PILOT/CPG DIRECTIONAL CO NTROL PEDAL RELEASE SHAFT (MT).
Description (Figure 6-1. Index No. 34). The pilot and CPG directional control pedal release shafts connect the
pedal release handles to the directional control pedal release nuts. Each is similar in design and function.
Defects. This inspection is used to verify crack indications found visually on the pilot/CPG directional control
pedal release shaft. 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 pilot/CPG directional control pedal release
shaft shall be removed in accordance with the applicable technical manuals listed in Table 1-1.
Access. Access is through the center console panel (Figure 1-4, Item PL3).
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. The position required for this inspection is illustrated in Figure 6-34.
Select AC on the AC/DC power switch.
Place probe/yoke on part in position 1 as shown.
Press the test switch and apply a light coat of magnetic particle media at the same time.
Remove the media momentarily before removing the current. Current should be applied for
no more than five seconds.
Inspect for cracks using the black light.
Marking and Recording of Inspection Results. Mark and record the inspection results as required by