# SDR ASAA2018041324243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2018
- Submitted: April 16, 2018
- Operation: Air carrier
- Aircraft: [N592AS](https://openairdocs.org/aircraft/N592AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35190
- Aircraft time: 39,225 hours, 11,940 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Hf Comm
- Condition: Malfunctioned
- 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/ASAA2018041324243

## Discrepancy

DURING FLIGHT,  UNABLE TO MAKE HF CONTACT ON ALL FREQUENCIES.  ACFT GROUNDED.  ACCOMPLISHED HF COMMUNICATION SYSTEM R/T PROBLEM FAULT ISOLATION IAW FIM 23-11 TASK 806,  AND AMM 23-11-21-740-008.  BOTH NR 1 AND 2 HF RADIO OPS CHECKED NORMAL.  CONTACTED CENTER, BOTH VOICE AND ARINC TRANSMISSION,  RECEPTION NORMAL.

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