Patent ID: 8584512

Claim:
A method of inspecting recesses formed in an airfoil, said method comprising the steps of positioning the airfoil in a fixture with a first end portion of the airfoil engaging a support disposed above a base of the fixture, engaging a surface of a first recess formed in a first side of the airfoil with a surface on a first gauge head, engaging a surface of a second recess formed in a second side of the airfoil with a surface on a second gauge head, the surface on the first gauge head has a configuration which corresponds to the configuration of the surface of the first recess in the airfoil, the surface on the second gauge head has a configuration corresponding to the configuration of the surface on the second recess in the airfoil, said steps of engaging surfaces of this first and second recesses with first and second gauge heads includes engaging a second end portion of the airfoil with the first and second gauge heads, conducting fluid pressure to the first recess in the airfoil while the surface on the first gauge head is disposed in engagement with the surface on the first recess in the airfoil, conducting fluid pressure to the second recess in the airfoil while the surface on the second gauge head is disposed in engagement with the surface on the second recess in the airfoil, determining whether a rate of leakage of fluid pressure from the first recess in the airfoil is greater than or less than a predetermined rate, and determining whether a rate of leakage of fluid pressure from the second recess in the airfoil is greater than or less than a predetermined rate.