Large transport landing gear would not retract after takeoff.

Attributes
ACN	298440
Time
Date	199503
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pdx
State Reference	OR
Altitude	agl bound lower : 50 agl bound upper : 8000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : pdx tower : mlb
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude climbout : initial climbout : takeoff
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7200
ASRS Report	298440
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 5500 flight time type : 800
ASRS Report	298582
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On takeoff from pdx airport called for 'gear up' and gear failed to retract. We advised ATC that we would like to stay at 8000 ft because we had a gear problem. Our destination airport was seattle so we continued to sea with the gear down at 180 KTS at 8000 ft. We declared an emergency into sea because of our gear problem and landed without incident. All crewmembers performed their duties according to company policies and procedures in a safe and professional manner. Problem was due to maintenance installing a microswitch on the squat switch incorrectly the previous day.

Original NASA ASRS Text

Title: LGT LNDG GEAR WOULD NOT RETRACT AFTER TKOF.

Narrative: ON TKOF FROM PDX ARPT CALLED FOR 'GEAR UP' AND GEAR FAILED TO RETRACT. WE ADVISED ATC THAT WE WOULD LIKE TO STAY AT 8000 FT BECAUSE WE HAD A GEAR PROB. OUR DEST ARPT WAS SEATTLE SO WE CONTINUED TO SEA WITH THE GEAR DOWN AT 180 KTS AT 8000 FT. WE DECLARED AN EMER INTO SEA BECAUSE OF OUR GEAR PROB AND LANDED WITHOUT INCIDENT. ALL CREWMEMBERS PERFORMED THEIR DUTIES ACCORDING TO COMPANY POLICIES AND PROCS IN A SAFE AND PROFESSIONAL MANNER. PROB WAS DUE TO MAINT INSTALLING A MICROSWITCH ON THE SQUAT SWITCH INCORRECTLY THE PREVIOUS DAY.

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.