# SDR KNFA611F

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2002
- Submitted: March 13, 2002
- Operation: Air carrier
- Aircraft: [N99AT](https://openairdocs.org/aircraft/N99AT), registered now
- Make and model: Cessna 402A
- Registry model: [Cessna 402A](https://openairdocs.org/model/cessna-402a) (OpenAirDocs)
- Aircraft serial: 402A0022
- Engine: Cont IO520*
- System (JASC): [5630 · Door Windows](https://openairdocs.org/jasc/5630)
- Part: Window
- Part number: 52111312
- Condition: Departed
- Location: Emergency Exit
- Part time: 18,753 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: D, E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KNFA611F

## Discrepancy

FLYING AT 7,000 FEET, EXPERIENCED SEVERE CLEAR AIR TURBULENCE.   LOST 1,000 FEET WITHIN SECONDS AND HEARD A LOUD POP.   LOOKED BACK AND NOTICED THE EMERGENCY EXIT WINDOW WAS GONE.

---
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.