# SDR LNOS2016FA0000357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2016
- Submitted: August 5, 2016
- Operation: General aviation
- Aircraft: [N321CK](https://openairdocs.org/aircraft/N321CK), registered now
- Make and model: Diamon DA 40
- Registry model: [Diamon DA 40](https://openairdocs.org/model/diamond-aircraft-ind-da-40) (OpenAirDocs)
- Aircraft serial: 40414
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Door
- Part number: DA452210000
- Condition: Departed
- Location: Left
- Stage of operation: NR
- How discovered: O
- Nature of condition: D
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/LNOS2016FA0000357

## Discrepancy

THE PASSENGER DOOR DEPARTED ACFT MID-FLIGHT.  THE ACFT LANDED AT THE NEAREST AIRPORT WITH NO INCIDENTS.  THE DOOR WAS NOT RECOVERED.  THE REAR DOOR RETAINING BRACKET, AD2010-25-01 WAS INSTALLED.  DOOR NOT PROPERLY SECURED BEFORE FLIGHT AND CAME LOOSE SOMETIME DURING 50 MINUTE FLIGHT.

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