FAA Approved Airplane Flight Manual Supplement

190-00716-03 Rev. 4 Hawker Beechcraft King Air 300/300LW
Page 133 of 167
The ESP roll limit indications are not de-cluttered when the aircraft is in an extreme attitude. ESP roll
limit indications are not shown when ESP is not configured for a given installation, ESP is not available as
determined by the active GIA, or the autopilot is engaged.
Autopilot Underspeed Protection
For aircraft that have ESP installed, the AFCS is able to detect and protect against underspeed situations
while the autopilot is engaged.
When the AFCS is engaged in a non-altitude critical mode (LVL, PIT, FLC, VS, VNV) and airspeed falls
below the minimum threshold of 100 KIAS, the AFCS automatically enters minimum airspeed mode. A
MINSPD annunciation appears above the airspeed tape, and the AFCS causes the airplane to pitch down
to maintain 100 KIAS. An aural “AIRSPEED” alert will sound once when entering non-altitude critical
Underspeed Protection.
If the AFCS is engaged in an altitude critical mode ( ALT, GS, GP and GA) and the aural stall warning is
played for more than 1 second, the AFCS will maintain a wings-level roll attitude and pitch the aircraft
down at ~1kt/sec to maintain an airspeed that will cause the aural stall warning to stop playing, plus 2
KIAS. Also, an aural “AIRSPEED” alert will sound every 5 seconds.
All Underspeed Protection modes are exited automatically when there is enough aircraft performance to
follow the originally selected flight director mode and reference.
Coupled Go-Around
ESP equipped aircraft are capable of flying fully coupled go-around maneuvers. Pressing the GA button
on the left power lever does not disengage the autopilot. Instead, the AP will attempt to capture and
track the flight director command bars. If insufficient aircraft performance is available to follow the
commands, the AFCS will enter altitude-critical Underspeed Protection mode after approximately 10
seconds. GA mode is the only ESP-associated mode that can be engaged below 200’ AGL GPS
altitude.