Narrative:

The L1 door was closed properly by agent as per SOP and [it] looked [like] the door was closed and seemed to lock properly. The aircraft was dispatched and on takeoff the door partially opened and there was a need to air return due to heavy noise and air coming into the cabin from outside. When the aircraft returned and was on gate; tech ops met aircraft and discovered the door not flush.

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Original NASA ASRS Text

Title: Air carrier Gate Agent reported the flight returned after takeoff where it was discovered the passenger entry door was partially open.

Narrative: The L1 door was closed properly by agent as per SOP and [it] looked [like] the door was closed and seemed to lock properly. The aircraft was dispatched and on takeoff the door partially opened and there was a need to air return due to heavy noise and air coming into the cabin from outside. When the aircraft returned and was on gate; tech ops met aircraft and discovered the door not flush.

Data retrieved from NASA's ASRS site 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.