Cessna 402C - Page 87

(AMPLIFIED PROCEDURES)
SECTION 4
NORMAL PROCEDURES
I.
2.
3.
-
4.
5.
Since the use of full throttle is not recommended in the static runup,
closely observe full-power engine operation early in the takeoff run. The
maximum allowable manifold pressure of 39.0 inches Hg. manifold pressure
should not
be exceeded. Throttle action should be smooth and slow in order
that the waste gate can become operative as early as possible. Signs of
rough engine operation, unequal power between engines, or sluggish engine
acceleration are
good cause for discontinuing the takeoff. If this occurs,
make a thorough full throttle static runup before another takeoff is
attempted.
Full
throttle operation is recommended on takeoff since it is important
that a speed well above air minimum control speed (80 KIAS) be obtained as
rapidly as possible.
It is desirable to accelerate the airplane to 95 KIAS
(intentional one engine inoperative speed) before lift-off for additional
safety in case
of an engine failure. This safety may have to be compro-
mised slightly where short and rough fields prohibit such high speed
before takeoff.
For crosswind takeoffs, additional power may be carried on the upwind
engine until the rudder becomes effective. The airplane is accelerated to
a
slightly higher than normal takeoff speed. and then is pulled off
abruptly to prevent possible settling back to the runway while drifting.
When clear of the ground, a coordinated turn is made into the wind to
correct for drift.
A takeoff with one main tank full and the opposite tank low on fuel
creates a
lateral unbalance. This is not recommended since gusty air or
premature
lift-off could create a serious control problem.
~- After takeoff, it is important to maintain the intentional one engine
inoperative speed
(95 KIAS) to 50 feet. As the airplane accelerates still
further to all engines best rate-of-climb speed (109 KIAS) , it is 900d
practice to climb rapidly to an altitude at which the airplane is capable
of circling the field on one engine.
AFTER TAKEOFF
Brakes - APPLY momentarily.
Landing Gear - RETRACT. Check gear unlocked and HYO PRESS lights
off.
Best Angle-of-Climb
Speed (Sea Level) - B4 KIAS after reaching 50 feet if immediate
obstacle clearance is a consideration.
Best Rate-of-Climb
Speed - 109 KIAS at sea level and 6B50 pounds.
Refer
to Section 5 for climb speed at
altitude and reduced weight.
Auxiliary
Fuel Pumps - CHECK ON.
To establish climb configuration, retract the landing gear, set climb
power, check auxiliary fuel pumps on and adjust the mixtures for the
selected
power setting.
Before retracting the landing gear, apply the brakes momentarily t~ stop
the
rotation of the main wheels. Centrifugal force caused by the rapldly
rotating wheels
expands the diameter of the tires, and if ice or mud has
accumulated in the wheel wells, the rotating wheels may rub as they enter.
I November 1979
4-17