A horizontal airfoil at the tail of an aircraft.The glider was fitted with an A.I.R. horizontal stabilizer....
Flight 631 had just taken off from Reno, Nevada en route to Seattle when it was forced to return to Reno after the pilot reported a problem with the horizontal stabilizer on the tail of the aircraft.
Modifications to accommodate the horizontal stabilizer and the tail wheel have already been made to the aft fuselage.