Page 201 2
nd
Edition – Rev 0
51-20
DAMAGE CLASSIFICATION AND REPAIRS – MAINTENANCE PRACTICES
1. WINDSHIELD AND CANOPY REPAIR
Replace, rather than repair extensively damaged components, whenever possible, since
even a carefully patched part is not the equal of a new section, either optically or
structurally.
At the first sign of crack development, drill a small hole with a 1/8-inch drill at the
extreme ends of the cracks as shown in figure below.
This allows to localize the cracks and to prevent further splitting by distributing the
strain over a large area.
If the cracks are small (less than 1 inch), stopping them with drilled holes will usually
suffice until replacement is made.
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