cessna 185 jump door

[wojcio 0]

Have you ever seen roll-up door at cessna 185 ?
I'm looking for that solution for C-185.

[riggerrob 643]

Sorry, but I have never seen a roll-up door on a Cessna 185.

Whichever pattern you use, make sure you leave enough head room. Tandem Instructors will thank you when they have to kneel more than a minute.

[totter 2]

Paul Fayard designed one for his 182. It was a 337 Field Approval. No STC.
It used the same basic design as a Twin Otter/Caravan roll up door.
182, 185, 206 all have the same basic fuselage shape.
As riggerrob suggested; "Leave enough head room."
I remember the Fayard door not leaving much in the way of head room. If you had a tall pilot he/she would have to duck every time the door was opened.
If you can find out the N# of Fayard's old 182 you can order from the FAA Registration Branch in OK City all the records for that aircraft, (public records). It cost like $10 for a CD-ROM. It will have the 337 for the door. Once you have that you have your Approved Data and your golden for your 337.

[jonstark 8]

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It will have the 337 for the door. Once you have that you have your Approved Data and your golden for your 337.

Not so (in the USA). The data there can be considered acceptable data but is not approved for use in any other a/c than the one it was approved for in the first place. Take a copy to your FSDO for their consideration but don't cut metal or spend money till you have their concurrence. In today's world they'll probably send you to the MIDO for a one time STC. Not the end of the world just a few more hoops to jump through. Easier yet is to have a DER or Designated Engineering Rep put his stamp on the data. The DER stamp makes it approved data so doesn't need "field" approval by the feds. You are looking at $1000 there before the door mod even gets started.

Wojcio,
I wonder how the Polish authorities would be about accepting this FAA form 337 as approved data in your country. If presented well with supporting drawings and the history of one already operating it can't hurt to try.

jon

[totter 2]

You are correct. Improper wording on my part.

It is approved for the specific application (aircraft) being modified, it is acceptable for others to use for a similiar application (modification).

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In today's world they'll probably send you to the MIDO for a one time STC

Not that it makes a difference to the OP, I didn't notice until you mentioned Poland, but the request for an STC would go to the ACO first.

If you stick to the Guide lines in the Field Inspector's handbook, there's a chart that shows you when you need just a 337; DER/DAR info; or an STC. If you have Acceptable Data they can't turn you down. What do you think AC43.13 is? Its ACCEPTABLE DATA written by the FAA.
If you submit it without any Approved/Acceptable Data then, YES, your sending it to the ACO.

You need to come up to Alaska. We've had about two dozen 337 Field Approvals in the last year on our Part 135 aircraft.

[davelepka 4]

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Have you ever seen roll-up door at cessna 185 ?
I'm looking for that solution for C-185.

Any reason not to go with a top hinge arrangement on the standard metal door? Just like the majority of 182 jump planes?

I've got at least 1000 jumps split between a pair of 185s, both with a top-hinged metal door. Never had any problems, and never noticed much difference any time I jumped a 182. Probably the simplest, easist and most secure way to go.