Page Date: 20. April 2002
902 - 3
Section 902
Electric Pedal Adjustment
Pilot´s Operating Handbook
EXTRA 300L
902
ELECTRIC PEDAL ADJUSTMENT
902.1
GENERAL
To improve seat and control convenience, the EXTRA 300/L can be equipped with an
optional elect. pedal adjustment system. The pedal adjustment system provides an in-flight
capability to adjust the pedals according the pilots size and operation. For example a more
relaxed, stretched seating position for long cross-country flights is possible.
902.2
LIMITATIONS
An adjustment of the pedal position during takeoff and landing is not allowed.
902.3
EMERGENCY PROCEDURES
In case of an electric failure occurs during adjustment procedure (e.g. unintentional contin-
ued adjustment by failure of a control switch), try to move the pedals to the opposite direc-
tion immediately. If this measure is unsuccessful, the circuit breaker has to be pulled without
delay. The relative low actuation velocity enables the pilot to sufficient rudder control input.
902.4
NORMAL PROCEDURES
Check rudder control system for impeccable, easy operation during preflight inspection. For
that purpose the pedals have to be adjusted to a position, which allows full control inputs of
rudder and aileron simultaneously as well as full rudder control input in conjunction with full
applied brakes. the pedals may be stepless adjusted inflight independently by two switches
located on the instrument panel. Pay attention to symmetrical adjustment of left and right
pedal.
902.5
PERFORMANCE
Not affected.
902.6
WEIGHT AND BALANCE
Not affected.
902.7
DESCRIPTION OF THE SYSTEM
The optional electrical pedal adjustment system which is guided on slide tubes, replaces the
rear mechanical rudder pedal adjustment. Such a pedal system consists of a foot rest and
the rudder pedal itself, including brake pedal and brake cylinder. An S-shaped cable leader
is attached to the rudder pedal, through which the control cable runs from the rudder actua-
tor arm to the front cable attachment at the steel frame. The connection to the front seat
pedals is realized by a further cable, which is fixed to the control cable by two Nicopress oval
sleeves. The stepless pedal adjustment is realized by electromechanical actuators which are
controlled separately by switches on the rear instrument panel (refer to figure below). The
total travel of the system is limited to 6.3" by a front and a rear stop switch at the slide tube
Summary of Contents for 300L
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