T-34C OUT-OF-CONTROL FLIGHT
Recoveries initiated during the reversal phase were evaluated by NATC to determine the
optimum recovery technique to be used in the event of intentional or inadvertent progressive spin
entry. Both neutral control and NATOPS anti-spin control techniques were used to effect
recoveries initiated up to 2 1/2 turns after the reversal of spin direction. Recovery using the
NATOPS anti-spin technique was slightly more rapid than use of neutral controls, but was also
qualitatively evaluated as having the potential for entry into a second progressive spin. In the
event of inadvertent progressive spin entry, neutralization of the controls will result in
sufficiently rapid recovery without disorientation effects to the pilot. The neutral control
technique should be applied while assessing the aircraft's flight condition. In the event recovery
has not occurred within two turns, applying the proper NATOPS anti-spin controls will affect a
rapid recovery. Minimum entry altitude for a Progressive Spin maneuver is 9000 feet AGL.
Both the Anti-Spin Recovery Procedures listed below and the
NATOPS OCF Recovery Procedures should be practiced by the
Perform the procedures for a normal, erect spin entry in either direction.
After two turns, smoothly apply full rudder opposite the direction of turn needle
deflection while continuing to hold full back stick.
Continue to hold these control inputs until the aircraft has stabilized in a Steady-State
Spin opposite the initial spin direction. Recover in accordance with the NATOPS
Out-of-Control Recovery Procedures or proceed as follows:
Apply full rudder opposite the turn needle.
Position the stick forward of neutral (ailerons neutral).
Neutralize the controls as rotation stops.
Recover from the ensuing unusual attitude.
203. CONTROL RELEASE SPIN
Discussion. This maneuver is introduced to thoroughly familiarize the IUT with the erect
spin characteristics and cockpit indications of the T-34C. In this maneuver, the aircraft is
established in a Steady-State Spin in either direction and the controls subsequently released. The
rudder pedals will float near the neutral position and the stick will remain near the full aft
position. AOA, airspeed, altimeter, turn needle, and VSI are scanned for erect spin indications.
UNUSUAL ATTITUDES AND OUT-OF-CONTROL FLIGHT 2-3