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Thread: 12 rib wing vs 13 rib wing---- crossover point ?

  1. #1

    Join Date
    Feb 2021
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    Default 12 rib wing vs 13 rib wing---- crossover point ?

    I was looking at a pa-22 project thats in parts---- its a pa-22-150 1955 .
    the current owner said it has 12 rib wings (what I need )
    My impression was that the crossover point was when they went from o-290d to o-320-----
    but I think I remember there were slight changes in the fuselage shape too.......

    This is serial number 22-2773 1955 22-150. should it have a 12 or 13 rib wing ?

    (I suspect it may be a collection of parts from several different planes gathered by previous owners---)

    Can someone refresh me how to figure that out ?

    Thanks
    Tim

  2. #2
    Administrator Steve Pierce's Avatar
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    Default Re: 12 rib wing vs 13 rib wing---- crossover point ?

    From memory I believe you are correct. Look at your illustrated parts catalog and it will tell you what serial numbers certain parts changed.

  3. #3

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    Default 12 rib wing vs 13 rib wing---- crossover point ?

    22-2378, 22-2425 and up are PA-22-150 or PA-22-160 they all had the 13 rib wing allowing the higher Vne.


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