Page 62.21A Chapter 62 Main Rotor APR 2019
FIGURE 62-13 SPAR DAMAGE
FIGURE 62-14 ROOT FITTING DAMAGE
62-43 Spar Damage
1. Refer to Figure 62-13. Spar damage limits exclude leading edge cap. Verify damage
does not exceed the following limits:
a. 0.020 inch maximum depth between RS 70.00 and RS 198.00.
b. Replace blade if erosion has reduced thickness at spar leading edge to 0.040 inch.
c. Replace blade if erosion has cause ripples in or deformation to spar leading edge.
2. Refer to § 62-50 for repair procedures for damage within limits. Blend out spar
damage with a minimum 1.0 inch blend radius.
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