TM 1-1520-264-23
Figure 4-16. Wing Attachment fittings on Wing and Fuselage
4.17
WING RACK ATTACHMENT POINTS/MOUNTS (ET).
4.17.1
Description (Figure 4-1. Index No. 17).
The wing rack attachment points/mounts provide a means and place
to attach the pylons, fuel tanks, and ordinance to the wings.
4.17.2
Defects. This inspection is used to verify crack indications found visually on the wing rack attachment
points/mounts. Pay particular attention to the areas around the yoke or clevis to include the hollow pin mounting area.
No cracks are allowed.
4.17.3
Primary Method. Eddy Current.
4.17.3.1
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, and 0.040 EDM notches)
f.
Teflon Tape, refer to Table 1-8
g.
Aircraft Marking Pencil, refer to Table 1-8
4-41
