Learjet 60 - General Flight Characteristics

Learjet
60
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Pilot's Manual
WORD% Voao
FLIGHT CHARACTERISTICS &
OPERATIONAL PLANNING
GENERAL FLIGHT CHARACTERISTICS
Taxi operations can be conducted using one
or both engines . If nose-
wheel steering is inoperative or when
taxiing on a slick or icy surface,
it is recommended that taxiing be conducted
using both engines to
preclude
aggravating the problem with asymmetric
thrust .
The
digital nose-wheel steering system provides
excellent taxi maneu-
verability . At low ground speeds, nose
wheel travel is approximately
60° either side of neutral . The steering
authority tapers off as ground
speed increases and is reduced to zero
at approximately 80 knots .
At
90
knots, the system will automatically
disengage . The rudder is
effec-
tive for
directional control above 45 KIAS .
The two pod-mounted PW305A
engines, manufactured
by Pratt and
Whitney Canada, Inc ., are
rated at 4600 pounds thrust
at sea level .
The time required to accelerate
these engines from
idle RPM to maxi-
mum thrust RPM is
approximately seven (7)
seconds . The engine
thrust and acceleration
characteristics
complement the Learjet 60
air-
frame so that
outstanding performance,
flexibility, and safety
margins
are available in
all flight regimes .
Single-engine performance
offers an
example of
these capabilities in that the
sea-level single-engine
rate of
climb at 23,100
pounds is approximately
1,340 feet per
minute and the
single-engine
service ceiling is
approximately 31,000
feet at a cruise
weight of 19,000
pounds .
PM-123
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