Divert land due to ground sensing system failure.

Attributes
ACN	277651
Time
Date	199407
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : shv
State Reference	LA
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : shv
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 2000
ASRS Report	277651
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After takeoff, first officer had to use override switch to raise the gear. Takeoff WX was 100 and 1. Air/ground sensing switch had not worked. After running all procedures and talking to maintenance, we continued and climbed to FL370. Pack cooling turbo fans overheated because they were still on since aircraft thought it was on ground. They caused smoke in cabin. We ran smoke removal checklist and then diverted to dfw. Our book procedures at airline X did not cover this problem well. It did not even tell us all of the system that were affected by the air/ground sensor. I'm working with my chief pilot to correct this.

Original NASA ASRS Text

Title: DIVERT LAND DUE TO GND SENSING SYS FAILURE.

Narrative: AFTER TKOF, FO HAD TO USE OVERRIDE SWITCH TO RAISE THE GEAR. TKOF WX WAS 100 AND 1. AIR/GND SENSING SWITCH HAD NOT WORKED. AFTER RUNNING ALL PROCS AND TALKING TO MAINT, WE CONTINUED AND CLBED TO FL370. PACK COOLING TURBO FANS OVERHEATED BECAUSE THEY WERE STILL ON SINCE ACFT THOUGHT IT WAS ON GND. THEY CAUSED SMOKE IN CABIN. WE RAN SMOKE REMOVAL CHKLIST AND THEN DIVERTED TO DFW. OUR BOOK PROCS AT AIRLINE X DID NOT COVER THIS PROB WELL. IT DID NOT EVEN TELL US ALL OF THE SYS THAT WERE AFFECTED BY THE AIR/GND SENSOR. I'M WORKING WITH MY CHIEF PLT TO CORRECT THIS.

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.