PA-2 Pilot Assist Link Auto Pilot System FAQ

• Can I use the PA2 with a rudder/elevator aircraft or only aileron/elevator?
  
  
• My aircraft 'porpoises' or 'hunts' for a straight line when I use the PA2. What am I doing wrong?
  
  
• Can I use the PA2 on a helicopter?
  
  
• Are there any times I should NOT use my PA2?
  
  
• Can I use the PA2 in conjunction with fail-safe on my PCM transmitter to help protect my airplane in the event of interference?
  
  
• Can I use the PA2 with a 4 channel radio system?
  
  
• How does the PA2 differ from the PA1?
  
  
• What is the auxilary plug for?
  
  
• Can the PA2 be used in mountainous terrain?
  
  

I did not find the answer to my question here. How do I get further assistance?

Absolutely! The PA-2 can be used in a rudder/elevator combination to level the aircraft as easily as aileron/elevator.

You've set the gain too high and the unit is over-correcting. Turn the gain setting down by 10% and fly the model again. Continue to decrease until you are just under this point where the model 'porpoises'. This will give you the maximum sensitivity.

No, the PA2 is not designed for helicopter use.

Yes. Because the PA2 works by telling light (sky) from dark (ground), it should not be used on extremely bright days, or when flying over snow, water, or other reflective surface.

Absolutely, however, you will not be able to adjust its sensitivity in flight (but you can on the ground before/after flights). The PA1's sensitivity cannot be adjusted AT ALL if using a 4-channel system which doesn't have a channel free for this.

The PA1 offered two servo per surface support for a model with flaperons, for example.

The PA2 does not offer that but instead offers on-ground gain adjustment along with the optional in-flight gain adjustment so that the sensitivity can be adjusted pre-flight for those using a 4-channel or similar radio system.

This plug allows you to adjust the gain (amount of control) of the PA2 while in flight by using an auxiliary channel

No. The PA2 requires a clean horizon to operate properly. It will not function properly around mountains, tall buildings, or other items which will alter its view of a flat horizon.

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