TM 1-1520-238-23
2-426
Change 8
2.117.
CLASSIFICATION OF WING DAMAGE AND TYPES OF REPAIR – continued
Category
Action
Limits
e. Kevlar/Epoxy Skin Cracks, Tears, or Punctures
B
Cracks or tears: less than 25 percent
length of shortest skin dimension.
Repair (para 2.30).
B
Punctures: less than 2.00 INCHES from
supporting structure.
Repair (para 2.30).
C
Exceeds B or hinders normal operation or
function.
Replace.
f. Kevlar/Epoxy Skin Delamination
B
No deeper than three plies or 0.050 INCH,
whichever is less. (Treat limit exceeding
damages as crack, tear, or puncture
repair.)
Repair (para 2.30).
g. Kevlar/Epoxy Skin Debonding
C
Greater than 6.00 INCHES but less than
40 percent of panel area.
Replace if possibility of danger to crew or
helicopter exists.
C
Greater than 40 percent of panel area.
Replace panel.
h. Kevlar/Epoxy Fairings Debonding
B
Rebond where ribs, gussets, baffles,
stiffeners, seals, and doublers have
debonded.
i. Kevlar/Epoxy Fairings Cracks
B
No longer than 25 percent of shortest skin
dimension.
Repair (para 2.30).
C
Exceeds B or extends from one end of
part through other end.
Replace.
j. Kevlar/Epoxy Fairings Erosion
B
Any broken resin or exposed fibers.
Repair (para 2.30).
k. Loose or Missing Rivets
B
Loose, missing, or working rivets not
covered in this paragraph.
Repair (para 2.30).
END OF TASK
