# SDR 9JLA202108168195

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2021
- Submitted: August 16, 2021
- Operation: Air carrier
- Aircraft: [N831HS](https://openairdocs.org/aircraft/N831HS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0216
- Aircraft time: 4,268 hours, 3,577 cycles
- System (JASC): [2312 · VHF Communications System](https://openairdocs.org/jasc/2312)
- Part: Vhf Comm
- Part number: 8221468102
- Part serial: 3LI1T
- Condition: Failed
- Location: Nr 1
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA202108168195

## Discrepancy

THE FLIGHT CREW REPORTED THE NO1 COM UNIT INOP. THE MAINTENANCE TEAM TROUBLESHOT AND FOUND THAT THE COMM 1 VHF-4000 TRANSCEIVER FAILED. THE COMM 1 VHF-4000 WAS REMOVED AND INSTALLED AN OVERHAULED UNIT. THE SYSTEM WAS TESTED AND NO DEFECTS WERE NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.

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