A. Piece missing: Maximum number 20 blades Refer to maximum up to 0.25 in. (6.5 mm) serviceable limits axial, 0.73 in. (18.5 (Ref. TASK 72-00-00-200-mm) radial on all 025) airfoil surfaces, except top/bottom 0.4 in. (10 mm).
B. Broken vane: Not serviceable Replace stage 1 booster vane (Ref. TASK 72-21-00-000-008) and (Ref. TASK 72-21-00-400-008)
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Inspection of Fan Disk
Figure 608/TASK 72-21-00-991-317
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Fan Blades Spacer Figure 609/TASK 72-21-00-991-318
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INTENTIONALLY BLANK
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R R Stage 1 Booster Vane Damage Limits Figure 610/TASK 72-21-00-991-319- 12 (SHEET 1)
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R R Stage 1 Booster Vane Damage Limits Figure 610/TASK 72-21-00-991-319- 22 (SHEET 2)
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C. Disengagement from inner shroud:
D. Cracks and tears:
R
R R R R R R R E. Distortion of trailing edge and leading edge:
F. Nicks, dents, scratches for areas A and B:
R G. Nicks, dents, scratches for area "C":
R R R R H. Nicks, dents, scratches on leading edge and trailing edge
J. Deposits and erosion:
K. Cracked inner shroud
F EEFF : ALL E E ECES Not serviceable
In area C, any number, less than 0.25 in. (6.5 mm) radial less than
0.08 in. (2 mm) axial.
Any number, if the length L is not more than 0.709 in. (18 mm) and the maximum dimension X along the chord width is not more than 0.256 in. (6.5 mm)
Any number, less than
0.09 in. (2.29 mm) in diameter protrusion.
Any number, less than
0.197 in. (5 mm) in diameter protrusion acceptable, not through
Maximum axial length less than 0.08 in. (2 mm) in diameter protrusion acceptable, not thru.
Any amount.
Not serviceable.
『E EEEReplace stage 1 boostervane (Ref. TASK 72-21-00-000-008) and (Ref. TASK 72-21-00-400-008)
Refer to maximumserviceable limits(Ref. TASK 72-00-00-200-025)
Refer to maximum serviceable limits (Ref. TASK 72-00-00-200-025)
Refer to maximumserviceable limits(Ref. TASK 72-00-00-200-025)
Refer to maximumserviceable limits(Ref. TASK 72-00-00-200-025)
Refer to maximum serviceable limits (Ref. TASK 72-00-00-200-025)
Refer to maximumserviceable limits (Ref. TASK 72-00-00-200-025)
Refer to maximumserviceable limits (Ref. TASK 72-00-00-200-025).
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L. Erosion/flaking of abradable lining on outer shroud
2. Fan disk for: (Ref. Fig. 608/TASK 72-21-00-991-317)
A. Cracks
B. Wear on dovetail slot pressure faces.
C. Nicks and
scratches.
3. Fan blade spacer for: (Ref. Fig. 609/TASK 72-21-00-991-318)
A. Cracks
B. Fretting,
corrosion
5. Close-up
________
Subtask 72-21-00-420-077
Any amount.
Not serviceable.
No limit, if less than See limit extensions
50 percent of area is (Ref. TASK 72-00-00-200-
damaged. If the maximum 025)
affected surface, even
only on one side of one
slot, is greater than or
equal to 50%, any amount
if less than 0.152 mm
(0.0059 in.) deep.
No limited quantity, if See limit extensions
not deeper than 0.01 in. (Ref. TASK 72-00-00-200-
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