EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 53-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
The lower portion of the bracket is provisioned with screw slots, allowing variable vertical
spacing configurations.
If the lower cutout is a 3ATI or other larger standard cutout, a commercially available
metal blanking plate should be used to flush fill the cutout. Use the EFD Mounting
Bracket as a template to cut the 2.10” diameter cutout for the fan and two 0.150”
diameter mounting holes. All cut edges should be treated to prevent corrosion.
Aircraft with tilted instrument panels of 20º or less can install the EFD flat against the
panel. The tilt will later be removed electronically in the system configuration using the
Panel Tilt Pitch Adjustment.
The EFD is attached to the instrument panel in 6 places with MS24693-S30 (#6-32
flathead screws), NAS1149FN632P (washers), and MS21044N06 (#6-32 Nuts). It is also
acceptable to use existing #6 nutplates.
1)
Burnish the back of the instrument panel around one of the 6 mounting holes to allow
for bracket to instrument panel bonding through the screw/washer/nut.
2)
Burnish the front side of the instrument panel in 4 locations that line up with the
copper EMI fingers of the bracket.
3)
Loosely install the bracket with the upper two mounting screws/nuts/washers as
shown in the figure.
4)
Use an inclinometer on the top of the EFD bracket with the aircraft level to make this
adjustment. It may be necessary to slot the existing holes to align the bracket in the
roll axis.
5)
The EFD must be mounted within 0.0±2.0º of the zero degree roll “wings level” axis.
6)
Fabricate an 8” bonding strap from braid and two ground lugs. Attach one ground lug
to a mounting screw on the backside of the panel (see Figure 6-10).
7)
Install remaining EFD mounting bracket screws and nuts.
8)
Tighten all six (6) mounting screws and nuts to 12 in-lbs. anchoring the bracket to
the panel.
Figure 6-2: EFD and Bracket Installation