TM 1-1520-265-235-24 Change 25.14.3.2 Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenanceand the suppressor removed and disassembled in accordance with the applicable technical manualslisted in Table 1-1.5.14.3.3 Access. Not applicable.5.14.3.4 Preparation of Part. Refer to Preparation of Part or Area for NDI, paragraph 1.4.4.5.14.3.5 Inspection Procedure. Perform fluorescent penetrant inspection. Refer to FluorescentPenetrant Method, paragraph 1.4.7 and Table 1-5. Inspect area of concern. See Figure 5-14.5.14.3.6 Marking and Recording of Inspection Results. Mark and record inspection results asrequired by paragraph 1.3.5.14.4 BackupMethod. None required.5.14.5 SystemSecuring. Clean the inspected areas to remove inspection media. Refer to PostCleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The suppressor requiresassembly and installation in accordance with the applicable technical manuals listed in Table 1-1.5.15 HIRSS EXHAUST EXTENDER (PT).5.15.1 Description(Figure5-1,IndexNo.15). The exhaust extender is attached to the aft end ofthe HIRSS and directs the exhaust away from the helicopter. This procedure is applicable to theattach angles, support beams, and struts.5.15.2 Defects. Defects can occur anywhere on the described items. No cracks are allowed.5.15.3 PrimaryMethod. Fluorescent Penetrant.5.15.3.1 NDI Equipment and Materials. (Refer to Appendix B.) Inspection equipment is listed inTable 1-7. AMS 2644 level 3 penetrant materials shall be selected from the approved list in Table1-8. Parts requiring flourescent penetrant inspection shall be cleaned prior to inspection withn--Propyl Bromide (vapor degreasing only)(Table 1--8), DS--108 (Table 1--8), Electron (Table 1--8),Positron (Table 1--8). DS--108, Electron, Positron must be followed by an acetone (Table 1--8) rinseor wipe: or drying until there is no visible solvent residue left on parts.5.15.3.2 Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenanceand the exhaust extender removed in accordance with the applicable technical manuals listed inTable 1-1.5.15.3.3 Access. Not applicable.5.15.3.4 Preparation of Part. Refer to Preparation of Part or Area for NDI, paragraph 1.4.4.5.15.3.5 Inspection Procedure. Perform fluorescent penetrant inspection. Refer to FluorescentPenetrant Method, paragraph 1.4.7 and Table 1-5. Inspect area of concern. See Figure 5-15.5.15.3.6 Marking and Recording of Inspection Results. Mark and record inspection results asrequired by paragraph 1.3.5.15.4 BackupMethod. None required.5.15.5 SystemSecuring. Clean the inspected parts to remove inspection media. Refer to PostCleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The exhaust extender requiresinstallation in accordance with the applicable technical manuals listed in Table 1-1.
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