Sidestick Transducers

Sidestick Transducers

Four sidestick transducers were recently acquired (thank you Daniel) from Germany and installed on the OEM sidesticks flight control mechanism.   On each side stick one transducer is responsible for the pitch (elevator control) and the other for roll (aileron control). Interfacing the transducer is simply done by connecting the pin outs to a potentiometer … Continue reading

Sidestick Solenoid Lock

Sidestick Solenoid Lock

When the autopilot (AP) is engaged the sidesticks are locked in placed by a solenoid. This prevents the Pilot Flying (PF), or Pilot Not Flying (PNF) from accidentally bumping or moving the sidestick when AP is on. However with a certain amount of force the pilots can still override the solenoid disengaging the solenoid and … Continue reading

Substituting Transducers 

Substituting Transducers 

Transducers are expensive. These are well refined potentiometers attached to your throttle lever, sidestick, flaps lever or spoiler/speedbrake. Transducers usually come with more than one potentiometer – this is for redundancy and to ensure the values in all the potentiometer read the same; any error would have severe catastrophic consequence. If you are lucky, when … Continue reading

Sidestick Pinouts

Sidestick Pinouts

Captain Sidestick Pinouts 2197VCA AutoPilot Disconnect: S/B Solenoid: h (28 VDC)/g (Gnd) Pitch: G, Y (wiper), H [log output] Roll: E, W (wiper), X [log output] 2189VCA Push To Talk L/M 2191VCA Pitch: K (5V), L (Gnd), M Roll: N (5V), D (Gnd), O First Officer Sidestick Pinouts 2180VCA Push to Talk: J/K 2182VCA Pitch: … Continue reading

Anatomy of an Airbus Sidestick

Anatomy of an Airbus Sidestick

The Airbus sidestick is not a simple joystick. Each axis is connected to a transducer which relays electrical signals to the ailerons and elevators. In addition there is a solenoid which is activated when Autopilot is engaged preventing the sidestick from moving. However, apply enough force and the AP and solenoid will disengaged. Continue reading