EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 68-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
6.9.6
RSM Mounting on Non-Metal or Damage-Tolerant Design Aircraft
Approval for the structural aspects of mounting the RSM to a composite or fabric skinned
aircraft, including consideration for the direct effects of lightning, is beyond the scope of
the EFD1000 E5 AML STC. Separate FAA approval for structural and lightning direct
effects considerations is required before mounting the RSM on these aircraft types.
The installation information for the RSM in this manual is satisfactory to meet the
requirements for the direct effects of lightning for all metal aircraft.
It is not possible to determine the lightning direct effects on equipment mounted
internally in composite and fabric aircraft. Therefore, the only acceptable areas for RSM
internal mounting are shown in Figure 6-12. The same bonding requirements for an
external mounting must be adhered to.
Though separate approval must be obtained for the RSM structural and, in the case of
fabric and composite aircraft, lightning direct effects; installation of the remaining
EFD1000 E5 system components is approved under the EFD1000 E5 AML-STC. This
includes HIRF and lightning induced transient susceptibility approval of the EFD1000 E5
system installation (i.e. display, RSM, CM, ACU, and associated wiring).
6.9.7
RSM Mounting Angles
For RSM mounting the following maximum mounting angles apply.
NOTE: For aircraft operating in the latitudes above 55N or in the southern fourth of Australia it is
recommended that the RSM mounting angles be at 5 degrees or less.
6.9.7.1
Longitudinal Axis
Figure 6-14: RSM Top View longitudinal Alignment
6.9.7.2
Pitch Axis
Maximum fore and aft tilt is in relation to the aircraft waterline. An aluminum shim
might be required to keep orientation within limits (see Section 6.9.11 for shim
fabrication).
Parallel line to
aircraft center line
4º
4º
FWD
+/- 4º Max Alignment error
from aircraft centerline