Futaba 4YF 2.4GHz FHSS - Manual (Page 13)

13
FLIGHT PREPARATION
Flight preparation is to be done at the flying field.
If you are an inexperienced pilot, be certain your flight instructor performs these following checks with you.
Check the Controls
1. Get the frequency clip from the frequency control board at your flying site if the site has a clip for 2.4GHz.
2. Turn on the transmitter, then the receiver (remember to do this in reverse order when turning off the system).
3. Operate and observe the controls. Look for inadvertent movement and listen for abnormal servo sounds. If problems are
noted, correct them before flying. Look for binding pushrods or servo arms or pushrods that interfere with each other.
4. One at a time, operate each control on the airplane using the sticks on the transmitter to make certain each control
is responding correctly. This must be done before every flight. (There are several types of malfunctions that can be
discovered by performing this elementary task, thus saving your model!)
Range Check the Radio
A range check must be performed before the first flight of a new model. It is not necessary to do a range check before every
flight (but is not a bad idea to perform a range check before the first flight of each day). A range check is the final opportunity
to reveal any radio malfunctions, and to be certain the system has adequate operational range.
Power Down
switch
1. We have installed a special "Power Down Mode" for doing a ground range check. To activate the
“Power Down Mode” please turn on the transmitter while pushing and holding the Power Down
switch on the transmitter, continue holding the Power Down switch. During this mode, the RF
power is reduced so the range test can be performed. When this mode is active the red LED on
the front of the transmitter starts fast blinking.
This mode continues for 90 seconds while holding the Power Down switch and after that the
power will return to the normal level automatically. And once you release the Power Down switch
within 90 seconds, the RF power will return to the normal level.
This mode is available one time only so if you need to re-use this function the transmitter power
must be cycled.
2. Walk away from the model while simultaneously operating the controls. Have an assistant stand by the model and signal
what the controls are doing to confirm that they operate correctly. You should be able to walk approximately 10m (33ft) from
the model without losing control.
3. If everything operates correctly, return to the model. Set the transmitter in a safe, yet accessible location so it will be within
reach after starting the engine. Be certain the throttle stick is all the way down, then start the engine. Perform another
range check with your assistant holding the plane and the engine running at various speeds. If the servos jitter or move
inadvertently, there may be a problem. Do not fly the plane! Look for loose servo connections or binding pushrods. Also be
certain that the battery has been fully charged.
4. NEVER start flying in the Power Down mode. On the safe side, cycle the power off then back on when ready to fly.