172M - Remove Doors

172M - Remove Doors

I'm trying to find out if it is permissable to remove one or both doors for flight and what needs to be done to do it legally.  Also, it would seem appropriate to install some kind of wind deflector on the leading edge of the door opening. Does anyone make such a mod?  Thanks for your help!!

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Re: 172M - Remove Doors

I just looked thru the TCDS for the 172M and found no such allowance.  seems this would be a good question for your FSDO to answer.  They would be able to determine if there has ever been a similar situation and if approval was granted.
I personally fly a Piper and in the summer really wish I could open the window.  on the rare occasion when I can fly a cessna and open the window its a real treat but cant imagine why I would want to remove the door.

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Re: 172M - Remove Doors

It is not permissible to remove the doors for flight.  The aerodynamic characteristics of the 172 and its power to weight ratio make it chancy at best.  I have seen a 172 crash in Costa Rica from having one of its doors off.  I do not recommend it.

In the US, the Type Data Certificate and the required equipment list require that the doors be installed for flight.  Removing the doors would alter the airworthiness.  However, it may be possible to get local approval for the modification as do jump aircraft such as the C182 which is flyable with its door removed (much more power to weight).

Hope this helps.

D. M. A. (Dave) Hollaway, ASC
Caribbean FSDO

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Re: 172M - Remove Doors

I got an OK from the Detroit FSDO to remove a door on my 172M. The letter also said all occupants have to keep their seat belts on and no smoking! DUH! There is a lot of buffeting from the prop inside with the right door off, not so much with the left side open. I don't think it affects the flying or handling of the plane at all. I fly slow due to the wind noise when the door is off. Brings back memories of my ultralight.

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Re: 172M - Remove Doors

It's pretty easy to get a form to get permission to fly with one door off - I called them and got it in the mail - specific to the aircraft (172K). One door removed, --no smoking-- (that's a good  one) shallow banks (up to 15 degrees I believe) etc., and the little piece of paper you'll need to post on the panel. Its all on an 8.5 by 11 piece of paper.

If You are using it as a jump plane You'll also have to take off the door stop - they don't want anyone getting hung up on the bottom of the wing.

A little breezy but you get used to it very soon -
also gives a different perspective on landings
Ken 

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