# SDR ASAA2013041394456

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2013
- Submitted: April 16, 2013
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 26,021 hours, 7,691 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 1696G0
- Condition: Failed
- Location: Nr 1 Hf Sys
- Part time: 25,057 hours, 7,496 cycles
- Stage of operation: TX
- 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/ASAA2013041394456

## Discrepancy

HF 1 DOES NOT TRANSMIT OR RECEIVE CAN NOT HEAR SIDE TONE.  ACFT GROUNDED. CONFIRMED FAILURE NO TRANSMIT OR RECEIVE & NO SIDE TONE.  REPLACED NR 1 HF TRANSCEIVER IAW AMM 23-11-21-000-801.  PERFORMED GROUND VERIFICATION OPS CHECK IAW AMM 23-11-00-730-801. OPS NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.