TM 55-1520-240-23-4
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REPAIR BLADE SPAR ROOT END MINOR DAMAGE
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INITIAL SETUP
Applicable Configurations:
All
Tools:
Airframe Repairers Tool Kit, NSN 5180-00-323-4876
Trip Balance, NSN 6670-00-401-7195
Shot Bag
Heat Lamp
Materials:
Abrasive Paper (E7 and E9)
Gloves (E186)
Cloth (E120)
Acetone (E20)
Adhesive (E40 or E41)
Polyethylene Cup (E157)
Wood Spatula (E424)
Peel Ply (E270)
Teflon-Impregnated Fabric (E170)
Tape (E388)
Silicone Rubber (E318)
Temperature Indicating Strips (E413)
Personnel Required:
Aircraft Structural Repairer
Inspector
Equipment Condition:
Off Helicopter Task
1.
Prepare damaged area (1) of spar (2) as follows:
a.
Remove damaged fiberglass. Use file. Do
not exceed depth of damage. Taper edges
10 times depth of damage.
b.
Check damaged area. Damaged area shall
not exceed four plies (0.072 inch) in depth.
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