# SDR ASAA0852535

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2008
- Submitted: February 4, 2008
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 6,036 hours, 1,716 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Radio
- Condition: Malfunctioned
- Location: Nr 1 Hf
- 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/ASAA0852535

## Discrepancy

NR 1 HF RADIO GARBLED.  SELCAL CHIME AND LIGHT OK.  FREQ 6673 & 3452 ATTEMPTED IN FLIGHT.  HF NR 2 VOICE AND SELCAL OK.  UNABLE TO VERIFY DISCREPANCY.  REPLACED AND TESTED NR 1 HF ANTENNA COUPLER IAW 23 11 61 PGS 401 409.  NO DISCREPANCIES NOTED.

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