# SDR ASAA2016020615311

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2016
- Submitted: February 10, 2016
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 6,330 hours, 2,082 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 40F878
- Condition: Failed
- Location: Hf System
- Part time: 6,367 hours, 2,088 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016020615311

## Discrepancy

HF1 WAS COMPLETELY GARBLED AND UNREADABLE.  INITIAL SELCAL CHECK TESTED GOOD. MULTIPLE FREQUENCIES WERE ATTEMPTED.  ACFT GROUNDED.  R & R NR 1 HF RECEIVER/TRANSMITTER & OPS NORMAL IAW AMM 23-11-21.  RECEIVE, TRANSMIT, & SELCAL ALL SATISFACTORY.  GROUND VERIFICATION SUCCESSFUL.

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