Safety Notices. 090708
E-Mail: hartungj@srt.com Web: www.poorboyaviation.com
This page is an update of safety notices when known.
Aug 18, 2004 The tail wheel springs and safety wire can wear (so check them), also the rudder/tail wheel control horn (on the bottom of the rudder) could use a heavier and longer arm. Suggested upgrade is to use a 5" long 4130 tube x 5/16" x .058 control arm on the rudder/tail control horn assembly. If the tail wheel losses its linkage you would not be in danger in the air but ground handling will become difficult. The link from the bottom of the rudder control horn to the 1/2" bobbing link steering bar needs 2 springs (one on each side and safety wire running inside the spring with 1/4" slack) because of the changing distance as the link moves but the linkage from the steering bar link down to the tail wheel horn can be heavy safety wire (.041") on each side (just transfers motion with no changing distance). I noticed a friend of mine had used a couple of spring door springs as you see in the first picture, they work well but are a bit heavy. Note that the picture has the tail folded and the elevator control arm is not hooked up. Here is a BRS parachute installed, notice that it is off center to allow the aileron control tube to pass un-obstructed.
Jan 1, 2002 A control stop should be in place on the tailpost to relieve elevator control pressure when the plane is at rest, be sure that the control stop cannot come loose and interfere with the controls during flight and does not limit the range of motion. There is more than one way to do this but there should be an at rest control stop in the elevator system to keep the system from being under load all of the time. See Dia-CO-15 Plans will change this in October 2008
