TM 1-1520-265-235.22.2Defects. This inspection is to verify cracks found by visual inspection and to ensure no cracks arepresent after repairs.5.22.3Primary Method. Fluorescent Penetrant.5.22.3.1NDI Equipment and Materials. (Refer to Appendix B.) Inspection equipment is listed in Table 1-7. MIL-1-25135 level 3 penetrant materials shall be selected from the approved list in Table 1-8.5.22.3.2Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenance. A partialinspection for cause (visual indications, sites of mechanical damage, corrosion, etc.) may be performed on all exposedsurfaces of the installed part using this procedure. If required, the engine shall be removed in accordance with theapplicable technical manuals listed in Table 1-1.5.22.3.3Access. Access is through engine cowl (Figure 1-4, Items 3T-7 or 4T-8).5.22.3.4Preparation of Part. Refer to Preparation of Part or Area for NDI, paragraph 1.4.4.5.22.3.5Inspection Procedure. Perform fluorescent penetrant inspection. Refer to Fluorescent PenetrantMethod, paragraph 1.4.7 and Table 1-5. Inspect area of concern. See Figure 5-22.5.22.3.6Marking and Recording of Inspection Results. Mark and record the inspection results as required byparagraph 1.3.5.22.4Backup Method. None required.5.22.5System Securing. Clean the inspected area to remove inspection media. Refer to Post Cleaning andRestoration of Part or Area After NDI, paragraph 1.4.16. The engine, if removed, requires installation in accordance withthe applicable technical manuals listed in Table 1-1.Figure 5-22. Engine Components5-37/(5-38 blank)
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