2.10 BALANCE WEIGHT BRACKET (MT).
Description (Figure 2-1. Index NO. 10). There are two balance weight brackets attached to each of the
four spindles. The brackets provide the means of attaching the balance weights for balancing the rotor head assembly.
Defects. Defects may occur anywhere on the surface of the balance weight bracket. 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
Consumable Materials, refer to Table 1-8
Aircraft Marking Pencil, refer to Table 1-8
Hand-held magnetic coil may be used. Refer to paragraph 220.127.116.11.2 and Figure 1-6.
Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenance. A partial
inspection for cause (visual indications, sites of mechanical damage, corrosion, etc.) may be performed on all exposed
surfaces of the installed part using applicable positions of this procedure. If required, the balance weight bracket shall be
removed in accordance with the applicable technical manuals listed in Table 1-1.
Access. Access to the balance weight bracket is from the UR engine cowl (Figure 1-4, Items 3T-7 and 4T-
Preparation of Part. The part shall be thoroughly cleaned. Refer to Preparation of Part or Area for NDI,
NDI Equipment Settings . Refer to Magnetic Particle Method, paragraph 1.4.8.
Inspection Procedure. A magnetic field shall be applied to the part perpendicular to the orientation of
possible cracks. Positions required for this inspection are illustrated in Figure 2-10.