Common Errors - P-340

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.

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 approximately 1 degrees nose up. Retrim.

NOTE

This transition to a level off can occur prior to the completion of

the 210 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.

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.

Common Errors

Not maintaining attitude scan while performing Penetration Checklist approaching

penetration site. Losing or gaining altitude.

Not trimming nose down during transition to 180knot descent.

Not raising nose slightly in 210 turn.

Over controlling nose during level off; poor trim during last 1000 feet of descent.

Not watching nose attitude during turn to reciprocal heading. The nose will tend to

fall through during this turn.

Not timing out of the penetration turn.

Not trimming for deceleration from 180 to 120 knots.

3-28 BASIC INSTRUMENTS FLIGHT PROCEDURES