EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 38-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
4.4
General Standby Instrument Requirements for IFR-Capable Airplanes
The EFD1000 E5 flight display presents various indicators of attitude, altitude, airspeed,
vertical speed, rate of turn and slip skid. The existing aircraft also has these indicators. Only
the attitude indicator on the EFD1000 E5 is a primary instrument. The EFD1000 E5 displays of
airspeed, altitude, vertical speed, rate of turn and slip skid are all secondary displays and the
existing indicators remain the primary. For this reason, the existing instruments may not be
removed or relocated under this STC. The exception is that the existing turn/bank indicator
may be removed if it is replaced with a backup attitude indicator.
The existing magnetic direction indicator “whiskey compass” may not be removed during the
installation of the EFD1000 E5 system.
WARNING:
Failure to adhere to these specific instrument layout requirements and EFD1000 E5
configuration requirements and limitations will violate the STC.
4.4.1
Pneumatic Attitude (existing)
The existing attitude indicator may be removed unless it is required for autopilot or flight
director purposes. It may also be retained and used as the secondary source of attitude if
it is desired to remove the turn and slip indicator or turn coordinator.
Removal of pneumatic standby instruments and installation of electric standby
instruments is not authorized by this STC. Separate installation approval would be
required.
Changing the vacuum source of the AI is beyond the scope of the STC and must be
separately approved.
4.4.2
Electric Attitude (existing)
The existing attitude indicator may be removed unless it is required for autopilot or flight
director purposes. It may also be retained and used as the secondary source of attitude if
it is desired to remove the turn and slip indicator or turn coordinator.
The E5 contains an internal battery that maintains power for 30 minutes under all
foreseeable operating conditions. No battery backup required on the electric Attitude
indicator or turn and slip indicator or turn coordinator.
The installation of dual independent electrical systems or a standby (emergency) aircraft
battery is not authorized by this STC. Separate installation approval would be required.
4.4.3
Existing Attitude Positioning (if keeping)
The position of the existing Attitude Indicator will depend on whether the turn and slip
indicator is being retained or removed.