TM 1-2840-252-23-2
4-35 INSPECT FOURTH STAGE POWER TURBINE ROTOR (AVIM) (Continued)
4-35
(7) Inspect inner half non-critical area (8) as follows
(a) There shall be no more than four nicks (9) or
dents (10) in surface (11) longer than 0.094
inch or deeper than 0.015 inch.
(b) There shall be no more than two nicks (12) or
dents (13) on edges (14) longer than 0.125
inch or deeper than 0.031 inch,
(8) Inspect outer half noncritical area (15) as follows
(a) There shall be no more than four nicks (16) or
dents (17) in surface (18) longer than 0.203
inch or deeper than 0.020 inch.
(b) There shall be no more than two nicks (19) or
dents (20) on edges (2 1) longer than 0.219
inch or deeper than 0.078 inch.
(9) There shall be no nicks deeper than 0.015 inch at
tip labyrinth (22).
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