# SDR UIEA2021082901905

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2021
- Submitted: September 1, 2021
- Operation: Air carrier
- Aircraft: [N473MC](https://openairdocs.org/aircraft/N473MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27174
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Transceiver
- Part number: 6225272120
- Part serial: 3041
- Condition: Failed
- Location: Hf Comms
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021082901905

## Discrepancy

AIR DIVERSION TO ICN - BOTH LH AND RH HF RADIOS FAILED IN CRUISE(<P ><SPAN>REPLACED LH HF TRANSCEIVER. BOTH LH AND RH HF RADIOS OPS CHECK GOOD IAW AMM 23-11-00/501.</SPAN></P> / <P> </P>)

---
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.