TM 1-2840-252-23-2
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INSPECT THIRD STAGE POWER TURBINE ROTOR (AVIM) (Continued)
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(6) Inspect inner half non-critical area (9) as
follows:
(a) There shall be no nicks or dents (10) in
airfoil surface (11) longer than 0.078 inch or
deeper than 0.010 inch.
(b) There shall be no nicks or dents (12) in
edges (13) longer than 0.125 inch or deeper
than 0.031 inch.
(c) There shall be no pitting deeper than 0.010
inch.
(7) Inspect outer half non-critical area (14) as
follows:
(a) There shall be no nicks or dents (15) in
airfoil surface (16) longer than 0.156 inch or
deeper than 0.015 inch.
(b) There shall be no nicks or dents (17) in
edges (18) longer than 0.219 inch or deeper
than 0.078 inch.
(c) There shall be no pitting deeper than 0.010
inch.
(8) There shall be no nicks deeper than 0.015 inch
at tip labyrinth (19).
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