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EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 51-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
6.5.1
EFD1000 E5 Mounting Limitations (EFD)
The EFD must be mounted within 20º nose down to -10º nose up of perpendicular to the
aircraft waterline.
The EFD must be mounted within 0.0±2.0º of the zero degree roll “wings level” axis.
6.5.2
RSM Mounting Limitations
The RSM must be mounted within ±4º to the longitudinal axis of the aircraft (see Figure
6-14)
The RSM must be mounted within ±10º to the zero degree roll “wings level” axis (see
Figure 6-17)
The RSM must be mounted within ±10º to the zero pitch axis “waterline” of the airframe
(see Figure 6-15).
RSM must be mounted to a relatively flat surface such that when installed it will not deform
the aircraft skin and must not allow more than a .030” gap between RSM and skin.
RSM must not be mounted to a NO ZONE as pictured in Figure 6-11, Figure 6-12, and
Figure 6-13.
Mounting the RSM to, or making other penetrations through, the aircraft pressure vessel is
beyond the scope of this STC. Separate FAA approval of pressure vessel penetrations
required to accommodate RSM mounting is required prior to the installation of the
remaining EFD1000 E5 system components under the EFD1000 E5 AML-STC.
Mounting the RSM to the exterior of a composite or fabric skinned aircraft structure is
beyond the scope of this STC. To mount the RSM on composite or fabric skin aircraft
structures, separate FAA approval of the RSM mounting is required prior to the installation
of the remaining EFD1000 E5 system components under the EFD1000 E5 AML-STC.
6.6
Equipment Bonding
Bond all metal components to the airframe. Prepare bonded surfaces for best contact
(resistance of connections should not exceed 0.003 ohm).
The EFD uses an installer fabricated braided bonding strap to ensure proper bonding to the
panel. The bond strap is attached with supplied screw (3/8th inch length) to the back of the
EFD at a location just below and left of static port. The other end of the strap is attached to
the EFD mounting bracket screw at the rear of the panel.
The RSM does not require an RF ground plane, but it must be bonded to the airframe to meet
compliance with DO-160E EMI and lightning certification requirements. Bonding of the RSM is
achieved through the mounting fasteners. The attached ground wire on the RSM is not a
bonding wire but is a shield ground for the pigtail over braid and must be connected to
airframe ground. Each RSM harness shield must have its own (i.e. not shared with another
RSM) bonding location.
The ACU is bonded through its six (6) mounting holes and chassis when mounted to a metal
surface, otherwise a braided or single stranded wire bonding strap to airframe ground will
need to be fabricated for mounting on composite structures.