TB 1-1615-351-23
Section IX. DESCRIPTION AND APPLICATION PROCEDURES FOR THE UH-1H AIRCRAFT WITH
COMPOSITE MAIN ROTOR BLADES (CMRB)
3-22. Description. This procedure provides instructions for the application of a kit which protects helicopter rotor blades
against sand erosion which may occur. The steps are arranged in sequence to permit two personnel to complete
installation on the entire UH-1H CMRB aircraft in sequence. This instruction applies to the main rotor only. If more than
two personnel are available, both blades can be done simultaneously.
a. Personnel: 2 required (MOS 67 Series).
b. Supplies and Dimensions. Refer to tables 3-26 and 3-27.
WARNING
Volatile and toxic fumes occur when using solvents, causing both a fire and health
hazard.
Provide proper ventilation and protective clothing, including eye sh ield, when using
solvents. Avoid breathing vapors and skin contact as much as possible. Wash
contacted skin with soap and water. If solvent contacts eyes, flush them with clean
water and get immediate medical help.
Consult U.S. Army Environmental Hygiene Agency (U.S. AEHA) Technical Guide
Operations 144 Guidelines for Controlling Health Hazards in Paint Operations and the
Material Safety Data Sheet (MSDS) for guidance. Use respirator protection components,
a. Remove Blades. Removing the main rotor blades makes the installation easier, but removal is not mandatory.
b. Main Rotor Tape Installation.
(1) Cleaning. Clean area shown in figure 3-40 with cheesecloth or machinery towel dampened with MEK,
isopropyl alcohol, or denatured alcohol.
(2) Layout and Mask. Layout and mask off main rotor for polyurethane tape application as shown in figure 3-40.
