Auster J4 (oz1858)


Auster J4 (oz1858) by Howard Boys from Powakits 1947 - plan thumbnail

About this Plan

Auster J4. Free flight gas scale model.

Update 13/07/2014: Replaced this plan with a clearer version. Have kept the original scan as a supplement file for comparison.

Supplementary file notes

Original scan, before cleaning. Also an extra fuselage side elevation, with cleaner lines to show stringer placement more easily.


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  • Auster_J/4 | help
    see Wikipedia | search Outerzone

    ScaleType: This (oz1858) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.

    ScaleType is formed from the last part of the Wikipedia page address, which here is
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

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User comments

Have spent maybe 8 hours on this one, cleaning up and aligning everything, mainly because I want to be able to actually use this plan myself to build from. Spent some time nudging and spacing out all the wing ribs to have equal spacing, I hope that is indeed how they are meant to be. No doubt I will have missed something - but it is at least more usable now than before.
SteveWMD - 13/07/2014
Hi Steve, Not only are you a model builder, you give us plans to build from, you put new life into ageing plans, correct plans, and bring out old memories to build from these plans. You are the God of Plans.
GaryButton - 13/07/2014
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Download File(s):
  • Auster J4 (oz1858)
  • Plan File Filesize: 585KB Filename: Auster_J4_Powakits_54in_oz1858.pdf
  • Supplement Filesize: 1809KB Filename: Auster_J4_Powakits_54in_oz1858_original_scan.pdf
  • Supplement Filesize: 116KB Filename: Auster_J4_Powakits_54in_oz1858_side_elevation_stringers.pdf
  • help with downloads


* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.


This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.


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