BEECHCRAFT
SectlonX
Safety Information
MINIMUM CONTROL SPEED AIRBORNE (Vmca)
Vrnca
is
designated by the red radial
on
the airspeed
indicator and indicates the minimum control speed,
airborne at sea level. Vmca is determined by FAA
regulations as the minimum airspeed at which
it
is
possible to recover directional control
of
the airplane
within
20 degrees heading change, and thereafter
maintain straight flight, with not more than
5 degrees
of
bank if one engine fails suddenly with:
- Take-off power on both engines,
- Rearmost allowable center
of
gravity,
-
Flaps in takeoff position,
- Landing gear retracted,
-
Propeller windmilling in takeoff pitch
configuration
(or
feath~:red
if
automatically
featherable).
However, sudden engine
failures rarely
occur
with
all
of
the factors listed above, and therefore, the
actual Vmca under any particular situation may
be a
fülle slower than the red radial
on
the airspeed
March, 1981
1()-41
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