There are two general types of rules that F5J contests follow in the US: formal FAI rules usually with a few local deviations, and “Lite” rules.
The easiest way to view the latest FAI rules for F5J is to download the following PDF document. It has been edited to only show the F5J ruleset.
If you want to go right to the source you can download the full set of FAI rules from the FAI CIAM Documents page at the “Sporting Code Section 4 – F5 Electric” link. That will get you a PDF file that has all F5 (electric) rulesets, including F5J.
Because ALES contesting has been the preferred electric contest format in the US, some clubs that wanted to try F5J found it easier to sell by using so-called “F5J Lite” rules. The basic idea behind lite rules is to allow a standard ALES 10 second launch window (F5J does not) and to not require all planes to land within the same 10 minute window. Lite formats also allow other relaxed rules as compared to FAI F5J. An interesting discussion on this topic is available on this RC Groups thread: ALES, F5J and F5J Lite
F5J Tutorial Outlines
Clubs and contest groups that would like to offer F5J learning sessions are welcome to use the following tutorial outlines. These were used by the Sacramento Valley Soaring Society during the 2015 season and greatly helped to orient the pilots to FAI rules and basic F5J strategy.
These documents are provided in PDF format. If you would like the .DOC originals please request them via the Contact page. Thanks.