Commuter has upper half of door pop open in-flight.

Attributes
ACN	252553
Time
Date	199309
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bos
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 240 flight time total : 2500 flight time type : 240
ASRS Report	252553
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I was PIC on flight, service from mvy to bos. At approximately XA25 pm, the top half of the passenger door popped open. Our position was approximately 15 DME sse of boston at an altitude of 2500 ft. The WX was VFR. I reviewed the emergency checklist and slowed the aircraft to 120 KIAS. I then requested priority with boston approach with who I was working prior to the door opening. I then briefed hya operations and proceeded to brief the 8 passenger on board. We landed uneventfully at boston. The aircraft was written up, squawked for the door and later returned to service.

Original NASA ASRS Text

Title: COMMUTER HAS UPPER HALF OF DOOR POP OPEN INFLT.

Narrative: I WAS PIC ON FLT, SVC FROM MVY TO BOS. AT APPROX XA25 PM, THE TOP HALF OF THE PAX DOOR POPPED OPEN. OUR POS WAS APPROX 15 DME SSE OF BOSTON AT AN ALT OF 2500 FT. THE WX WAS VFR. I REVIEWED THE EMER CHKLIST AND SLOWED THE ACFT TO 120 KIAS. I THEN REQUESTED PRIORITY WITH BOSTON APCH WITH WHO I WAS WORKING PRIOR TO THE DOOR OPENING. I THEN BRIEFED HYA OPS AND PROCEEDED TO BRIEF THE 8 PAX ON BOARD. WE LANDED UNEVENTFULLY AT BOSTON. THE ACFT WAS WRITTEN UP, SQUAWKED FOR THE DOOR AND LATER RETURNED TO SVC.

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.