepancy

HF1 & HF2 WEAK AND BARELY READABLE. TRIED MULTIPLE FREQS OVER COURSE OF FLIGHT. HF2 OPERATED SLIGHTLY MORE CLEARLY THAN HF1. GROUNDED - YES. PERFORMED A HF SYSTEM TEST OF HF #1 AND #2 PER AMM 23-11-00-730-801. CHECKS GOOD, NO DEFECTS NOTED. ALL COMMUNICATION LOUD AND CLEAR TX AND RX. GROUND VERIFICATION SUCCESSFUL.

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