Cabin door popped open in flight.

Attributes
ACN	262176
Time
Date	199312
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dpa
State Reference	IL
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dpa
Operator	general aviation : personal
Make Model Name	PA-23 Apache (& Geronimo Apache)
Operating Under FAR Part	Part 91
Flight Phase	descent other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument
Experience	flight time total : 1300
ASRS Report	262176
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : private
Events
Anomaly	aircraft equipment problem : less severe non adherence other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Passenger door popped open when copilot bumped handle -- caused rather severe consternation among passenger -- airplane difficult to control because of increased drag. Would suggest that copilot remember to push down locking mechanism.

Original NASA ASRS Text

Title: CABIN DOOR POPPED OPEN IN FLT.

Narrative: PAX DOOR POPPED OPEN WHEN COPLT BUMPED HANDLE -- CAUSED RATHER SEVERE CONSTERNATION AMONG PAX -- AIRPLANE DIFFICULT TO CTL BECAUSE OF INCREASED DRAG. WOULD SUGGEST THAT COPLT REMEMBER TO PUSH DOWN LOCKING MECHANISM.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.