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R Fan Rotor Blades - Local Distortions Figure 606/TASK 72-23-00-991-326- 12 (SHEET 1)
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R Fan Rotor Blades - Local Distortions Figure 606/TASK 72-23-00-991-326- 22 (SHEET 2)
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B. Nicks, dents and scratches on contour surfaces of root area, Area A and Area C.
C. Nicks, dents and scratches on leading and trailing edges of root area, Area A and Area C.
D. Nicks, dents and scratches on contour surfaces of areas B and D
E. Nicks, dents and scratches on leading and trailing edges in areas B and D
F. Localized distortion on leading and No limited quantity if no deeper than 0.003 in.
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(0.08 mm) after removal of high metal
No limited quantity if not deeper than 0.006 in. (0.15 mm)
No limited quantity if not deeper than 0.015 in. (0.38 mm), with 0.40 in. (10.16 mm) max length for scratches after removal of high metal
No limited quantity in AREA D if not deeper than 0.04 in. (1.02 mm), and/or no limitedquantity in area B if not deeper than 0.03 in.
(0.76 mm), with 0.40 in.
(10.16 mm) max length for scratches after removal of high metal
Not serviceable.
(Ref. Fig. 605/TASK 72-23-00-991-325)
Replace blade (Ref. TASK72-21-00-000-007) and(Ref. TASK 72-21-00-400-007) or blend the defects(Ref. TASK 72-21-00-320-003) if damage is within the blending limit of figure (Ref. Fig. 605/TASK 72-23-00-991-325)
Do blending procedure(Ref. TASK 72-21-00-320-003)
Do blending procedure(Ref. TASK 72-21-00-320-003)
Do blending procedure(Ref. TASK 72-21-00-320-003)
Replace blade (Ref. TASK72-21-00-000-007) and(Ref. TASK 72-21-00-400-
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trailing edges of root area, Areas A and C
G. Leading and trailing edges, distortion in Areas B and D
H. Blade tip for:
(1) Leading-edge tip curl
Two areas may be distorted not deeper than 0.34 in. (8.64 mm) out of contour provided there are no sharp corners and the minimum length L is six times the depth of the distortion
Tip curl must not extend more than dimension X1 =
0.5 in. (12.7 mm) across
the blade tip and not
more than dimension X =
0.5 in. (12.7 mm) along
the leading edge.
Maximum deflection from
original contour is
dimension Y = 0.25 in.
(6.35 mm) .
A maximum of 6 blades
can have tip curl up to
dimension X1 = 1.3 in.
(33.02 mm) across the
blade tip and dimension
X = 2 in. (50.8 mm)
along the leading edge
with maximum deflection
from original contour
dimension Y = 0.6 in.
(15.24 mm) . No more
than 3 blades to these
increased limits can be
adjacent. In all cases,
deflection tip angle
must not be more than 60
007).
Do a spot fluorescentpenetrant inspection(Ref. TASK 70-51-00-230-002)
Replace pair of blades(Ref. TASK 72-21-00-300-002).
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degree from original airfoil.
(2) Trailing-edge tip curl. Tip curl must not extend more than dimension Z1 = 0.5 in. (12.7 mm) across the blade tip and not more than dimension Z = Replace pair of blades ifnot in the limits(Ref. TASK 72-21-00-300-002)
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