_ inch (4.88 mm) in the contact edge corresponding to the contact area.
5.
Chipping and flaking is permitted without limit in
_ the overlap area. 3) There is no limit on the quantity of fretting on the forward face of the blade root if not more than 0.003 inch
(0.08 mm) in depth.
4) There is no limit on the quantity of fretting on the aft face of the blade root if not more than 0.003 inch (0.08 mm) in depth.
5) Cracks or tears on the full dovetail are not serviceable.
(b) Platform: 1) Wear of the bottom because of contact with the damper is permitted if not more than 0.006 inch (0.1 mm). 2) There is no limit on the quantity of wear of the side edges after you remove the high metal.
3) There is no limit on the quantity of nicks, dents and scratches on the top surface (does not include fillet) as follows: a) The damage is not more than 0.02 inch (0.5 mm) in
depth. b) The scratches are not more than and 0.40 inch (10.0 mm) in length. 4) Cracks or tears are not serviceable.
(c)
Fillet radius:
1) Nicks, dents, scratches, cracks, and tears are not serviceable.
(d)
Root area: 1) There is no limit on the quantity of nicks and dents on the leading edge if not more than 0.015 inch (0.4 mm) in depth.
2) There is no limit on the quantity of nicks and dents on the trailing edge if not more than 0.015 inch (0.4 mm) in depth.
3) There is no limit on the quantity of nicks, dents and scratches on the contour surface as follows: a) The damage is not more than 0.003 inch (0.08 mm) in
depth.
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b) The scratches are not more than 0.40 inch (10.0 mm) in length. 4) Cracks, tears and distortion on the full root area are not serviceable.
(e) Area A: 1) There is no limit on the quantity of nicks and dents on the leading edge if not more than 0.03 inch (0.7 mm) in depth. 2) There is no limit on the quantity of nicks and dents on the trailing edge if not more than 0.03 inch (0.7 mm) in depth.
3) There is no limit on the quantity of nicks, dents, and
scratches on the contour surface as follows:
a) The damage is not more than 0.015 inch (0.3 mm) in
depth. b) The scratches are not more than 0.40 inch (10.0 mm) in length. 4) Cracks, tears and distortion on the Area A are not serviceable.
(f) Area B: 1) There is no limit on the quantity of nicks and dents on the leading edge if not more than 0.03 inch (0.7 mm) in depth. 2) There is no limit on the quantity of nicks and dents on the trailing edge if not more than 0.03 inch (0.7 mm) in depth.
3) There is no limit on the quantity of nicks, dents, and
scratches on the contour surface as follows:
a) The damage is not more than 0.015 inch (0.3 mm) in
depth. b) The scratches are not more than 0.40 inch (10.0 mm) in
length.
4) Cracks, or tears on the Area B are not serviceable.
5) If there is distortion in Area B, the limits are as
follows:
NOTE: To find if a fan blade has distortion, compare it to
____
the other blades from the rotor.
a) No more than 0.34 inch (8.0 mm) out of contour in two locations. b) The length (D) must be more than six times the depth
(C) (Fig. 601)
c) Do a flourescent penetrant inspection of the area (AMM 70-40-01/201)
(g) Area C:
1) There is no limit on the quantity of nicks and dents on the leading edge if not more than 0.015 inch (0.3 mm) in depth.
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2) 3)
4) 5)
6) 7)
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