HIRSS EXHAUST EXTENDER (PT)

Figure 5-13. HIRSS and Nacelle Fairing Support M ounts

Figure 5-14. Suppressor Core and Baff le

TM-1-1520-265-23 H-60 Helicopter Series Manual
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TM 1-1520-265-23 5-24 Change 2 5.14.3.2 Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenance and the suppressor removed and disassembled in accordance with the applicable technical manuals listed 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 Fluorescent Penetrant 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 as required by paragraph 1.3. 5.14.4 Backup Method. None required. 5.14.5 System Securing. Clean the inspected areas to remove inspection media. Refer to Post Cleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The suppressor requires assembly and installation in accordance with the applicable technical manuals listed in Table 1-1. 5.15 HIRSS EXHAUST EXTENDER (PT). 5.15.1 Description (Figure 5-1, Index No. 15). The exhaust extender is attached to the aft end of the HIRSS and directs the exhaust away from the helicopter. This procedure is applicable to the attach angles, support beams, and struts. 5.15.2 Defects. Defects can occur anywhere on the described items. No cracks are allowed. 5.15.3 Primary Method. Fluorescent Penetrant. 5.15.3.1 NDI Equipment and Materials. (Refer to Appendix B.) Inspection equipment is listed in Table 1-7. AMS 2644 level 3 penetrant materials shall be selected from the approved list in Table 1-8. Parts requiring flourescent penetrant inspection shall be cleaned prior to inspection with n--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) rinse or 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 maintenance and the exhaust extender removed in accordance with the applicable technical manuals listed in Table 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 Fluorescent Penetrant 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 as required by paragraph 1.3. 5.15.4 Backup Method. None required. 5.15.5 System Securing. Clean the inspected parts to remove inspection media. Refer to Post Cleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The exhaust extender requires installation in accordance with the applicable technical manuals listed in Table 1-1.

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