TM55-2840-251-23
3-1 LINER ASSEMBLY (AVIM) (Continued)
3-1-2 INSPECTION (Cont)
2. Acceptable Conditions Not Requiring Repair: (Cont)
d. Straight line cracks between two adjacent cooling
holes.
CAUTION
Cracks running in the same direction, such
that they could join, are not permissible,
unless they are separated by at least three
inches of sound liner.
e. A maximum of seven cracks, each crack not
exceeding one inch in length, is permissible in the liner
adjacent to the dome end.
f. Localized areas that have been heated to an
extent to buckle the liner, are considered acceptable,
provided buckling is shallow and not associated with
burning, which would reduce liner wall thickness, thus
weakening the structure.
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