Quantcast Common Errors - P-340_wch40070

 

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CHAPTER THREE
T-34C INSTRUMENTS
500­1000 FPM rate of descent on the VSI; maintain this positive rate of descent by slowly
easing the nose up as the airspeed dissipates. Trim right rudder and nose up gradually
throughout this transition for deceleration.
6.
Normally, you will reach the assigned level off altitude before reaching 120 knots. If so,
begin level off 50 feet prior to assigned altitude. Level off by leaving the PCL at 250 ft­lbs
until the airspeed approaches 120 knots; continue to trim and gradual nose up elevator as the
aircraft slows toward the slow cruise attitude. Two to three knots prior to 120, add power to
approximately 450 ft­lbs to maintain level flight. Retrim. If you reach 120 knots prior to
reaching the assigned level off altitude, continue the descent at 120 knots. Transition to level
flight 50 feet prior to the level off altitude by adding power to 450 ft­lbs and raising the nose to
the slow cruise attitude. The slow cruise attitude is approximatelydegrees nose up. Retrim.
NOTE
This transition to a level off can occur prior to the completion of
the 210º turn, during the one minute straight leg, or even after the
turn back to the reciprocal heading. It is dependent upon the
assigned level off altitude and the rate of descent. Both rapid scan
and planning ahead are required to keep everything under control.
7.
The practice penetration is complete when the aircraft is on the reciprocal of the
penetration heading at 120 knots and on assigned level off altitude.
8.
Common Errors
a.
Not maintaining attitude scan while performing Penetration Checklist approaching
penetration site. Losing or gaining altitude.
b.
Not trimming nose down during transition to 180­knot descent.
c.
Not raising nose slightly in 210º turn.
d.
Over controlling nose during level off; poor trim during last 1000 feet of descent.
e.
Not watching nose attitude during turn to reciprocal heading. The nose will tend to
fall through during this turn.
f.
Not timing out of the penetration turn.
g.
Not trimming for deceleration from 180 to 120 knots.
3-28 BASIC INSTRUMENTS FLIGHT PROCEDURES


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