EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 202-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
Lens color must be Amber.
There must be a push-to-test function or momentary on switch so that the A/P AHRS lamp can be
tested prior to each flight. The integrated “dimmable cat’s-eye” light/switch (MS25041-4) has a
momentary lamp test and is labeled Push to Test.
The light must be dimmable for night and yet readable and discernible in sunlight and free from
glare and reflections that could interfere with the pilot's vision in all operations for which the aircraft
is certified. The light must be installed so that their direct rays, and rays reflected from the
windshield or other surface, are shielded from the pilot's eyes.
The power source for the light must come from the EA100 A/P AHRS relay.
The “A/P AHRS FAIL” label is required and must be of a text size similar to other labels in the panel
and be readable and discernible (lit) at night.
Primary Field-of-View for the purpose of this STC uses the location of the EFD as the measuring point.
The A/P AHRS FAIL light must be within the box defined in Figure E5 below. The lamp and label should
be viewable from the normal seated position with minimum head movement. Record the location of the
light on Figure 3 of Aspen Avionics document #900-00012-001, Instructions for Continued
Airworthiness.
Figure E5: A/P AHRS FAIL Annunciator Location
MIL-C-27500 shielded wire and MIL-W-22759 single conductor wire should be used. All wires should
be fabricated as shown, keeping all grounds as short as possible.
The Ethernet cable between the EA100 and the EFD1000 has a maximum cable length of 30ft. This
cable is an Aspen-supplied component.
“A/P AHRS FAIL” annunciator
must be mounted within this box
21 inches max
21 inches max
2 inches
8 inches
EFD
NOTE
Due to the above specifications it is recommended to use the “dimmable cat’s-eye” integrated
lamp/switch (MS25041-4) as it meets all the requirements above once positioned appropriately and
labeled “A/P AHRS FAIL”.
