<< >> NASA ASRS Report 872056, February 2010

After takeoff a BE400's door unlock light illuminated. The handle was observed out of the locked position so the crew returned to land without declaring an emergency.

Attributes
ACN	872056
Time
Date	201002
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	Beechjet 400
Operating Under FAR Part	Part 121
Flight Phase	Climb Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Exterior Pax/Crew Door
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

Shortly after liftoff; both pilots heard air/wind noise behind the cockpit. This is not terribly unusual; as the coffeepot area often emits these types of sounds on occasion during climbout; so we continued the climb. Passing through 4000 feet; the door unlock light was noticed on the master caution panel. Non-flying pilot looked back at the main cabin door and observed that the handle was raised slightly above the horizontal/closed-and-locked position. We alerted ATC of our intention to return to the departure field; but did not declare an emergency. Approach and landing were uneventful. Door unlock light was not on prior to takeoff.

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Original NASA ASRS Text

Title: After takeoff a BE400's DOOR UNLOCK light illuminated. The handle was observed out of the locked position so the crew returned to land without declaring an emergency.

Narrative: Shortly after liftoff; both pilots heard air/wind noise behind the cockpit. This is not terribly unusual; as the coffeepot area often emits these types of sounds on occasion during climbout; so we continued the climb. Passing through 4000 feet; the DOOR UNLOCK light was noticed on the master caution panel. Non-flying pilot looked back at the main cabin door and observed that the handle was raised slightly above the horizontal/closed-and-locked position. We alerted ATC of our intention to return to the departure field; but did not declare an emergency. Approach and landing were uneventful. Door unlock light was NOT on prior to takeoff.

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.