TM 1-1520-238-23
2-462
2.129.
CLASSIFICATION OF NACELLE 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).
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
B
Greater than 6.00 INCHES but less than
40 percent of panel area.
Replace if possibility of danger to crew or
helicopter exists.
Greater than 40 percent of panel area.
Replace panel.
h. Kevlar/Epoxy Fairings Debonding
B
Rebond where ribs, gussets, baffles,
stiffeners, seals, and doubler shave
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).
END OF TASK
