# SDR P5CA0701516

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2007
- Submitted: March 23, 2007
- Operation: Air carrier
- Aircraft: [N450PA](https://openairdocs.org/aircraft/N450PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30808
- Aircraft time: 27,161 hours, 4,636 cycles
- System (JASC): [2397 · Communications System Wiring](https://openairdocs.org/jasc/2397)
- Part: Coupler
- Part number: 8220987003
- Part serial: 271AND1944
- Condition: Failed
- Location: Hf System
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0701516

## Discrepancy

LEFT AND RIGHT HF TRANSMITTERS WENT INOPERATIVE.  REPLACED LEFT AND RIGHT HF COUPLERS.  OPERATIONAL CHECKS GOOD.

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