# SDR ASAA1159522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2011
- Submitted: April 25, 2011
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 13,226 hours, 3,956 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 1713X4
- Condition: Malfunctioned
- Location: E&E Bay
- Part time: 6,777 hours, 2,155 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1159522

## Discrepancy

NR 2 HF RADIO WILL NOT TRANSMIT MIC WILL EITHER NOT CYCLE OR RADIO STICKS IN TUNING MODE WITH A CONTINOUS TUNNING TONE.  MUST CYCLE TRANSMIT SWX TO STOP.  CONFIRMED FAULT.  REPLACED NR 2 HF TRANSCEIVER PER AMM 23 11 21 400 801.  GROUND SYSTEM VERIFICATION CHECK GOOD.  ACFT OK FOR SERVICE.

---
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.