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Grants Pass Airport Brookside Blvd. Deland Airport A Flightline Blvd. Bargain Bin Avionics. How PayPal Works. It seems like I have become an autopilot troubleshooter since beginning my articles on autopilots in Midwest Flyer Magazine.
After coming to me for some instruction following an autopilot repair, fellow pilot Galen Manternach of Wisconsin Rapids, Wis. After briefing on how to program the autopilot, which in this case was a King KFC with flight director and altitude preselect, we departed using the GA button to set pitch on the flight director for climb out.
After reaching a safe altitude, the autopilot was turned on with the preselected altitude set to feet. The airplane did not level off as programmed, so the rest of the flight was focused on troubleshooting.
After several phone calls, the aircraft was on its way back to the autopilot shop. Autopilots use servos to translate electrical energy into mechanical outputs to fly the airplane. As a safety feature, it is necessary for the pilot to be able to overpower these servos so a safety or slip clutch is included as part of the servo. In our case, a remanufactured servo had this clutch set too loose, thus slipping rather than applying elevator down pressure.
In some cases, this includes the pilot overpowering the servo to check the slippage of this clutch. This should not be done on all autopilots, as it may damage the servos, so please check your manual! What I consider as most important on any autopilot is the ability to keep the wings level and fly a heading and altitude. In my first article in this series on autopilots, I mentioned altitude hold as this is how one gets in trouble with ATC, as their separation is based primarily on altitude.
It would take several corrections on the autopilot to get established on course. In order for this to work, we need a GPS that can output a digital signal and an autopilot that could read the digital signal. You must have JavaScript enabled in your browser to utilize the functionality of this website.
Grants Pass Airport Brookside Blvd. Deland Airport A Flightline Blvd. Bargain Bin Avionics. How PayPal Works. Add to Cart Price on Application. Pitch axis signal inputs are derived from a reliable solid state absolute pressure transducer and the accelerometer, not the artificial horizon gyro.
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