# SDR 4EZF22071531ZV

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2022
- Submitted: July 15, 2022
- Operation: Air carrier
- Aircraft: [N31ZV](https://openairdocs.org/aircraft/N31ZV), registered now
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft serial: 127
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Efis
- Part number: 066031373300
- Part serial: 2285
- Condition: Inoperative
- Location: Co Pilot
- Stage of operation: CR
- How discovered: V
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/4EZF22071531ZV

## Discrepancy

DURING CRUISE FLIGHT FROM TNCC (CURACAO) TO TNCM (ST MAARTEN) CREW NOTICED A BURNING SMELL & NOTICED CO-PILOT'S TOP PFD BLANK. PFD CB POPPED. FLIGHT CREW DECIDED TO RETURN TO TNCC OUT OF SAFETY PRECAUTION. AFTER ARRIVAL MAINTENANCE DETERMINED THAT THE CO-PILOT'S PFD FAILED. THE TOP CO-PILOT'S PFD & THE MFD WERE SWAPPED AND THE MFD WAS DEFERRED AS PER THE FAA APPROVED MEL 34-30, CATEGORY C. AIRCRAFT WAS DISPATCHED WITHOUT ANY FURTHER ISSUES.

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