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tow hook limitation question



 
 
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  #1  
Old February 4th 07, 06:49 PM posted to rec.aviation.soaring
Marc Ramsey
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Posts: 207
Default tow hook limitation question

Jim Vincent wrote:
Kevin, do you have any known examples of this happening? Flying off the
winch is very similar to a glider high scenario, yet I've never had a
problem releasing even under tension.


There have been a number of accidents apparently caused by Schweizer
hooks jamming on the tow plane when the glider gets too high. However,
most everyone has applied an approved fix from years ago, turn the
release assembly upside down and the jamming problem goes away...

Marc
  #2  
Old February 4th 07, 07:01 PM posted to rec.aviation.soaring
Marc Ramsey
external usenet poster
 
Posts: 207
Default tow hook limitation question

Marc Ramsey wrote:
Jim Vincent wrote:
Kevin, do you have any known examples of this happening? Flying off
the winch is very similar to a glider high scenario, yet I've never
had a problem releasing even under tension.


There have been a number of accidents apparently caused by Schweizer
hooks jamming on the tow plane when the glider gets too high. However,
most everyone has applied an approved fix from years ago, turn the
release assembly upside down and the jamming problem goes away...


Here's a 337 for a Pawnee:

http://home.att.net/~jdburch/Form337.htm

Marc
  #3  
Old February 4th 07, 07:03 PM posted to rec.aviation.soaring
Marc Ramsey
external usenet poster
 
Posts: 207
Default tow hook limitation question

Marc Ramsey wrote:
Marc Ramsey wrote:
Jim Vincent wrote:
Kevin, do you have any known examples of this happening? Flying off
the winch is very similar to a glider high scenario, yet I've never
had a problem releasing even under tension.


There have been a number of accidents apparently caused by Schweizer
hooks jamming on the tow plane when the glider gets too high.
However, most everyone has applied an approved fix from years ago,
turn the release assembly upside down and the jamming problem goes
away...


Here's a 337 for a Pawnee:

http://home.att.net/~jdburch/Form337.htm


And an article:

http://home.att.net/~jdburch/towhook.htm

Marc
 




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