Figure 2-22. Main Rotor Hub Brackets
Marking and Recording of Inspection Results. Mark and record the inspection results as required by
Demagnetization. With the switch remaining in the AC position, place the probe/yoke legs in the same
position used for magnetizing. Press the test switch and withdraw the probe/yoke from the part for a distance of two feet
before releasing the switch.
Backup Method. None required.
System Securing. Clean the main rotor hub brackets thoroughly to remove all residual magnetic particle media.
Refer to Post Cleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The main rotor hub brackets require
installation in accordance with the applicable technical manuals listed in Table 1-1.
MAIN ROTOR HUB LOWER PLATE (MT).
Description (Figure 2-1. Index No. 23). The main rotor hub lower plate provides the attachment point for the main
rotor strap packs.
Defects. This inspection is used to verify crack indications found visually on the main rotor hub lower plate. No
cracks are allowed.
Primary Method. Magnetic Particle.
NDI Equipment and Materials. (Refer to Appendix B.)
Magnetic Particle Inspection Probe/Yoke
Fluorescent Magnetic Particles, refer to Table 1-8