Quik & Quik GT450 Aircraft Operating Instructions
29
th
March 2007
Issue 1
Page 57 of 68
The trimmer takes approximately 18 seconds to run through the whole range. In the cruise, there may be a
delay of a few seconds when selecting nose-up trim as the trimmer takes up the slack.
Note that the takeoff trim placard is set at approximately 65mph, to avoid too much pitch-up on the initial
climb. For landing approach, trim at 55 mph solo, 60mph dual.
Abnormal operation
The trim motor only runs when the pilot holds the trim switch, it will stop as soon as it is released. It can also
be stopped by pulling out the 5A circuit breaker or by turning off the main master switch.
The trim motor 5Amp circuit breaker should not trip under any normal operating condition. It may trip if the
pilot pulls the bar all the way back whilst selecting full nose up trim; this practice is not recommended as it
puts unnecessary load on the system. In this case it is permissible to reset the C.B. after 2 minutes. The
C.B. will also trip if the trim motor should run past the normal limit micro switch and the motor is not stopped
by the pilot, in which case the bungee will eventually be stopped at the top of the engine mount frame and
the trim speed will be very slow, 40-45mph.
With correct inspection and maintenance, trim cord or bungee failure is unlikely. If it happens the aircraft will
go to full fast trim, 75-82 mph. In the case of main electrical system failure, the trim will stay where it is. In
any case, fly the aircraft at the normal approach and landing speeds, accepting the out-of-trim force.
NOTE
•
The aircraft should be left with the trimmer slack ( fast) to prolong the life of the system.
•
With correct maintenance, failure is unlikely. However It is advisable to practice landing at both extremes
of trim occasionally.
Never take off with a faulty trim system.
Always check trim operation and flight
controls before takeoff.
WARNING
!
