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Letter to the FAA



 
 
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  #191  
Old July 2nd 17, 03:45 AM posted to rec.aviation.soaring
Charlie M. (UH & 002 owner/pilot)
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Default Letter to the FAA

Read my post and T8 from 5/27.....
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  #192  
Old July 2nd 17, 02:20 PM
Walt Connelly Walt Connelly is offline
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Quote:
Originally Posted by Charlie M. (UH & 002 owner/pilot) View Post
Read my post and T8 from 5/27.....
Not sure what you are trying to say here Charlie. I've read the posts and...?
  #193  
Old July 2nd 17, 09:09 PM posted to rec.aviation.soaring
Charlie M. (UH & 002 owner/pilot)
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Default Letter to the FAA

Sounds like a 337 is involved.
I am no expert, I am only passing on info in this thread.
  #194  
Old July 2nd 17, 11:23 PM posted to rec.aviation.soaring
[email protected]
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Default Letter to the FAA

That was done in 1982. When field approvals were still being done.
  #195  
Old July 3rd 17, 02:22 PM posted to rec.aviation.soaring
John Wells
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Default Letter to the FAA

Any reason why rope-cutting guillotines (like we have in winches) aren't installed in tow planes? Regardless of the design of the hook, surely redundancy (as long as it doesn't increase the risk of an unintended release, which would potentially be more problematic on tow than on the winch).
  #196  
Old July 3rd 17, 06:32 PM posted to rec.aviation.soaring
Bruce Hoult
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Default Letter to the FAA

On Monday, July 3, 2017 at 4:22:54 PM UTC+3, John Wells wrote:
Any reason why rope-cutting guillotines (like we have in winches) aren't installed in tow planes? Regardless of the design of the hook, surely redundancy (as long as it doesn't increase the risk of an unintended release, which would potentially be more problematic on tow than on the winch).


I believe the installations with a winch to retract the tow rope after glider release also have a guillotine in lieu of a release on the tow plane end..

It might be pretty tricky to design an installation with both a release and a guillotine on the tow plane end without:

1) having the guillotine hanging way off the back of the tow plane, and mounted to what?

2) having the tow rope attachment/pull point much further forward than usual, and potentially difficult to hook up/unhook

3) being able to release the rope in flight (or while taxiing) without cutting the rope and without risk of the rings (or whatever) fouling on the guillotine.


I'm not sure why a guillotine would add any more risk. There are already plenty of ways for PTT to happen, and glider towing should always be performed in a way that makes PTT safe at any point during the takeoff.
  #197  
Old July 4th 17, 12:30 AM posted to rec.aviation.soaring
Chris Rowland[_2_]
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Default Letter to the FAA

At 13:22 03 July 2017, John Wells wrote:
Any reason why rope-cutting guillotines (like we have in winches) aren't
in=
stalled in tow planes? Regardless of the design of the hook, surely
redund=
ancy (as long as it doesn't increase the risk of an unintended release,
whi=
ch would potentially be more problematic on tow than on the winch).

Our aerotow ropes have weak links at both ends, a weak one at the glider
end and a stronger one at the tug end. Normally the glider weak
link goes but if the tug takes the rope through the hedge the the tug end
goes and no harm - except to the tug pilot's reputation.

Chris

  #198  
Old August 30th 17, 02:36 AM posted to rec.aviation.soaring
[email protected]
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Default Letter to the FAA

Walt,

Can you give an update on your letter to the FAA regarding this incident?

Regards,
Gerald
  #199  
Old August 30th 17, 04:02 PM posted to rec.aviation.soaring
[email protected]
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Default Letter to the FAA


Gosh, this has been a concern for many years.

At least one way to look at this is to consider is it a problem?

There are recorded instances of glider pilots becoming too high on the tow plane early on tow resulting in lifting the tail of the towplane driving it into the ground. Killing the tow pilot.

It is well known if you lift on the tail-installed tow release with enough force, the Schweizer tow release may not function.

The soaring community can not ignore the problem.

I remember when we installed the Tost tow release on our tow planes many years ago. We felt it best to have our installation (easy) approved by an FAA inspector. He took a simple look at the installation and approved it on the spot.

The Tost tow release is a low cost item and easy to install.
 




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