Pilot's Guide

Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi 190-00663-03 Rev. A 531
ADDITIONAL FEATURES
8.7 ELECTRONIC STABILITY AND PROTECTION (ESP
™
)
NOTE : Refer to the Airplane Flight Manual to determine approval of ESP functionality.
The optional Garmin Electronic Stability and Protection (ESP
™
) system is available only when the GFC 700
AFCS is installed. This system is designed to provide automatic control inputs to discourage aircraft operation
outside a normal flight envelope. Garmin ESP
™
works to maintain the desired pitch, roll, and airspeed operating
envelope by automatically engaging one or more servos when the aircraft is near a defined pitch, roll, and/
or airspeed operating limit. While ESP
™
utilizes the same sensors, processors, and actuators as the GFC 700
autopilot, it is a separate function. The ESP
™
system only operates when the GFC 700 autopilot is not engaged
and the aircraft is above 200 feet AGL.
ESP
™
engages when the aircraft exceeds one or more conditions (pitch, roll, and airspeed) beyond the normal
flight parameters. Enhanced stability for each condition is provided by applying a force to the appropriate control
surface to return the aircraft to the normal flight envelope. This is perceived by the pilot as resistance to control
movement in the undesired direction when the aircraft approaches a steep attitude or high airspeed.
As the aircraft deviates further from the normal attitude and/or airspeed range, the force increases (up to an
established maximum) to encourage control movement in the direction necessary to return to the normal attitude
and/or airspeed range. Except in the case of high airspeed, when maximum force is reached, force remains constant
up to the maximum engagement limit. Above the maximum engagement limit, forces are no longer applied. There
is no maximum engagement related to a high airspeed condition.
When ESP
™
has been engaged for more than ten seconds (cumulative; not necessarily consecutive seconds) of a
20-second interval, the autopilot is automatically engaged with the flight director in Level Mode, bringing the aircraft
into level flight. An aural “Engaging Autopilot” alert is played and the flight director mode annunciation will indicate
‘LVL’ for vertical and lateral modes.
The pilot can interrupt ESP
™
by pressing and holding the Autopilot Disconnect (AP DISC) switch or the Control
Wheel Steering (CWS) button. Upon releasing AP DISC or CWS, ESP
™
force will again be applied, provided aircraft
roll attitude is within engagement limits. ESP
™
can also be overridden by overpowering the servo’s mechanical
torque limit.
ESP
™
can be enabled or disabled on the AUX-SYSTEM SETUP 2 Page on the MFD.
To enable or disable ESP
™
:
1) Turn the large FMS Knob to select the AUX Page Group.
2) Turn the small FMS Knob to select the System Setup Page.
3) If necessary, press the SETUP 2 Softkey to display the AUX-SYSTEM SETUP 2 Page. If the AUX-SYSTEM SETUP 2
is already displayed, proceed to step 4.
4) Press the FMS Knob to activate the cursor.
5) Turn the large FMS Knob to place the cursor in the STABILITY & PROTECTION field.
6) Turn the small FMS Knob to select ‘ENABLE’ or ‘DISABLE’.
7) Press the FMS Knob to remove the cursor.
ESP
™
is automatically enabled on system power up.