And my browser shows a date at the bottom of each page which is 5 months and 12 days prior to the accident.
That's simply the date corresponding to the latest version of the proforma, nothing to do with the contents.
Here's another example with exactly the same footer:
http://www.caa.co.za/Accidents%20and...ports/9315.pdf
The PDF containing the BA report is datestamped 19 June 2015.