18.104.22.168 NDI Equipment Settings.
Make the following initial settings on the Eddy Current Inspection Unit, NORTEC-19eII
- 200 KHz
Refer to Eddy Current Method, paragraph 1.4.11. Set up on test block as follows:
Null probe on test block.
Adjust phase as required to obtain horizontal lift-off.
Move probe over all three notches in test block. Adjust gain to obtain a three block vertical signal when
probe is passed over 0.040-inch notch in test block. (See the standard instrument display shown in Figure 1-7.)
22.214.171.124 Inspection Procedure. Refer to Eddy Current Method, paragraph 1.4.11 and Figure 3-18.
Figure 3-18. Main Rotor Mast Support Base