specific airplane and the particular nature of 
the slipstream effects. The use of power during 
the spin recovery of a jet powered airplane 
induces no significant or helpful flow but does 
offer the possibility of a severe compressor 
stall and adverse gyroscopic moments. Since 
the airplane is at high angle of attack and 
sideslip, the flow at the inlet may be very 
poor and the staI1 limits considerably reduced. 
These items serve to point out possible dif- 
ferences in technique required for various con- 
figurations. The spin recovery specific for 
31.1