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• Improper use of brakes.
• Failure to comply with airport markings,
signals, and clearances.
• Taxiing too fast for conditions.
• Improper control positioning for wind.
conditions.
• Failure to consider wingspan and space
required to maneuver during taxiing.
BEFORE TAKEOFF CHECK—
SELF-LAUNCHING GLIDER
The manufacturer provides a takeoff checklist. As
shown in Figure 7-22, the complexity of many selflaunching
gliders makes a written takeoff checklist an
essential safety item. Before takeoff items on a selflaunch
glider may include fuel quantity check, fuel
pressure check, oil temperature check, oil pressure
check, engine run-up, throttle/RPM check, propeller
pitch setting, cowl flap setting, and vacuum check. In
addition, other items also must be completed. These
include making sure seat belts and shoulder harnesses
are latched or secured, doors and windows are closed
and locked, canopies are closed and locked, airbrakes
are closed and locked, altimeter is set, VHF radio
transceiver is set, and the directional gyros is set.
COMMON ERRORS
• Improper positioning of the self-launch glider
for run-up.
• Failure to use or improper use of checklist.
• Improper check of flight controls.
• Failure to review takeoff emergency
procedures.
NORMAL TAKEOFF—
SELF-LAUNCHING GLIDER
When the before takeoff checklist is complete, the
pilot should check for traffic and prepare for takeoff.
If operating from an airport with an operating control
tower, request and receive an ATC clearance prior to
7-19
taxi. The pilot should make a final check for conflicting
traffic, then taxi out on to the active runway and
align the glider with the centerline.
The pilot should smoothly apply full throttle and begin
the takeoff roll, tracking down the centerline of the
runway, easing the self-launch glider off the runway at
the recommended lift-off airspeed, and allowing the
glider to accelerate in ground effect until reaching the
appropriate climb airspeed. If the runway has an obstacle
ahead, this will be best angle of climb airspeed (Vx)
until the obstacle is cleared. If no obstacle is present,
the preferred airspeed will be either best rate of climb
airspeed (Vy), or the airspeed for best engine cooling
during climb. The pilot should monitor the engine and
instrument systems during climb out. If the self-launch
glider has a time limitation on full throttle operation,
the throttle should be adjusted as necessary during the
climb.
CROSSWIND TAKEOFF—
SELF-LAUNCHING GLIDER
The long wingspan and low wingtip clearance of the
typical self-launch glider makes it vulnerable to wing
tip strikes on runway border markers, light stanchions,
and other obstacles along the edge of the runway. The
takeoff roll should be started with upwind aileron and
downwind rudder. In a right crosswind, for example,
the control stick should be held to the right and the rudder
held to the left. The aileron input keeps the crosswind
from lifting the upwind wing, and the downwind
rudder minimizes the weathervaning tendency of the
self-launch glider in a crosswind. As airspeed increases,
control effectiveness will improve, and the pilot can
gradually decrease some of the control. The self-launch
glider should be lifted off at the appropriate lift-off airspeed,
and accelerate to climb airspeed. During the
climb, a wind correction angle should be established so
that the self-launch glider will track the extended centerline
of the takeoff runway. [Figure 7-23]
Complexity of the self-launching glider requires a complex instrument panel and a lengthy pre-takeoff checklist.
Figure 7-22. Self-launch glider instrument panels.
Crab into wind to hold
runway centerline.
Liftoff
Figure 7-23. Self-launch glider—crosswind takeoff.
7-20
COMMON ERRORS
• Improper initial positioning of flight controls.
• Improper power application.
• Inappropriate removal of hand from throttle.
• Poor directional control.
• Improper use of flight controls.
• Improper pitch attitude during takeoff.
• Failure to establish and maintain proper climb
attitude and airspeed.
• Improper crosswind control technique.
SELF-LAUNCH—CLIMB-OUT
AND SHUTDOWN PROCEDURES
Self-launch gliders have powerplant limitations, as
well as aircraft performance and handling limitations.
Powerplant limits include temperature limits, maximum
RPM limit, maximum manifold pressure limit,
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Glider Flying Handbook(67)
