A C210 on takeoff climb at 300 ft had the window deice plate depart the aircraft.

Attributes
ACN	452919
Time
Date	199910
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mwc.airport
State Reference	WI
Altitude	agl single value : 300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mwc.tower tracon : d10.tracon
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Experience	flight time last 90 days : 69 flight time total : 1060 flight time type : 69
ASRS Report	452919
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

During climb out from takeoff on 'fly runway heading' before contacting departure, T210 window deice plate departed aircraft and fell to ground. At this time I do not know if it was found or caused damage or injury. It is heavy and could be quite a hazard. This is the first time I had ever affixed this unit to the aircraft. The plate is original equipment on this 1977 210 which I bought this summer. I do not know if the product was defective, or if it had ever actually been used in-flight before. I believe I set the locking pins securely. I believe this might have been prevented by a more thorough pre purchase check of the accessory (it was checked for operation and worked) or a more thorough review of the attachment procedure, and a more thorough check of its security prior to flight.

Original NASA ASRS Text

Title: A C210 ON TKOF CLB AT 300 FT HAD THE WINDOW DEICE PLATE DEPART THE ACFT.

Narrative: DURING CLBOUT FROM TKOF ON 'FLY RWY HDG' BEFORE CONTACTING DEP, T210 WINDOW DEICE PLATE DEPARTED ACFT AND FELL TO GND. AT THIS TIME I DO NOT KNOW IF IT WAS FOUND OR CAUSED DAMAGE OR INJURY. IT IS HVY AND COULD BE QUITE A HAZARD. THIS IS THE FIRST TIME I HAD EVER AFFIXED THIS UNIT TO THE ACFT. THE PLATE IS ORIGINAL EQUIP ON THIS 1977 210 WHICH I BOUGHT THIS SUMMER. I DO NOT KNOW IF THE PRODUCT WAS DEFECTIVE, OR IF IT HAD EVER ACTUALLY BEEN USED INFLT BEFORE. I BELIEVE I SET THE LOCKING PINS SECURELY. I BELIEVE THIS MIGHT HAVE BEEN PREVENTED BY A MORE THOROUGH PRE PURCHASE CHK OF THE ACCESSORY (IT WAS CHKED FOR OP AND WORKED) OR A MORE THOROUGH REVIEW OF THE ATTACHMENT PROC, AND A MORE THOROUGH CHK OF ITS SECURITY PRIOR TO FLT.

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.