# SDR ASAA2017111822613

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2017
- Submitted: November 20, 2017
- Operation: Air carrier
- Aircraft: [N533AS](https://openairdocs.org/aircraft/N533AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35201
- Aircraft time: 26,867 hours, 7,885 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017111822613

## Discrepancy

HF 1 INDICATES FAIL IN BOTH ACTIVE & STBY WINDOWS. GROUNDED - YES. ACCOMPLISHED RECYCLE OF A/C POWER & BATTERY POWER. NO FAIL INDICATION RETURNED FOR NR 1 HF SYS. SUCCESSFUL GROUND VERIFICATION OF NR 1 HF RADIO TX & RCV ACCOMPLISHED. ACCOMPLISHED NR 1 HF TRANSCEIVER BITE CK. NO FAULTS INDICATED & TEST CK'D GOOD. NO HISTORY NOTED. REF FIM 23-11 TASK 802.

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