T-34C OUT-OF-CONTROL FLIGHT
After about two turns, the rate of rotation stabilizes and, because of high drag at the higher AOA,
the rate of descent stabilizes to about 9000 - 12,000 fpm or 360 - 600 feet per turn, depending on
direction. The aircraft is now in a Steady-State Spin from which it will not recover without
stopping the rotation and breaking the stall. Recovery from an erect spin is accomplished in the
Perform the first four steps of NATOPS OCF recovery to confirm if aircraft is truly in a spin. If
Gear/flaps - UP,
Rudder - Full OPPOSITE turn needle,
Stick - FORWARD OF NEUTRAL (erect spin) NEUTRAL (inverted spin),
Controls - Neutralize when rotation stops, and
Recover from unusual attitude.
Application of spin recovery controls when not in a Steady-
State Spin (as verified by AOA, airspeed, and turn needle) MAY
further aggravate the OCF condition.
"Popping" down elevator CAN result in the spin going
inverted in some airplanes. A "smooth" forward movement of the
stick is best for most light aircraft.
If recovery from an erect spin does not occur within two turns after applying recovery controls,
confirm cockpit indications of AOA, airspeed, turn needle for a Steady-State Spin, and visually
confirm proper spin recovery controls are applied. If no indication of recovery is evident, adding
maximum allowable power while maintaining proper spin recovery controls will enhance
recovery from an erect, Steady-State Spin in either direction. Spin recoveries using anti-spin
controls and power will NOT appreciably increase rate of descent (while maintaining stalled
AOA). However, significant altitude loss will result during the ensuing nose-low recovery.
Power application to recover from spins should be used in emergency situations only. Upon
recovery, controls should be neutralized expeditiously and power reduced to idle to minimize
altitude loss and rapid airspeed buildup.
1-8 INTRODUCTIONS AND SPINS