nuts. Drive each rivet successively as a screw and nut is taken out,
and remove any excess sealing compound.
FLUSH ACCESS DOOR
Sometimes installing flush access doors is permitted as the easiest
and most efficient way to repair internal structures or certain skin
Notice in Figure 2-6 that the installation consists of a
doubler and a stressed-access cover plate.
Nut plates, in a single
row, are riveted to the doubler; and the doubler is then riveted to
the skin with two rows of rivets, staggered, as shown in Figure 2-6.
The cover plate is attached to the nut plates on the doubler with
machine screws to permit easy plate removal.
Flush Access Door Installation.
Damage to an aircraft's skin is sometimes so extensive that an
entire panel must be replaced. Also, a section or area of skin
may have such a number of patches or minor repairs that a panel
may have to be replaced. In either case, the first step, as
in all other repairs, is to thoroughly inspect the damaged
area to determine the full extent of the damage. This includes