Tutor Platform

AA.I.A.K3

Knowledge

Propellers–type, controls, feathering/unfeathering, auto-feather, negative torque sensing, synchronizing, synchrophasing, and thrust reverse, including uncommanded reverse procedures.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

Sign in to generate a study note

From the FAA library

  • Chapter 13: Transition to Multiengine Airplanes › Operation of Systems › Propeller Synchronization

    landing, and single-engine operation. The AFM/POH should be consulted for system description and limitations. A variation on the propeller synchronizer is the propeller synchrophaser. A propeller synchrophaser acts much like a synchronizer to precisely match rpm, but the synchrophaser ... further. It not only matches rpm but actually compares and adjusts the positions of the individual blades of the propellers in their arcs. There can be significant propeller noise and vibration reductions with a propeller synchrophaser. From the pilot…

  • Chapter 16: Transition to Jet-Powered Airplanes › Pilot Sensations in Jet Flying

    Idle reverse on a propeller produces a large amount of drag. On a jet engine, however, selecting idle reverse produces very little reverse thrust. In a jet airplane, the pilot should select reverse, apply reverse thrust as appropriate, and remain ... within any AFM limitations. It is essential that pilots understand not only the normal procedures and limitations of thrust reverser use, but also the procedures for coping with uncommanded reverse. While thrust reverser systems are designed to prevent unintentional deployment…

  • Chapter 6: Flight Controls › Flight Control Systems › Primary Flight Controls

    Flight Control Systems Flight Controls Aircraft flight control systems consist of primary and secondary systems. The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight. Wing flaps, leading ... edge devices, spoilers, and trim systems constitute the secondary control system and improve the performance characteristics of the airplane or relieve the pilot of excessive control forces. Primary Flight Controls Aircraft control systems are carefully designed to provide adequate responsiveness…

  • Chapter 13: Transition to Multiengine Airplanes › Operation of Systems › Feathering Propellers

    manufacturers due to the excessive stress and vibrations generated. As just described, a loss of oil pressure from the propeller governor allows the counterweights, spring, and/or dome charge to drive the blades to feather. Logically then, the propeller blades ... reduction in centrifugal force allows small anti-feathering lock pins in the pitch changing mechanism of the propeller hub to move into place and block feathering. Therefore, if a propeller is to be feathered, it needs…

  • Chapter 6: Flight Controls

    addition, in some large and fast aircraft, controls are boosted by hydraulically or electrically actuated systems. In both the fly-by-wire and boosted controls, the feel of the control reaction is fed back to the pilot by simulated means ... Current research at the National Aeronautics and Space Administration (NASA) Dryden Flight Research Center involves Intelligent Flight Control Systems (IFCS). The goal of this project is to develop an adaptive neural network-based flight control system. Applied directly to flight…

  • 14 CFR Part 141, Appendix J to Part 141—Aircraft Type Rating Course, For Other Than an Airline Transport Pilot Certificate

    Part 141, Appendix J to Part 141—Aircraft Type Rating Course, For Other Than an Airline Transport Pilot Certificate (1) A type rating for an airplane—single-engine course: (i) Preflight preparation; (ii) Preflight procedures; (iii) Takeoff and departure phase ... flight maneuvers; (v) Instrument procedures; (vi) Landings and approaches to landings; (vii) Normal and abnormal procedures; (viii) Emergency procedures; and (ix) Postflight procedures. (2) A type rating for an airplane—multiengine course: (i) Preflight preparation; (ii) Preflight procedures; (iii) Takeoff…