EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 59-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
skin. This allows for a doubler to aircraft skin bond and mounting washer to
doubler bond.
7) Mark forward direction on doubler because pattern is not symmetrical.
8) Using the doubler as a template match drill holes in aircraft fuselage at location
determined from Section 6.9.1. Doubler must be aligned to the longitudinal axis of
the aircraft to within ±4º (see Figure 6.8).
Figure 6.12 – Masking of doubler
9) Remove burrs and break sharp edges on the aircraft skin (0.005” – 0.015”)
10) Burnish the aircraft skin on the inner surface in the area where the doubler will
mount. Apply Alodine 1201 and do not prime.
11) Mount a ground stud to the doubler for attachment of the RSM shield wire. Use an
MS24693-C52 #8-32 flathead screw and AN364-832A locknut or equivalent as
shown.
Doubler
Aircraft
Skin
Countersink
Figure 6.13– Ground Stud Mounting
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