INCIPIENT PHASE


Chapter 4—Slow Flight, Stalls, and Spins
Table of Contents Introduction Slow Flight Flight at Less than Cruise Airspeeds Flight at Minimum Controllable Airspeed Stalls Recognition of Stalls Fundamentals of Stall Recovery Use of Ailerons/Rudder in Stall Recovery Stall Characteristics Approaches to Stalls (Imminent Stalls)—Power-On or Power-Off Full Stalls Power-Off Full Stalls Power-On Secondary Stall Accelerated Stalls Cross-Control Stall Elevator Trim Stall Spins Spin Procedures Entry Phase Incipient Phase Developed Phase Recovery Phase Intentional Spins Weight and Balance Requirements	INCIPIENT PHASE The incipient phase is from the time the airplane stalls and rotation starts until the spin has fully developed. This change may take up to two turns for most airplanes. Incipient spins that are not allowed to develop into a steady-state spin are the most commonly used in the introduction to spin training and recovery techniques. In this phase, the aerodynamic and inertial forces have not achieved a balance. As the incipient spin develops, the indicated airspeed should be near or below stall airspeed, and the turn-and-slip indicator should indicate the direction of the spin. The incipient spin recovery procedure should be commenced prior to the completion of 360° of rotation. The pilot should apply full rudder opposite the direction of rotation. If the pilot is not sure of the direction of the spin, check the turn-and-slip indicator; it will show a deflection in the direction of rotation. Figure 4-10b. Spin-Fully Developed. Previous \| Next
Copyright 2012 PED Publication

Chapter 4—Slow Flight, Stalls, and Spins

Table of Contents
Introduction
Slow Flight
    Flight at Less than Cruise Airspeeds
    Flight at Minimum Controllable Airspeed
Stalls
    Recognition of Stalls
    Fundamentals of Stall Recovery
    Use of Ailerons/Rudder in Stall Recovery
    Stall Characteristics
    Approaches to Stalls (Imminent Stalls)—Power-On or Power-Off
    Full Stalls Power-Off
    Full Stalls Power-On
    Secondary Stall
    Accelerated Stalls
    Cross-Control Stall
    Elevator Trim Stall
Spins
    Spin Procedures
        Entry Phase
        Incipient Phase
        Developed Phase
        Recovery Phase
Intentional Spins
    Weight and Balance Requirements

INCIPIENT PHASE

The incipient phase is from the time the airplane stalls and rotation starts until the spin has fully developed. This change may take up to two turns for most airplanes. Incipient spins that are not allowed to develop into a steady-state spin are the most commonly used in the introduction to spin training and recovery techniques. In this phase, the aerodynamic and inertial forces have not achieved a balance. As the incipient spin develops, the indicated airspeed should be near or below stall airspeed, and the turn-and-slip indicator should indicate the direction of the spin.

The incipient spin recovery procedure should be commenced prior to the completion of 360° of rotation. The pilot should apply full rudder opposite the direction of rotation. If the pilot is not sure of the direction of the spin, check the turn-and-slip indicator; it will show a deflection in the direction of rotation.

Figure 4-10b. Spin-Fully Developed.

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