A DC9-50 immediately after takeoff and gear retraction diverted due to 3 red gear unsafe lights caused by an intermittent landing gear control lever switch.

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Attributes
ACN	389928
Time
Date	199712
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : lan
State Reference	MI
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob tracon : dtw
Operator	common carrier : air carrier
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	other other : other pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 16500 flight time type : 9000
ASRS Report	389928
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
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:

Departed dtw. Received gear unsafe indication (3 red lights) upon gear retraction. Departed dtw metropolitan area and proceeded to lan to troubleshoot and follow company procedures. Lowered landing gear and observed 3 green and normal gear door operations. Landed lan. No unusual experiences. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was ferried from lan to dtw gear down and maintenance found the landing gear control lever switch malfunctioning and replaced the switch.

Original NASA ASRS Text

Title: A DC9-50 IMMEDIATELY AFTER TKOF AND GEAR RETRACTION DIVERTED DUE TO 3 RED GEAR UNSAFE LIGHTS CAUSED BY AN INTERMITTENT LNDG GEAR CTL LEVER SWITCH.

Narrative: DEPARTED DTW. RECEIVED GEAR UNSAFE INDICATION (3 RED LIGHTS) UPON GEAR RETRACTION. DEPARTED DTW METRO AREA AND PROCEEDED TO LAN TO TROUBLESHOOT AND FOLLOW COMPANY PROCS. LOWERED LNDG GEAR AND OBSERVED 3 GREEN AND NORMAL GEAR DOOR OPS. LANDED LAN. NO UNUSUAL EXPERIENCES. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS FERRIED FROM LAN TO DTW GEAR DOWN AND MAINT FOUND THE LNDG GEAR CTL LEVER SWITCH MALFUNCTIONING AND REPLACED THE SWITCH.

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.