AOPA Pilot Magazine - August 2021 - 83

TECHNOLOGY /
Smart rudder boost
Garmin's new feature for multiengine pilots
BY DOUG ROZENDAAL
essential in a light twin. This is best done
from memory and known by many as the
" The Drill, " and one of the key steps in
that process is accurately identifying and
verifying the failed engine. Pushing on
the rudder to bring the ball back toward
center and retarding the throttle on the
suspected engine confirm which engine
has failed. This is not as easy as it sounds
and many a multiengine checkride has
resulted in a pink slip for misidentification
of the failed engine. Finding
the correct amount of rudder " bias " to
improve the engine-out flying characteristics
of the airplane without masking the
failed engine in the " identify " step is a
delicate balance.
Garmin believed aircraft with the
GFC 600 autopilot, yaw damper, and
G500 TXi or G600 TXi electronic flight
instrument system with engine information
system included all the hardware
needed to make dealing with an engine
failure easier and safer. All with little
more than a software upgrade to the
properly equipped Beechcraft BE-58,
-58A, and most of the Piper Navajo
PA-31-300 through -325CR. More models
are coming.
The rudder bias and electronic staIT
IS A LOW-IFR early morning departure
with the entire family loaded in the
Beechcraft BE-58 Baron for a weekend
getaway. Fired up and warmed up, with
the clearance copied and loaded, the
hardest part of the flight is over and all
that remains is a two-hour flight to the
lake where the weather is beautiful. The
gear comes up, the propellers come back,
and the clouds swallow the airplane into
a sea of gray.
A smile grows on your face, because
hand-flying a Baron is a joy. Your shoulders
have just relaxed when it happens: a
loud bang, the airplane yaws, and the airspeed
starts to decay.
The lives of your family depend on
what happens next. Thankfully this story
is rare, but too often it has a sad ending.
Higher-performance airplanes
have engine-out events that are more
dynamic than those of lighter airplanes.
Turboprops and jets often have rudder
boost to aid the pilot in this critical situation.
Light twins have always relied
solely on a well-trained pilot to deal with
an engine failure in flight.
GFC 600
The Garmin GFC 600 autopilot sets a new
standard for autopilots in light aircraft.
Its bundle of features called Autonomí
includes Garmin Electronic Stability and
Protection (ESP), a single-button return
to level function, flight director, emergency
descent mode, and a new feature
announced in December 2020-Smart
Rudder Bias for light multiengine airplanes.
Recently I was invited to fly
Garmin's BE-58 Baron with the Smart
Rudder Bias system installed at the company's
flight test facility in Olathe, Kansas.
Quick action and proper identification
of the failed-engine propeller is
bility systems work in concert. Stability
protection is armed all the time and
when the aircraft exceeds bank or airspeed
limits the system nudges the
airplane back into a less aggressive
attitude. It can be easily overpowered
manually. Rudder bias is armed when
the airplane exceeds its published VMC
and engaged when the EIS senses a
specified difference in engine power and
yaw in the same direction. Engagement
of the rudder bias system changes the
engagement parameters of the stability
protection, which will nudge the airplane
back toward wings level at a much
lower angle of bank (7 degrees) into the
failed engine. If the pilot gets slow stability
protection will nudge the nose down
to maintain 90 KIAS.
Lowering the nose to protect airspeed
decay is critical. Pilots today are learning
their multiengine skills in airplanes like
the Piper Seminole and the Beechcraft
Duchess. These airplanes have benign
engine-out handling and large-chord
AOPA PILOT / August 2021
83

AOPA Pilot Magazine - August 2021

Table of Contents for the Digital Edition of AOPA Pilot Magazine - August 2021

Contents
AOPA Pilot Magazine - August 2021 - Intro
AOPA Pilot Magazine - August 2021 - BB1
AOPA Pilot Magazine - August 2021 - BB2
AOPA Pilot Magazine - August 2021 - Cover1
AOPA Pilot Magazine - August 2021 - Cover2
AOPA Pilot Magazine - August 2021 - Contents
AOPA Pilot Magazine - August 2021 - 2
AOPA Pilot Magazine - August 2021 - 3
AOPA Pilot Magazine - August 2021 - 4
AOPA Pilot Magazine - August 2021 - 5
AOPA Pilot Magazine - August 2021 - 6
AOPA Pilot Magazine - August 2021 - 7
AOPA Pilot Magazine - August 2021 - 8
AOPA Pilot Magazine - August 2021 - 9
AOPA Pilot Magazine - August 2021 - 10
AOPA Pilot Magazine - August 2021 - 11
AOPA Pilot Magazine - August 2021 - 12
AOPA Pilot Magazine - August 2021 - 13
AOPA Pilot Magazine - August 2021 - 14
AOPA Pilot Magazine - August 2021 - 15
AOPA Pilot Magazine - August 2021 - 16
AOPA Pilot Magazine - August 2021 - 17
AOPA Pilot Magazine - August 2021 - 18
AOPA Pilot Magazine - August 2021 - 19
AOPA Pilot Magazine - August 2021 - 20
AOPA Pilot Magazine - August 2021 - 21
AOPA Pilot Magazine - August 2021 - 22
AOPA Pilot Magazine - August 2021 - 23
AOPA Pilot Magazine - August 2021 - 24
AOPA Pilot Magazine - August 2021 - 25
AOPA Pilot Magazine - August 2021 - 26
AOPA Pilot Magazine - August 2021 - 27
AOPA Pilot Magazine - August 2021 - 28
AOPA Pilot Magazine - August 2021 - 29
AOPA Pilot Magazine - August 2021 - 30
AOPA Pilot Magazine - August 2021 - 31
AOPA Pilot Magazine - August 2021 - 32
AOPA Pilot Magazine - August 2021 - 33
AOPA Pilot Magazine - August 2021 - 34
AOPA Pilot Magazine - August 2021 - 35
AOPA Pilot Magazine - August 2021 - 36
AOPA Pilot Magazine - August 2021 - 37
AOPA Pilot Magazine - August 2021 - 38
AOPA Pilot Magazine - August 2021 - 39
AOPA Pilot Magazine - August 2021 - 40
AOPA Pilot Magazine - August 2021 - 41
AOPA Pilot Magazine - August 2021 - 42
AOPA Pilot Magazine - August 2021 - 43
AOPA Pilot Magazine - August 2021 - 44
AOPA Pilot Magazine - August 2021 - 45
AOPA Pilot Magazine - August 2021 - 46
AOPA Pilot Magazine - August 2021 - 47
AOPA Pilot Magazine - August 2021 - 48
AOPA Pilot Magazine - August 2021 - 49
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AOPA Pilot Magazine - August 2021 - 53
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AOPA Pilot Magazine - August 2021 - 76
AOPA Pilot Magazine - August 2021 - 77
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AOPA Pilot Magazine - August 2021 - 96
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AOPA Pilot Magazine - August 2021 - 112
AOPA Pilot Magazine - August 2021 - Cover3
AOPA Pilot Magazine - August 2021 - Cover4
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