TOMARK, s.r.o.
Airplane Maintenance Manual
Chapter 51 Standard Practices Structure
Page 156 Issue: 28.FEB 2017
NOTICE C/K stiffener K roving tend to rise up from the surface at sanding.
▶ Do not sand through up to the stiffener, especially in case of c/k
stiffener in the basic part.
▶ Use dry sanding equipment with suction from the sanding area.
▶ Use Al2O3 or equivalent (fused corundum) as sanding material.
▶ Carry out sanding and eventually apply mastic on the surface after
setting, eventually tearing of the foil (see small damage).
▶ Begin sanding by abrasive with grain size of 160 and finish by grain
size of at least 400.
Finishing
See Chapter
51-73 Repair of Paint
.
51-72-02 Major damage
▶ At such damage exchange the part – no repair shall be performed.
51-72-10 Structural Parts
▶ On these parts do not carry out other than small damages repair.
▶ In case of the other damage contact TOMARK, s.r.o. as manufacturer.
NOTICE Any damage of parts from reinforced plastics with epoxy matrix leads
to increased saturation of the matrix with humidity and subsequently
to loss of properties.
▶ Therefore carry out the repair as soon as possible after the damage
has occurred.
51-72-11 Small Damage
▶ Carry out the repairs according to instructions presented in Chapter
51-72-00 Parts of External Appearance
.
▶ Ensure not to damage the stiffeners.
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