EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 35-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
5.2.2 Standby Airspeed and Altimeter Positioning
In a single PFD installation the existing airspeed indicator and altimeter may remain in
their original location. However, if the original location does not satisfy the basic “T”
configuration per FAR 23.1321(d) it will be required to “LOCK” the airspeed and
altitude tape in the PFD to “ON” via the installation menu. If the airspeed indicator is
not in position (AS) and the altimeter in position (AL) of Figure 5.3 below then the
TAPES must be “LOCKED ON” so that the pilot cannot de-clutter them from the display
during flight.
WARNING: Failure to adhere to the specific instrument layout requirements and
EFD1000 configuration requirements will violate the STC.
Likewise older aircraft panel layouts that do not have the airspeed indicator to the left,
or the altimeter to the right of the attitude indicator (AI) must either relocate the
instrument(s) to these positions or set the TAPES setting to “LOCK ON” in the
installation configuration menu.
Figure 5.3 – Basic T configuration
5.2.3 Directional Gyro/ HSI
The EFD1000 Flight Display will replace the existing Directional Gyro or HSI in the
panel. Provided the existing compass system is not driving a heading input to another
device in the aircraft, it may be removed from the aircraft at the operator’s discretion.
If another device is “bootstrapped” off of the compass then it will need to be
determined whether low speed ARINC 429 heading is accepted by this device and
rewired appropriately. If the other device only accepts ARINC 407 synchro heading
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