Citabria Drawing 7-1307 (Steel Gear)

I of course truncated it - but it says point-blank any change to the landing gear not covered in the type cert is major. So if the type cert says 6:00x6 and you want 8:50x6, you are looking at a low probability of success. Getting that Anchorage FSDO letter (a copy will do) increases your chances dramatically.

I recommend law school for mechanics.

When I filed for insurance this year, they asked if my landing gear was modified. I asked the broker if bigger tires count, and after he checked, he said that no, it didn't count as modified landing gear.

Curious if both the FAA and insurance operate on the same definitions.
 
One more nugget of info to share:

Evidently there are forms called a "Drawing Change Notice". The drawing that ACA supplies itself does not have the change on it, but DCN number AC-1511 applies to drawing number 7-1307 has the updated tire list. I'm not sure if I'm allowed to share these documents on this forum or not, considering it cost money to acquire from ACA.

Interestingly, the email I got from ACA only specified 8.50x6 4-ply, but this document allows both 4 and 6 ply of that size. It also notes that both 8.50 and 8.00 tire sizes require the installation of the spacer kit. This is specifically for steel spring gear 7ECA, 7GCAA, 7GCBC, 7KCAB, and 8KCAB models. Oleo and aluminum spring gear are different documents.

Why these documents aren't available publicly is beyond me. Difficult to ensure compliance when the things that define compliance are kept hidden.

Anyway, hope this is helpful to someone in the future! 👍
How much did it cost if you don’t mind me asking?
 
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