Altimeter
For aircraft equipped with air data system type I, II and III
Two altimeters are installed; one at each pilot’s instrument panel. Each altimeter shows
altitude in feet. Altitude information is derived from the pitot static system.
The captain’s altimeter is a servo driven instrument. The static pressure is converted in the
instrument into an electric signal. This signal drives the altitude pointer. The indication is also
used for altitude pre-select, altitude alerting, ATC 1 transponder and TCAS.
The first officer’s altimeter is a barometric altimeter. This altimeter contains a vibrator to
optimize accuracy of the indication.
For aircraft equipped with air data system type IV, V and VI
Two altimeters are installed; one at each pilot’s instrument panel. Each altimeter shows
altitude in feet. Standard altitude information is derived from the ADC.
Data from the captain or first officer’s altimeter is used for altitude pre-select and altitude
alerting. Data from the captain altimeter only is used by the Flight Management System
(FMS).
Vertical speed indicator
Two vertical speed indicators are installed; one at each pilot’s instrument panel. Each
indicator shows instantaneous vertical speed, surrounding traffic, and TCAS Traffic
Advisory/Resolution Advisory information on a full color Liquid Crystal Display (LCD).
For aircraft equipped with air data system type I, II and III
A pointer and a vertical speed scale are displayed on the LCD and indicate present aircraft
vertical speed in feet per minute. Vertical speed information is derived from the pitot static
system.
For aircraft equipped with air data system type IV, V and VI
A pointer and a vertical speed scale are displayed on the LCD and indicate present aircraft
vertical speed in feet per minute. Vertical speed information is derived from the onside ADC.
Fokker 50 - Flight Navigation Instruments
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