Available downloads: Click on the link to down load


the basic checklists we use when flying in our aircraft, which are referenced in the Wonderful Adversity series of books and our various presentations and lectures

AN bolt identifier

During the build (or maintenance), many folks struggle to identify their AN Bolts… so to make it a bit easier, we have a downloadable self-print chart which you can download by clicking the image below.  When you print it out choose ‘actual size’ and/or un-check ‘fit to page’ (fitting to page will make it wrong!!!).  Then check the 1″, 2″ and 3″ lines.  If they are not exactly those dimensions you can adjust using a %age zoom on a photocopier to get it right.If you place the bolt on the line (as shown) you will be able to read the LENGTH of the bolt in 1/8″ of an inch. Note 8/8″ is 1″, so that is read as 10.  Then 1 and 1/8″ is 11, etc.  For the diameter, you can measure in 1/16″ of an inch – or offer to the circles.  Then the codes for holes are as follows.  If there is an ‘H’ then there is a HOLE in the head of the bolt.  If there is an A then then then the hole in the shank is ABSENT.  So, an AN3-5A is 3/16″ diameter, 5/8″ long without a hole in the head or shank.  A AN3-H-5A is the same bolt but with a hole in the head (for wire locking) and a AN3-5 is the same bolt but without a hole in the head and with a hole in the shank (for a castle nut).