1510 W. Drake Drive, Tempe, Arizona USA 85283
Paint Cracking on UH-1 Tail Rotor Blades
VHA Solutions
Van Horn Aviation has taken the following steps to solve these issues:
- We re-engineered the UH-1 tail rotor blades with rounded doublers rather than the straight lines of the square doublers. We received FAA approval for the major change and began manufacturing the new blades in October 2017 under the part number 2042200-103. The new doubler plies may resolve the issue. Note that although the -101 and -103 blades are exactly the same except for the shape of the doublers, they are not interchangeable. For balance, an installed set of blades must be both -101s or -103s.
- We switched to a new type of nanoparticle paint in 2020 that is more flexible and should prevent paint cracking along ply seams. Operators with -101 blades can opt to repaint their blades with the new nano paint.
