TM 1-1520-265-23Figure 2-11. Spindle Horn2.11.3.7 Marking and Recording of Inspection Results. Mark and record inspection results as required by paragraph 1.3.2.11.4 BackupMethod. Fluorescent Penetrant, refer to paragraph 1.4.7.2.11.5 SystemSecuring. The spindle horn, if removed, requires installation in accordance with the applicable technicalmanuals listed in Table 1-1.2.12 DROOP STOP CAM (ET).2.12.1 Description(Figure2-1.IndexNo.1). The droop stop cam is the contact point between the main rotor spindleand main rotor hubs which limit the droop of the blades when the rotor head is slowing or stopped.2.12.2 Defects. This inspection is used to verify crack indications found visually on the droop stop cam. No cracks areallowed.2.12.3 PrimaryMethod. Eddy Current.2.12.3.1 NDI Equipment and Materials. (Refer to Appendix B.)a.Eddy Current Inspection Unitb.Probe, straight, shielded surface, 100 KHz-500 KHzc.Probe, right angle, shielded surface, 100 KHz-500 KHz, 90° 1/2 inch dropd.Cable Assembly2-23
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