A Fight in Afghanistan



The problem with high altitude flight for Chinook is explained in this drawing.


             The drawing above serves to explain some of the problems with high altitudes and temperatures when piloting any aircraft, particular the effects exhibited on the CH-47 Chinook.


             Density Altitude (DA) is a function of altitude and temperature. Both Pressure Altitude (PA), or height above mean sea level (MSL), and the outside [free] air temperature (OAT or FAT) are used to calculate the amount of power the engines will produce at any given time. The amount of power available will directly determine the load that the aircraft can carry, and it's total gross weight for the conditions.


          DA = PA + T


             Pilots, after receiving a weather forecast for the mission, consult the aircraft technical manual (TM), Chapter 7, to compute the expected performance of the helicopter during the flight.



             Click-N-Go Here to view a cleaner, prettier, and printable version of the drawing at the top of the page. (PDF format [1.3 Mb]).



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          Related Sites


Listen to a great Taliban song (MP3, 2.0 Mb.)
[But you will have to be patient with the huge file download]


          A CH-47D Chinook crash in Afghanistan.


          Pilot Reports from Afghanistan


          Osama Humor


          Chinook Model Comparison


          E Model Specifications


          Iraq 2003



          The CH-47 - 40 years old and still circling the world.


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