<< >> NASA ASRS Report 989709, January 2012

A B737-700 main cabin door's bottom segment did not close completely which created a loud noise at the door after takeoff and the cabin would not pressurize so the flight returned for maintenance.

Attributes
ACN	989709
Time
Date	201201
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Climb
Flight Plan	IFR
Component
Aircraft Component	Exterior Pax/Crew Door
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

When the L1 door was closed there was a 1' gap visible from the outside (found by maintenance upon return). From the inside the door appeared to be fully closed and all flight deck door lights were out. After takeoff the cabin wouldn't pressurize (all air switches were in the proper position). The flight attendant called out of 5;000 ft with a loud noise coming from L1 door. We were cleared to descend to 3;000 ft. All notifications were carried out and we returned to [the departure airport].

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Original NASA ASRS Text

Title: A B737-700 main cabin door's bottom segment did not close completely which created a loud noise at the door after takeoff and the cabin would not pressurize so the flight returned for maintenance.

Narrative: When the L1 door was closed there was a 1' gap visible from the outside (found by maintenance upon return). From the inside the door appeared to be fully closed and all flight deck door lights were out. After takeoff the cabin wouldn't pressurize (all air switches were in the proper position). The Flight Attendant called out of 5;000 FT with a loud noise coming from L1 door. We were cleared to descend to 3;000 FT. All notifications were carried out and we returned to [the departure airport].

Data retrieved from NASA's ASRS site as of July 2013 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.