DA20-C1 Flight Manual
Description
Doc # DA202-C1 April 06, 2010 Page 7 - 24
7.12. PITOT AND STATIC PRESSURE SYSTEMS
The pitot pressure is measured on the leading edge of a calibrated probe below the left wing.
The static pressure is measured by the same probe. For protection against water and humidity,
water sumps are installed within the line. These water sumps are accessible beneath the left
seat shell.
The error in the static pressure system is negligible. For the error of the airspeed indicating
system refer to Chapter 5.
The pitot static pressure probe should be protected whenever the aircraft is parked to prevent
contamination and subsequent malfunction of the aircraft systems relying on its proper
functioning.
NOTE
Use only the factory supplied pitot static probe cover, P/N G-659-
200 with the “Remove before Flight” flag attached.
7.13. STALL WARNING SYSTEM
A stall warning horn, located in the left instrument panel, will operate at a minimum airspeed of
5 kts before a stall. The horn grows louder as the speed approaches the stall speed. The horn
is activated by air from a suction hose that connects to a hole in the leading edge of the left
wing. The hole has a red circle around it. The stall warning hole should be plugged whenever
the aircraft is parked to prevent contamination and subsequent malfunction of the stall warning
system.
NOTE
Use only the factory supplied stall warning plug, P/N 22-1010-01-
00 with the “Remove before Flight” flag attached.
7.14. AVIONICS
The center of the instrument panel contains the radio and navigation equipment. The
microphone key for the radio is installed in the control stick. There are two connectors for
headsets on the backrest of the seat.
CAUTION
HEADSETS WITH A PRESS TO TALK (PTT) SWITCH MUST
NOT BE USED IN THE HAND HELD MICROPHONE JACK.
IT CAN CAUSE DAMAGE TO EQUIPMENT.
HAND HELD MICROPHONES MUST NOT BE PLUGGED INTO
CREW POSITION MICROPHONE JACKS. DAMAGE TO THE
GMA 340 AUDIO PANEL CAN OCCUR.
There is a hand-held microphone jack installed on the pilot’s side, on the seat bulkhead
between the fuselage and the speaker.
Operating instructions for individual avionics equipment should be taken from the manuals of
the respective manufacturers.
Revision 25
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