E190 pilot reports cockpit opening on takeoff. He believes that this may be a recurring problem.

Attributes
ACN	820935
Time
Date	200901
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 190/195 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Takeoff
Flight Plan	IFR
Component
Aircraft Component	Cockpit Door
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Engineer Flight Crew Commercial Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 22000 Flight Crew Type 400
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural Published Material / Policy

Narrative:

Cockpit door was verified closed both by cockpit indication and by physically pushing on door to verify it was latched. During takeoff roll; door unlatched. Once airborne; a flight attendant closed door and we re-verified that the door was locked. This seems to happen both on the E170 and E190 aircraft; possibly as a result of the aircraft flexing during takeoff.callback conversation with reporter revealed the following information: reporter advises; as he understands it; the fault is the failure of the latch to remain engaged as the nose lifts off the ground during rotation; perhaps the result of fuselage flex. His comments about the E170 sharing the problem are comments from other crewmembers who have flown that model. Reporter has not flown the E170 personally.

Original NASA ASRS Text

Title: E190 pilot reports cockpit opening on takeoff. He believes that this may be a recurring problem.

Narrative: Cockpit door was verified closed both by cockpit indication and by physically pushing on door to verify it was latched. During takeoff roll; door unlatched. Once airborne; a flight attendant closed door and we re-verified that the door was locked. This seems to happen both on the E170 and E190 aircraft; possibly as a result of the aircraft flexing during takeoff.Callback conversation with reporter revealed the following information: Reporter advises; as he understands it; the fault is the failure of the latch to remain engaged as the nose lifts off the ground during rotation; perhaps the result of fuselage flex. His comments about the E170 sharing the problem are comments from other crewmembers who have flown that model. Reporter has not flown the E170 personally.

Data retrieved from NASA's ASRS site as of April 2012 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.