To quote wiki
An unusual feature was the fixed
undercarriage. Although fixed, the undercarriage was fitted with a retractable
fairing. This feature was intended to familiarize student pilots with an undercarriage retraction mechanism but without causing external damage by a forgetful student.
The several times I saw Forts being restored were in the late 60s at a farm in Saskatchewan Canada. I was impressed by the size (small) and workmanship but did not pay any attention to the cockpit.
It would be interesting to find if any manuals or pilot notes survived. None are listed in Worldcat.