text: static stability at high power, high CL, and 
  low 4. 
  It is generally true that any airplane 
  will experience the lowest level of static longi- 
  tudinal stability under these conditions. Be- 
  cause of the greater magnitude of both direct 
  and indirect power effects, the propeller pow- 
  ered airplane usually experiences a greater 
  effect than the jet powered airplane. 
  
  at the inlet of a jet engine contributes a similar 
  destabilizing effect when the inlet 
  is ahead 
  of the c,g. As with the propeller, the magni- 
  tude of the stability contribution 
  is largest at 
  high thrust and low flight speed. 
  
  An additional effect on stability can be from 
  the extension of high lift devices. The high 
  lift devices tend to increase downwash at the 
  tail and reduce the dynamic pressure at the tail, 
  both of which are destabilizing. However, 
  the high lift devices may prevent an unstable 
  contribution of the wing at high CL. While 
  the effect of high lift devices depends on the 
  airplane configuration, the usual effect is de- 
  stabilizing. Hence, the airplane may experi- 
  ence the most critical 
  forward neutral point 
  during the power approach or waveoff. Dur- 
  ing these conditions of flight the static stability 
  is usually the weakest and particular attention 
  must be given to precise control of the air- 
  plane. The power-on neutral point may set 
  the most aft limit of c.g. position. 