TM 1-1520-264-23
2.27.3.3
Access. Not applicable.
Maintenance Platforms/Workstands
Use only appropriate platforms, workstands, or other approved locally procured
stands and restraint equipment when working above 10 feet on helicopter in a
nontactical environment. Otherwise, personnel injury could result from accidental
falls.
2.27.3.4
Preparation of Part. The rotor blade shall be thoroughly cleaned. Refer to Preparation of Part or Area for
NDI, paragraph 1.4.4.
2.27.3.5
NDI Equipment Settings.
a.
Refer to Radiographic (X-ray) method, paragraph 1.4.10.
b.
Typical equipment settings, inspection, and exposure data are given in Figure 2-27.
2.27.3.6
Inspection Procedure. Inspect designated areas, refer to Figure 2-27 for typical fluid entrapment and
source/film placement.
a.
Position film and desired nameplate data for exposure number 1.
b.
Position X-ray tubehead for exposure number 1.
c.
Set X-ray unit to the values given in the Radiographic Inspection Data chart for exposure number 1.
d.
Make exposure number 1.
e.
Remove exposed film.
f.
Repeat inspection procedure (steps a. through e. above) for each exposure.
g.
Process and interpret film for defects as noted in paragraph 2.27.2 and as shown in Figure 2-27.
2.27.4
Backup Method. None required.
2.27.5
System Securing. The tail rotor blade shall be cleaned as necessary. Refer to Post Cleaning and Restoration
of Part or Area After NDI, paragraph 1.4.6.1. The tail rotor blade, if off the helicopter, requires reinstallation in
accordance with the applicable technical manual listed in Table 1-1.
2-62
