Learjet 60 - Page 405

Learjet 60

Pilot's Manual
DESCENT
AND HOLDING PERFORMANCE
The
descent and holding performance presented on
the following
pages is based upon
flight test data and represents the average
deliv-
ered aircraft .
DESCENT PERFORMANCE
SCHEDULE
Figures 8-17 and 8-18 show time, distance
and fuel used, for normal
and high-speed descents respectively,
from a given altitude to sea lev-
el . An
average descent weight of 16,000 pounds
is assumed in the ta-
bles . Subtraction
of performance values for two altitudes
results in the
time, distance and fuel
required for descent between the
two alti-
tudes . The descent
speed schedule is presented
with each table . The
power setting
for descent is IDLE thrust . Data are
shown without the
use of spoilers . Descent
performance is improved
if spoilers are de-
ployed .
HOLDING OPERATIONS
Figure 8-19 shows fuel flows
and holding speeds
for various weights
and altitude conditions
. The holding speeds
presented are sufficient
to ensure a comfortable
margin above shaker
operation or low-speed
buffet while
maneuvering in a holding pattern
.
PM-123
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