# SDR AALA201604189002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2016
- Submitted: April 18, 2016
- Operation: Air carrier
- Aircraft: N204UW
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 30886
- Aircraft time: 50,523 hours, 14,685 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Hf Comm
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201604189002

## Discrepancy

AIRCRAFT WAS GNDED.  BOTH HF RADIOS INOPERATIVE.  UNABLE TO COMMUNICATE ON ALL FREQUENCY.  TRIED TWO NEW HF TRANSCEIVERS, UNABLE TO TRANSMIT OR RECEIVE ON FREQUENCIES 6.640 & 11.342 MHZ, NYC & SFO STATIONS.  INSPECTED FEED LINE INSIDE VERTICAL STABILIZER WITH NO DEFECTS NOTED IAW AMM 23-11-03 & 23-11-01, NO HELP.  FURTHER TROUBLESHOOTING NEEDED.  CONTINUED THE TROUBLESHOOTING BY ACCOMPLISHING SYS BITE WITH NO PROBLEMS NOTED IAW FIM 23-11-00-815-804 & PERFORMED A RADIO CHECK WITH SFO WITH NO PROBLEMS.

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