# SDR ASAA2014102409470

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2014
- Submitted: October 28, 2014
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 29,272 hours, 8,785 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 16GC0V
- Condition: Inoperative
- Location: Nr 2 Hf
- Part time: 29,323 hours, 8,802 cycles
- Stage of operation: TX
- 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/ASAA2014102409470

## Discrepancy

NR 2 HF WILL NOT TRANSMIT ON THE GROUND.  SATCOM 2 WORKS FINE. ACFT GROUNDED.  NO TRANSMIT/RECEIVE AND NR 1 KHZ TUNE-IN-PROGRESS TONE WHEN ANY FREQUENCY SELECTED AND KEYED.  NR 2 HF LRU STATUS TEST SHOWS GREEN, IAW MM 23-11-21, R & R NR 2 HF TRANCEIVER, OPS NORMAL REF SAME AND GOOD COMMUNICATION, IAW 23-11-00.

---
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.