Extra 300LT, Maintenance Manual

Page: 327 / 551

CHAPTER 51
PAGE 34 PAGE DATE: 7. July 2010
MAINTENANCE MANUAL EXTRA 300LT
I M P O R T A N T Refer to "Aircraft Inspection and Repair FAA AC 43.13-
1A" and "Aircraft Alterations Acceptable Methods,
Techniques and Practices FAA AC 43.13-2A" for
structural repairs.
I M P O R T A N T Alterations or repair of the airplane must be accom-
plished by licensed
personnel. Consult EXTRA
Flugzeugproduktions- und Vertriebs- GmbH in case of
doubt about a repair not specifically mentioned there.
WLB 1.7734.4 type steel is used (steel tube measurements
are metric). Also refer to Chapter 51-30-02.
N O T E If welding work must be performed, use only the TIG
procedure (Tungsten Inert Gas). Use steel welding wire
1.7734.2 or equivalent for welding additive.
51-70-06 Painting of Composite Parts
W A R N I N G Coating materials may cause sensitization by inhala-
tion and skin contact. Hardeners and coating materials
ready for use can have an irritant and sensitizing effect
upon the skin and respiratory tracts and cause allergic
reactions.
W A R N I N G Provide for a continuous supply of fresh air during and
also after the application, do not inhale the vapours and
wear a breathing mask during the spray application of
these materials. Persons suffering from an allergy or
being prone to diseases of the respiratory tracts must
not get in contact with coating materials.
Refer to the manufacturer technical information sheet!!
After the curing cycle the surface of repared area can be
sanded with sandpaper (80 grade). Indentations are filled
with white polyester filler. Subsequently achieve a surface as
uniformly rough as possible using a finer dry sandpaper (150
or 320 grade). Prior to paint application, the surface of the
repair area must be cleaned thoroughly of all sanding dust,