t TAKEOFF
ANDCLIMB
I
/
CAUTION
Do not takeoff with ice or frost on the wings, as ice or frost will
radically change the flight characteristics of the airplane.
The shape of the wing fuel tanks is such that in certain maneuvers
the fuel may move away from the tank outlet. If the outlet is
uncovered, the fuel flow will be interrupted and a temporary loss
of power may result. Pilots can prevent inadvertent uncovering of
the outlet by having adequate fuel in the tank selected and
avoiding maneuvers which could result in uncovering the outlet.
Normal and running turning takeoffs are not to be made with the
main tanks less than onequarter full as fuel flow interruption may
occur. Only main tanks may be used for takeoff. Auxiliary or tip
tanks are for level flight only and may never be used for takeoff.
Prolonged slips or skids of 30 seconds or more, in any pitch
attitude or other unusual or abrupt maneuvers which could cause
uncovering of the fuel out&t must be avoided when auxiliary and
tip tanks are being used or when main tanks are less than
onequarter full.
.
::
1. Parking brake - off.
2. Mixture controls - forward.
3. Propeller controls - forward.
4. Throttle controls - forward.
5.
6.
Accelerate to - 80 MPH (Prior to climb)
Landing gear - retract.
7.
8.
Accelerate to - 112 MPH (Best R/C speed)
Wing flaps - retracted.
9.
10.
Climb power -set. (At approx. 400 AGL)
11.
Electric fuel pump - off one at a time.
12.
Cowl flaps - set. (Maintain cylinder head temperature at or below maximum.)
Oxygen - no smoking - on (10,000 feet and above)
Trim for take-off so that a light back pressure on the control wheel allows the airplane to lift from the
runway.
During take-off roll apply light back pressure to the control wheel to avoid porpoising during the
take-off run. Accelerate to single engine minimum control speed (Vmc) before applying stronger back
pressure for rotation.
When taking off from fields of high elevation use the turbochargers, if installed, to obtain a power
setting of 29.5 inches of manifold pressure at 2700 RPM for a maximum for 5 minutes. Turn the turbo
control slowly toward ON position to attain correct manifold pressure. Do not exceed 29.5 inches of
manifold pressure and use the vernier control for fine adjustment.
TWIN COMANCHE
C/
.-
OPERATING INSTRUCTIONS
REVISED; March 21,1975
PAGE S
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