Mid-Continent Instruments and Avionics
Revision D, March 21, 2016
Manual Number 9018205
16
5.3.3 Flight
Timer
When operational mode is changed to flight timer, FLIGHT will be backlit (refer to Figure 9). In
order for the flight timer to be active, a ground or aircraft power signal must be supplied to pin 4 of
the connector. This can be provided from an event-based relay (such as engine start or weight-
on-wheels). Or it can simply be connected via jumper to the power or ground pins of the unit to
activate on unit power. The decimal point will blink briefly every 2 seconds to indicate that the
flight timer is active. Flight time is displayed in hours and tenths of hours up to 99999.9 hours.
The flight timer maintains the accumulated time (but does not run) when power is off.
Two flight timers are enabled on the MD93. The default flight timer shown (normally in FLIGHT
mode) is a resettable timer. Pressing and holding either
–
or
+
button will display the non-
resettable flight timer. Upon releasing the
–
or
+
button, the resettable flight timer will be
displayed. Note: the non-resettable timer value may be initially set in diagnostic mode. Contact
Mid-Continent Instruments and Avionics for further details if required. For more detailed operation
of flight timer, refer to Figure 10 below.
Figure 9
Flight Timer Mode
RESETTABLE
FLIGHT
TIMER
Flight
timer
is
displayed
(in
tenths
of
hours).
Flight
timer
is
enabled
if
input
signal
is
pulled
high
or
low.
The
decimal
point
will
blink
off
for
approximately
1/10
th
of
a
second
every
two
seconds
to
indicate
that
the
flight
timer
is
currently
enabled.
RESETTABLE
FLIGHT
TIMER
is
reset
Press
&Hold
MODE
for
2
sec
NON
‐
RESETTABLE
FLIGHT
TIMER
The
Non
‐
Resettable
Flight
timer
is
viewed
by
holding
either
the
– or
+
button.
When
the
(
‐
or
+)
button
is
released,
flight
timer
displays
the
resettable
flight
timer.
Press
&
Hold
+
or
‐
button
Release
+
or
‐
button
Figure 10
Flight Timer Operation
