{Tidal Potomac Fly Rodders} Re: For you GP Guy's...

I asked around the airport the other day at work and the extension is to go into the river on the south side of the airport.  They really have no room to expand to the northwest and into roaches run.  Airplane takeoff performance and obstacle clearance on the departure end of the runway predicate the minimum runway length for air carrier operators.  There is a clearway in the departure flightpath for every runway and if an obstacle penetrates this area the runway or departure has to be changed.  I say all this just to ease the fears that gravelly point could be shut down.  They would have to move buildings to build the runway to the northwest.  

AIR CARRIER OBSTACLE

CLEARANCE REQUIREMENTS

Regulations require that large transport category turbine

powered airplanes certificated after September 30,

1958, be taken off at a weight that allows a net takeoff

flightpath (one engine inoperative) that clears all obstacles

either by a height of at least 35 feet vertically, or by at least

200 feet horizontally within the airport boundaries and by

at least 300 feet horizontally after passing the boundaries.

The takeoff flightpath is considered to begin 35 feet above

the takeoff surface at the end of the takeoff distance, and

extends to a point in the takeoff at which the airplane is

1,500 feet above the takeoff surface, or at which the

transition from the takeoff to the enroute configuration is

completed. The net takeoff flightpath is the actual takeoff

flightpath reduced at each point by 0.8 percent for twoengine

airplanes, 0.9 percent for three-engine airplanes,

and 1.0 percent for four-engine airplanes.

 They will more than likely use EMAS on the departure end of 33

http://en.wikipedia.org/wiki/Engineered_materials_arrestor_system

Wow, I must be stuck inside with all the rain instead of fishing haha

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http://www.tpfr.org
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