A B727 landing door would not close after takeoff retraction. Flight crew returned and landed.

Attributes
ACN	290949
Time
Date	199411
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	agl bound lower : 200 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dtw
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 12000 flight time type : 3500
ASRS Report	290949
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Took off from dtw. When gear raised, right gear door did not close. We lowered gear normally. Had 3 green lights. We then raised gear (2ND time) and both gear doors did not close. We lowered gear normally, radioed company maintenance and returned to dtw. Note: both prior to takeoff and after landing, so noticed significant amount of slush and snow in wheel wells. Possible malfunction of micro switches.

Original NASA ASRS Text

Title: A B727 LNDG DOOR WOULD NOT CLOSE AFTER TKOF RETRACTION. FLC RETURNED AND LANDED.

Narrative: TOOK OFF FROM DTW. WHEN GEAR RAISED, R GEAR DOOR DID NOT CLOSE. WE LOWERED GEAR NORMALLY. HAD 3 GREEN LIGHTS. WE THEN RAISED GEAR (2ND TIME) AND BOTH GEAR DOORS DID NOT CLOSE. WE LOWERED GEAR NORMALLY, RADIOED COMPANY MAINT AND RETURNED TO DTW. NOTE: BOTH PRIOR TO TKOF AND AFTER LNDG, SO NOTICED SIGNIFICANT AMOUNT OF SLUSH AND SNOW IN WHEEL WELLS. POSSIBLE MALFUNCTION OF MICRO SWITCHES.

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.