# SDR ASAA2019083093539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 2019
- Submitted: August 31, 2019
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 47,453 hours, 14,081 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: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019083093539

## Discrepancy

HF NR 1 SHOWING FAIL ON ACTIVE AND STANDBY. GROUNDED - YES. CYCLED A/C POWER & BATT OFF & ON. FAIL LIGHT CLEARED C/W FIM TASK 23-11, 802 & HF TRANSCIEVER BITE TEST TASK 23-11, 801. NO FAULTS INDICATED. OPS NORMAL.

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