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Nose scissor disconnect
My IA indicates he would need a field approval to make such a substitution. Has anyone done this that would be willing to share the 337?
Thanks,
Michael
- Michael Bryant
- Posts: 81
- Joined: Sun Oct 16, 2011 7:59 pm
Re: Nose scissor disconnect
The problem with that modification is that you still need a couple of wrenches to undue it or snug it up. I would only do it if someone else was routinely moving my aircraft with a power tug that didn't pick up the nose. I am not going to break it with my hand tug.
Kristin Winter- ICS member
- Posts: 1299
- Joined: Tue Aug 09, 2005 5:21 pm
- Location: Northern California
Re: Nose scissor disconnect
Thanks.
The recommendation was not to disconnect every time you parked the plane, but to disconnect anytime you were leaving the plane overnight at an unfamiliar airport. If you were to either have the aircraft hangered or tied down outside, there is a possibility the aircraft could be towed by an FBO unfamiliar with the Comanche's limited turning range. With the disconnect, you need not worry.
As the very old forum topic advised (IIRC it was from 2002), you do open a can of worms. Is a 337 required? Can the owner/pilot legally disconnect/reconnect the scissors or is an A&P required?
Just trying to consider the options and see if there was a more recent view.
Michael
- Michael Bryant
- Posts: 81
- Joined: Sun Oct 16, 2011 7:59 pm
Re: Nose scissor disconnect
Kristin Winter- ICS member
- Posts: 1299
- Joined: Tue Aug 09, 2005 5:21 pm
- Location: Northern California
Re: Nose scissor disconnect
- Michael Bryant
- Posts: 81
- Joined: Sun Oct 16, 2011 7:59 pm
Re: Nose scissor disconnect
I can send you pics later but... Kristin I am not sure what you mean regarding using wrenches. My nose scissor as it came from the factory has a castle nut and cotter pin. The nut is finger tight and then locked with the pin. If you wrench it tight it won't move freely as it is supposed to. I'm probably misunderstanding your point. All I did is replace the cotter pin with a removable lock pin that makes it easy to take off, and then un-thread the nut to disconnect. I do agree that I only do this when leaving the plane at an FBO. The "take a picture" point is a good idea but I'd rather avoid damage in any event, especially after I spent $25K and 5 grueling months of my time overhauling my landing gear!
Talk to Cliff Wilewski at Herritage Aero. He supplied me with the scissor disconnect set-up. I'll take a pic and post it later.
- Charles
Charles Schefer- Posts: 563
- Joined: Mon Mar 12, 2012 7:09 pm
Re: Nose scissor disconnect
In the kit Cliff Wilewski provides, he includes extra bolts, washers, nuts, and also a little bracket that slots into the two factory towbar holes for the lower link to rest on when disconnected. I don't actually use that part, instead I have a set of bungies that work well with a bright yellow "Remove Before Flight" streamer.
- Charles
Charles Schefer- Posts: 563
- Joined: Mon Mar 12, 2012 7:09 pm
Re: Nose scissor disconnect
Interesting - thanks for posting. Our 1970 PA39 did not come that way.
Oh - stunningly clean - don't you ever fly it? or do you carry q-tips and clean it when you land - just teasing - I'm envious. I'd like 22G to be that clean but don't have the patience.
Patricia Jayne (Pat) Keefer ICS 08899
PA-39 #10 Texas
N3322G- ICS member
- Posts: 1911
- Joined: Thu May 08, 2008 1:58 pm
- Location: Fort Worth, Texas area
Re: Nose scissor disconnect
I'd be interested to see what the hardware was on your PA-39. As I said, for my 68 PA-30"B" this is stock other than the removable pin instead of the cotter pin.
- Charles