TM 1-1520-238-23
Change 1
2-45
2.12.
CLASSIFICATION OF FUSELAGE DAMAGE AND TYPES OF REPAIR – continued
Category
Action
Limits
v. Rotor Support Mast Support Base Nicks, Scratches, or Gouges
A
Not applicable.
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B
Maximum allowable depth for all areas not
specified is 0.015 INCH; for upper and
lower flanges, and tapered ends is 0.050
INCH; for mast bolt circle is 0.005 INCH;
and for lug ends is 0.150 INCH.
Repair (TM 1-1500-204-23).
C
Exceeds B.
Replace.
w. Upper Transmission Rotor Support Struts Nicks or Scratches
A
Not applicable.
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B
Maximum depth 0.005 INCH (2 allowed
per strut).
Must be blended out. Fluorescent
penetrant inspect all blended area
(TM 55-1500-335-23).
C
Radial scratches on cylindrical section or
exceeds B.
Replace.
x. Lower Transmission Rotor Support Struts Nicks or Scratches
A
Not Applicable.
-------
B
Maximum depth on clevis surface 0.010
INCH (2 allowed per strut).
Must be blended out. Fluorescent
penetrant inspect all blended areas
(TM 55-1500-335-23).
Maximum depth on lower attachment ear
surface 0.040 INCH.
Must be blended out. Fluorescent
penetrant inspect all blended areas
(TM 55-1500-335-23).
Maximum depth at lower end of strut and
edge of attachment ear 0.080 INCH.
Must be blended out. Fluorescent
penetrant inspect all blended areas
(TM 55-1500-335-23).
C
Exceeds B.
Replace.
y. Ammunition Magazine Strut Nicks or Scratches (upper and lower attachment fittings/tubular section)
A
Not applicable.
-------
B
Maximum depth 0.010 INCH.
Must be blended out.
C
Exceeds B.
Replace.
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