# SDR ASAA2018030923804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2018
- Submitted: March 12, 2018
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 40,185 hours, 11,895 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 8220990004
- Part serial: 3768
- Condition: Intermittent
- Location: Nr 1 Hf System
- Part time: 24,198 hours, 7,103 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018030923804

## Discrepancy

FAIL DISPLAY ON BOTH ACTIVE AND STBY WINDOWS OF THE NR 1 HF.  ACFT GROUNDED.  DISCREPANCY WAS INTERMITTENT.  NR 2 HF WAS NORMAL.   REPLACED THE NR 1 HF TRANSCEIVER.  OPS NORMAL IAW AMM 23-11-21.

---
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.