3-2 INNER (SMALL) EXIT DUCT, SHROUD AND VANE ASSEMBLY (AVIM) (Continued)
1. Inspect vanes as follows:
a. For loss of coating. Loss in excess of 0.300 inch
square is cause for rejection. No repair permissible.
b. For erosion of parent metal. Erosion deeper than
0.010 inch on any surface is cause for rejection. No repair
c. For cracks in trailing edge. Multiple hairline
cracks up to 0.100 inch long are permitted. In excess of
0.100 inch, vane is to be rejected. A maximum of five
cracks over 0.185 inch long are permitted, providing they
do not open up in excess of 0.020 inch and any two in
excess of 0.125 inch must be separated by at least 0.100
2. Inspect shroud segments as follows:
a. For cracks. None allowed (refer to NOTE).
On engines with four long segments
installed, two through cracks are permitted.
b. For distortion or erosion. None permitted.
c. For metal buildup. Grind off buildup (Task 3-2-4).
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