Beechcraft Baron G58 Pilot Operating Handbook page 377

Model G58
3. An AFCS System Status Field is displayed above and to
the left of the attitude indicator and is used to annunciate
the status of the preflight self-test, failures of the AFCS,
and failures of the electric pitch trim system. Upon initial
system power-up and verification of required sensor
inputs, the autopilot, flight director, and pitch trim sys-
tems undergo a preflight self-test as follows. When the
AHRS system is aligned, the red [AFCS] in the system
status field extinguishes and is replaced with a white
[PFT] indicating that the AFCS Preflight Test is in prog-
ress. At the end of a successful self-test, the white [PFT]
extinguishes and the autopilot disconnect tone sounds.
Successful completion of the preflight test is required for
the autopilot, flight director and pitch trim systems to be
operational. If the Preflight Test fails, a red [PFT] is dis-
played in the system status field. If a failure occurs after
the preflight test has been successfully passed, a red
[AFCS] will be displayed in the field. If a failure of the
electric pitch trim system occurs, a red [PTRM] will be
displayed in the field.
4. OVERSPEED PROTECTION [MAXSPD] - If the indi-
cated airspeed or the airspeed trend vector reaches
approximately 210 KIAS, the flight director will enter the
overspeed protection mode and increase the airplane
pitch to slow the airplane down. When the overspeed
protection is activated, a flashing yellow [MAXSPD] will
be displayed at the top of the airspeed display. Once the
airspeed has been reduced to approximately 205 KIAS
the overspeed protection will be cancelled. If the flight
director pitch reference (PIT or VS) has not been cor-
rected, the flight director will resume its original pitch set-
ting and another overspeed will likely occur.
May, 2015
Section 7
Systems Description
7-77