(c) To apply 8-inch wide tape to leading edge of main rotor blade do this: Make alignment marks on outside
of 8-inch wide tape 4.5 inches from edge as shown in Figure 3-1 (sheet 2 of 5), where leading edge will be located.
(d) Apply thin coat to area to be covered by tape using paint brush. Minimum drying time 5 minutes. Tape
must be applied a maximum of 1 hour after promoter application.
Application of all tape segments is the same.
(e) Peel fifth backing strip on 16.5-inch-long tape back 3-inches.
Make sure tape does not come in contact with adhesive promoter until tape is
(f) Beginning at station 299.0, apply tape to main rotor blade starting at leading edge and work towards
trailing edge. Work out gaps, air and strained areas under tape. Bubbles greater than 0.2 square-inch area within
2-inches of each other is not allowed.
Removal and installation of polyurethane tape is the same for all main rotor
Removal and installation of 2-inch and 8-inch polyurethane tape is the same.
(g) Apply tape to main rotor blade. Work out gaps, air, strained areas excess fluid and bubbles from under
tape. Any bubbles encountered during the application process may be removed by continuous squeegee stroking
towards the edge of tape or by puncturing the bubbles with a needle and applying pressure to the wet adhesive.