Clocks; Multi-Function Chronometer And Instrument Location (Figure 5-21) - BOMBARDIER LEARJET 40 Pilot's Manual

Pilot's Manual

CLOCKS

Each instrument panel is equipped with a multi-function chronometer
to display GMT, local time (LT), flight time (FT), and elapsed time (ET).
The SEL button selects what is to be displayed and the CTL button con-
trols what is being displayed (Figure 5-21). Pressing SEL sequentially
selects GMT, LT, FT or ET for display. FT starts counting when the main
gear weight-on-wheels switches transition to the air mode and stops
counting when they transition back to ground mode. The CTL button
resets FT back to zero when held down for three seconds. ET is started
and reset when the CTL button is pushed momentarily. Depressing the
SEL and CTL buttons simultaneously enters the set mode and GMT or
LT can be set. The CTL button is then pressed to increment the flashing
digit to the desired value. Pressing the SEL button enters that value and
toggles to the next digit to be set.
Power for the chronometers is 28-vdc supplied through a 1-amp L and
R CLOCK circuit breaker located on pilot's and copilot's circuit breaker
panels respectively (INSTRUMENT/INDICATIONS group).
M850
CHRONOMETER
GMT LT FT ET
SELECT CONTROL
SEL CTL
PILOT COPILOT
MULTI-FUNCTION CHRONOMETER AND INSTRUMENT LOCATION
Figure 5-21
5-80
PM-132A