PPRuNe Forums - View Single Post - Helicopter down outside Leicester City Football Club
Old 1st Nov 2018, 20:40
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noooby
 
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Originally Posted by tottigol
What was TDP, anyone able to figure it out?
Anyone with CatA experience would know what I am talking about.
Max crosswind 10knots. No tail wind allowed.
TDP is up to 400ft in the Variable TDP profile. Depends on the height of the obstacle.

The calculation of TDP is: TDP=Height of Obstacle + Clearance Height from Obstacle + 80 ft. Using the graphs (poorly) and not knowing the ambient conditions/weights/exact height of obstacele etc, TDP could be around 330ft. That assumes the stadium to be around 200ft high.

If TDP calculates out to be 400ft or more then you are weight restricted.

Climb rate should be less than 300ft/min on the vertical climb. So from the video you should be able to (very roughly) estimate their height above the pitch when they looked to hit TDP and pole forward.

All approximate and not to be taken as gospel!!!
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