TM 1-1520-265-23
NOTE
Either probe identified in paragraph 6.5.3.1 may be used depending primarily on the ease of
accessibility and user friendliness. If the probes are changed, steps 6.5.3.5 b. (1), (2), and (3)
shall be repeated each time a change is made.
6.5.3.7 Marking and Recording of Inspection Results. Mark and record inspection results as required by paragraph 1.3.
6.5.4 Backup Method. None required.
6.5.5 System Securing. The yaw pedal brake cylinder supports, if removed, require installation in accordance with the
applicable technical manuals listed in Table 1-1.
6.6 PEDAL ADJUSTER ARMS AND LINK (ET).
6.6.1 Description (Figure 6-1. Index No. 6). The pedal adjuster arms and link provide adjustment of the directional
control pedals to suit the pilot's leg length.
6.6.2 Defects. Defects may occur anywhere on the surface of the pedal adjuster arms and link. No cracks are allowed.
6.6.3 Primary Method. Eddy Current.
6.6.3.1 NDI Equipment and Materials. (Refer to Appendix B.)
a.
Eddy Current Inspection Unit
b.
Probe, straight, shielded surface, 100 KHz-500 KHz
c.
Probe, right angle, shielded surface, 100 KHz-500 KHz, 90° 1/2 inch drop
d.
Cable Assembly
e.
Reference Block, three-notched aluminum (0.008, 0.020, 0.040 EDM notches)
f.
Teflon Tape, refer to Table 1-8
g.
Aircraft Marking Pencil, refer to Table 1-8
6.6.3.2 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 this procedure. If required, the pedal adjuster arms and link shall be removed in accordance with
the applicable technical manuals listed in Table 1-1.
6.6.3.3 Access. Access to the pedal adjuster arms and link is from the cockpit area.
6.6.3.4 Preparation of Part. The part shall be thoroughly cleaned. Refer to Preparation of Part or Area for NDI,
paragraph 1.4.4.
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