(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).
(4) Stages 1-4 dents 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) in depth, or less than
10 cycles or 25hours
10 cycles or 25hours
10 cycles or 25hours
10 cycles or 25hours
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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 edge 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 are more than 0.04 in.
(1.0 mm) but less than 0.08 in. (2.0 mm).
(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)
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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 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 morethan 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
the damage is more than 0.20 in. (5.1 mm) but
less than 0.30 in.
(16) Stages 5-9 curl on the end of the airfoil 10 cycles or 25
when the blade chord is radially down more hours
than 50% but less than 75% and does not
engage the stationary parts during operation.
(17) Stages 5-9 nicks, dents and missing material 10 cycles or 25
edges found in the lower 25% of the airfoil hours
(but not the root radius) more than 0.03 in.
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