An MD82, after takeoff, the flight diverted due to unable to raise the gear handle and failure of the aircraft to pressurize. Ground sensing problem.

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Attributes
ACN	616806
Time
Date	200405
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lga.airport
State Reference	NY
Altitude	msl bound lower : 3000 msl bound upper : 5000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	616806
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : press system gear handle other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport flight crew : landed as precaution flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Maintenance Human Performance Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

After takeoff, the gear handle could not be raised and the aircraft did not pressurize. Requested vectors for possible return. Given box pattern at 3000 ft, then 5000 ft to work the problem. Determined the air/ground sensor had probably malfunctioned. Burned fuel down to below maximum landing weight and returned to lga for normal landing.

Original NASA ASRS Text

Title: AN MD82, AFTER TKOF, THE FLT DIVERTED DUE TO UNABLE TO RAISE THE GEAR HANDLE AND FAILURE OF THE ACFT TO PRESSURIZE. GND SENSING PROB.

Narrative: AFTER TKOF, THE GEAR HANDLE COULD NOT BE RAISED AND THE ACFT DID NOT PRESSURIZE. REQUESTED VECTORS FOR POSSIBLE RETURN. GIVEN BOX PATTERN AT 3000 FT, THEN 5000 FT TO WORK THE PROB. DETERMINED THE AIR/GND SENSOR HAD PROBABLY MALFUNCTIONED. BURNED FUEL DOWN TO BELOW MAX LNDG WT AND RETURNED TO LGA FOR NORMAL LNDG.

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.