Pilot Briefing Schleicher ASK-21 N421G
Updated September 2, 2016
File: ASK-21 Notes Burtt Compton GBSC 2016-09-02.doc Page: 8 of 10
ELECTRICAL SYSTEM. All components factory installed.
BATTERIES. Battery box was installed at the factory, secured in the wing roots, and
accessible from the back seat.
A switch on the front panel turns the power on for the radio and instruments.
Make sure it is turned off after last flight and remove the battery and put on charge.
RADIO. This ASK-21 is equipped with a Becker AR 6201 radio, flexible boom mic’s with a
push-to-talk button on the front and rear stick. Study the radio features to learn how to use
it. It has a “flip-flop” feature to store a second inactive frequency. Make sure you transmit
on the correct frequency.
Battery voltage is shown on the face of the Becker by pressing the Mode button.
INSTRUMENTS. Factory installed in “English” unit (feet and knots).
Two Variometers. Both are nicely compensated to reduce “stick thermals” by a Total
Energy venturi probe located on top of the fuselage, behind the wing.
The Winter Vario is “mechanical” . . . no electricity required.
The Lxnav S-3 is an electric / audio variometer. A separate user manual is available to
study to get the maximum benefit from this instrument.
SEATS / HEADREST / RUDDER PEDAL ADJUST. See Flight Manual for details.
BAGGAGE COMPARTMENT. Do not place anything behind the rear seat.
Jackets, hats, bottles, booklets can fall down into the flight controls in the fuselage!
You can place some small NON-METAL items in the wing roots by the batteries.
FLIGHT CONTROLS. Standard Euro Colors.
Blue: Airbrakes / combined Wheel Brake
Yellow: Tow Release
Green: Trim (by control stick)
Red: Canopy Emergency Release (for bailout.)
White: Canopy Latches.
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