2-42
68.
Secondary Descent Profile:
a.
reduce throttle to 18-
20” MAP;
b.
set flaps at 20°;
c.
ensure cowl flaps are closed;
d.
reduce propeller speed to 2300 RPM for noise abatement;
e.
increase IAS to 90 MPH;
f.
gradually reduce power in a steady 90 MPH descent;
g.
ensure the cooling rate does not exceed 60° /minute; and
h.
up to full flap may be extended in the terminal circuit phase when establishing the
final landing configuration.
CAUTION
For both descent profiles, the repetitive nature of
towing operations places unusual strain on the flap
system. Using flaps at the higher end of the certified
speed range has been associated with stress
cracking in the flap track brackets. To reduce the risk
of stress cracking, pilots should not normally extend
the first 10° of flaps above 110 MPH, and any further
flaps above 90 MPH. Flaps may be lowered at speeds
up to the certified limits on an exceptional basis, or
whenever prudent for safety.
NOTE
The most effective means of minimizing shock cooling
is a slow, gradual reduction in throttle during the level
off procedure and throughout the post-release
descent. In case of a high cooling rate or a shock
cooling alert, increase power and reduce airspeed as
required.
Summary of Contents for 182
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