NOTE : The depth of a defect such as a nick is measured along the axis of
____
the damage unless otherwise noted.
(1) Stages 1-4 radial cracks within 0.30 in. (7.6 mm) of the leading and trailing edges more than 0.25 in. (6.4 mm) but less than 0.40 in.
(10.2 mm) in length.
(2) Stages 1-4 chord-wise cracks more than 0.20 in. (5.1 mm) but less than 0.30 in. (7.6 mm) in length.
(3) Stages 1-4 nicks, missing material and erosion on the leading and trailing edges found in Dim. B (upper 75% of the airfoil more than 0.04 in. (1.0 mm) but less than
0.08 in. (2.0 mm).
10 cycles or 25hours
10 cycles or 25hours
10 cycles or 25hours
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(4) Stages 1-4 dents on the leading and trailing 10 cycles or 25
edges found in Dim. B (upper 75% of the hours
airfoil) more than 0.04 in. (1.0 mm) but less
than 0.08 in. (2.0 mm) in depth, or less than
0.06 in. (1.5 mm) deflection from the
original contour.
(5) Stages 1-4 nicks and tears on the leading and 10 cycles or 25
trailing edge tip corners in Dim. A more than hours
0.25 in. (6.4 mm) but less than 0.30 in. (7.6
mm) in depth.
(6) Stages 1-4 dents on the leading and trailing 10 cycles or 25
edge tip corners in Dim. A more than 0.04 in. hours
(1.0 mm) but less than 0.08 in. (2.0 mm) in
depth or less than 0.06 in. (1.5 mm)
deflection from the original contour.
(7) Stages 1-4 missing material and erosion at 10 cycles or 25
the leading and trailing edges tip corners hours
more than 0.30 in. (7.6 mm) but less than
0.08 in. (2.0 mm).
(8) Stages 1-4 nicks, dents and missing material 10 cycles or 25
on the leading and trailing edges of the hours
lower 25% of the airfoil (but not the root
radius) more than 0.03 in. (0.76 mm) but less
than 0.08 in. (2.0 mm).
(9) Stages 5-9 radial cracks that are no more 10 cycles or 25
than 0.20 in. (5.1 mm) from the leading or hours
trailing edge and more than 0.15 in. (3.8 mm)
but less than 0.20 in. (5.1 mm) in length.
(10) Stages 5-9 chord-wise cracks that are no more 10 cycles or 25
than 0.20 in. (5.1 mm) from the tip and are hours
more than 0.15 in. (3.8 mm) but less than
0.20 in. (5.1 mm) in length.
(11) Stages 5-9 nicks, tears, missing material and 10 cycles or 25
erosion on the leading and trailing edges hours
found in Dim. B that aremore than 0.04 in.
(1.0 mm) but less than 0.08 in. (2.0 mm).
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(12) Stages 5-9 dents on the leading and trailing 10 cycles or 25
edges found in Dim. B that are more than 0.04 hours
in. (1.0 mm) but less than 0.08 in. (2.0 mm)
in depth or less than 0.06 in. (1.5 mm)
deflection from the original contour.
(13) Stages 5-9 nicks and tears on the leading and 10 cycles or 25
trailing edges found in Dim. A that are more hours
than 0.15 in. (3.8 mm) but than less 0.20 in.
(5.1 mm).
(14) Stages 5-9 dents on the leading and trailing 10 cycles or 25
edges found in Dim. A that are more than 0.06 hours
in. (1.5 mm) but less than 0.10 in. (2.5 mm)
in depth or less than 0.08 in. (2.0 mm)
deflection from the original contour.
(15) Stages 5-9 missing material and erosion at 10 cycles or 25
the leading and trailing edge tip corners if hours
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