Hartzell HC-E3YR-7 Owner's Manual page 198

LOOKING AT
LEADING EDGE
LEADING EDGE
To determine amount of repair needed, use the following formula:
On the leading and trailing edge of the blade, measure the depth of the damage,
and multiply this number x 10 (see Example 2, above). Repair the area surrounding
the damage 10 times the depth of the damage.
On the face and camber of the blade, measure the depth of the damage, and
multiply this number x 20 (see Example 3, above). Repair the area surrounding the
damage 20 times the depth of the damage.
MAINTENANCE PRACTICES
Propeller Owner's Manual
Example 1
Example 2
2 / " = D x 10
1
2
/ " deep
1
4
LOCAL
REPAIR
Repair Limitations
Figure 6-4
136
Example 3
2 / " = D x 20
1
2
/ " deep
1
8
LOCAL
REPAIR
61-00-36
APS6157
Page 6-14
Rev. 2 Feb/17