4-55 INSPECT SECOND TURBINE DISC ASSEMBLY (AVIM)
Technical Inspection Tool Kit,
68B30 Aircraft Powerplant Inspector
Off Engine Task
1. Inspect rotor blades (1) and second turbine disc
assembly (2). There shall be no cracks.
a. Inspect blades (1).
(1) There shall be no nicks deeper than 0.015
(2) There shall be no bent or distorted blades.
(3) Tip rubs shall not be deeper than 0.010
(4) Surface oxidation is acceptable provided
there is no burning or loss of material.
b. Inspect sealing plates (3). There shall be no
loose or missing sealing plates.
c. Inspect disc face (4). Scoring shall not be
deeper than 0.010 inch. This limit does not
apply to area (5) where material has been re-
moved for balancing.
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