TM 1-1520-265-23
Figure 2-20. Main Rotor Blade (Voids)
2.20.3 Primary Method. Bond Testing.
2.20.3.1 NDI Equipment and Materials. (Refer to Appendix B.)
a.
Bond Test Unit
b.
Probe, Mechanical Impedance Analysis
c.
Probe Holder
d.
Cable Assembly
e.
Test Block, metal honeycomb with skin thickness closest to that of the panel to be inspected.
f.
Test Block, Composite Defect Standard #1
g.
Teflon Tape, refer to Table 1-8
h.
Aircraft Marking Pencil, refer to Table 1-8
2.20.3.2 Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenance. A partial inspection
for cause (visual indications, sites of mechanical damage, corrosion, etc.) may be performed on all exposed surfaces of
the installed part using this procedure. If required, the main rotor blade shall be installed in accordance with applicable
technical manuals listed in Table 1-1.
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