i have seen it done often. i would like to run 26" mains and my 8.50 on the nose. how are you getting approval to do this? not worth it?

X2

Alaska bush wheels should have the info you need

clintsaunders112 wrote:i have seen it done often. i would like to run 26" mains and my 8.50 on the nose. how are you getting approval to do this? not worth it?

Define what YOU mean when you say "26" mains". Are you describing 26 inch Bushwheels or 26 inch Goodyears?

World of difference.

MTV

Clint & Jack,

See 337 below for field approval of Goodyear 26's on a 182.

https://backcountrypilot.org/images/kb/ ... N8622T.pdf

I did this mod and ran them for a year or so. Loved em. My plane went to annual that next year at a new shop and for whatever reason there was a problem with my 337. The FSDO got involved and basically said that the original mechanic didn't get proper approval, and that he wasn't going to approve them, so they had to come off. Jack, I think you or a friend ended up with those tires!

So I'm back on 8.50s/8.00s now. It sucked in the moment but was a great learning experience for me.
If you can get them approved, it was a great in between setup. Those tires wore really well on asphalt.

Mark Y. wrote:Alaska bush wheels should have the info you need

X2. I'm doing this on a 56 right now. Airglas fork with an 8.50 and 26ABWs on the mains. All STCd.

sorry, I was asking about goodyear 26's.

thanks for all the info!

clintsaunders112 wrote:sorry, I was asking about goodyear 26's.

thanks for all the info!

Those will require some sort of "approval": field approval or brave mechanic. You might also call Airglass, the folks who make the nose fork and hold that STC. They've actually amended that STC once, at the request of a number of folks.....to allow 8.50s on mains and 8.00 nose. Worth a call....they might give you a letter, or ???

MTV

Thanks MTV, that’s a good idea.

Nushi wrote:....See 337 below for field approval of Goodyear 26's on a 182.

https://backcountrypilot.org/images/kb/ ... N8622T.pdf

I did this mod and ran them for a year or so. Loved em. My plane went to annual that next year at a new shop and for whatever reason there was a problem with my 337. The FSDO got involved and basically said that the original mechanic didn't get proper approval, and that he wasn't going to approve them, so they had to come off......

What a bullshit deal!
That 337 appears to be completely legit, signed off by an FAA inspector,
and complete with the BS 2-page ICA that seems to be the new norm.
I don't understand how a different inspector should be able to later un-approve it.

I've got an FA for 26" GY's on mine, it's very similar to the one linked above--
including the long, elaborate, & IMHO unnecessary ICA.

BTW I talked to a guy who put a set of 26" GY's on his 180,
logged as some sort of a field approval (or maybe even a "minor alteration")
based on the Bushwheels STC for their 26" tires.
Dunno how much scrutiny doing this as a minor could stand though.

Nushi, thanks for info including PM. Your old GY26s went on friends SC; his second set after 6+ yrs- probably averaged 50 hrs/yr; mostly paved. Great wearing tires but are stiff sidewalls. In 3 weeks when back home I'll install my new Desser 8.50x6 4 Ply Aero Classic Smooth Tundra Tube Type. Been advised they could puncture with sticks; I'll carry extra tubes with a tire pump. THEN, I'll research any/all 26s.
Thanks again for your info and the fair deal on your old GY26s.
Jack

hotrod180 wrote:

Nushi wrote:....See 337 below for field approval of Goodyear 26's on a 182.

https://backcountrypilot.org/images/kb/ ... N8622T.pdf

I did this mod and ran them for a year or so. Loved em. My plane went to annual that next year at a new shop and for whatever reason there was a problem with my 337. The FSDO got involved and basically said that the original mechanic didn't get proper approval, and that he wasn't going to approve them, so they had to come off......

What a bullshit deal!
That 337 appears to be completely legit, signed off by an FAA inspector,
and complete with the BS 2-page ICA that seems to be the new norm.
I don't understand how a different inspector should be able to later un-approve it.

I've got an FA for 26" GY's on mine, it's very similar to the one linked above--
including the long, elaborate, & IMHO unnecessary ICA.

BTW I talked to a guy who put a set of 26" GY's on his 180,
logged as some sort of a field approval (or maybe even a "minor alteration")
based on the Bushwheels STC for their 26" tires.
Dunno how much scrutiny doing this as a minor could stand though.

So little clarity here. The 337 above came from the guy I bought the Airglas setup from. He told me he got a 337 on the GY's so I paid the FAA to get the 337 info for his old N number. I later found out he piggybacked his 337 from a guy in Anchorage. I called and ordered the 337 CD for that N number too.

So, I provided my old mechanic two approved 337's as precedent to take to my regional FSDO. From what I can gather as someone who is very unfamiliar with the way the 337 paperwork is received and approved, was that my guy sent the 337 in but it was never signed off and I ran the setup for a year unknowingly. After a bit more work out of that original shop in the following 12 months, I realized they weren't the shop for me and started to look elsewhere.

Anyway, next annual comes around and the plane goes to a different shop. The IA starts digging through the paperwork on the mod and basically communicated to me it was sent in but never signed off by the FSDO. Does this sound correct? I'll be the first to admit I don't know how the process works....

Ah, "the rest of the story".... that all makes more sense now.
Your 337 application disappeared into the bottomless maw of the FSDO,
probably never to be heard of again without a bunch of follow-up calls & emails....
and maybe even in spite of follow-ups.
At least that's the way it works here in Seattle.
It took 11 months to get my FA for 26" GY's actually signed off.
Considering how many skywagons are running around with these tires installed,
the feds sure make getting the approval unnecessarily complicated.
It'd really be nice if someone got a multiple-use STC and sold it for a flat Fee of $260 or whatever,
like Svenn's Aviation does for Pacers.