# SDR ASAA2013022894031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2013
- Submitted: March 5, 2013
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 16,217 hours, 5,089 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transmitter
- Condition: Unknown
- Location: Hf System
- 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/ASAA2013022894031

## Discrepancy

HF TRANSMITTER DOES NOT TRANSMIT WHEN TRANSMISSIONS ARE MADE ON HF 1 OR HF 2 NEITHER SF RADIO NOR OTHER ACFT CAN TRANSMIT, UNABLE TO DETERMINE IF CARRIER WAVE IS GOING OUT.  RECEIVER WORKS FINE VHF TRANSMITTER WORK FINE.  NR 1 HF TESTS GOOD, REF TASK 23-11-00-710-801.  NR 2 HF TEST GOOD IAW SAME.  GROUND CHECKED, OPS NORMAL.

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