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T-34C INSTRUMENTS
CHAPTER THREE
NOTE
Transition from 150 KIAS to 120 KIAS by reducing power to 300 ftlbs.
Retrim.
3.
Common Errors
a.
Not using a threesecond lead.
b.
Not relying on the wing attitude instrument (turn needle) but trying to fly
performance instruments. The turn needle is one of the most accurate instruments in
the aircraftbelieve it. Remember, the performance checks are only readable every
30.
c.
Unbalanced flight.
d.
Overcorrecting AOBnever greater than 20 or less than 10 for a OneHalf SRT,
never greater than 30 AOB or less than 15 AOB for a SRT.
e.
Improper nose attitude, losing altitude.
305.
CONSTANT AIRSPEED CLIMBS AND DESCENTS
1.
Nearly all climbs and descents are performed at a constant airspeed or at least some climb
schedule. These particular maneuvers are performed in Vertical Performance Speed (VPS)
during initial instruction and are used as a basis for rate climbs and descents. The purpose of
these maneuvers is to emphasize that nose attitude controls airspeed in climbs and descents.
These descents and climbs are continued for 1000 feet of altitude change, followed by a
transition to a level off and a constant heading is maintained throughout the maneuver.
Obviously, the nose attitude crosscheck instrument is the airspeed indicator. The climbs and
descents are started on any numbered heading and thus the RMI remains the wing attitude
crosscheck instrument. Altimeter and VSI show performance. Utilize the PAT principle for all
transitions to climbs and descents.
Enter VPS from normal cruise by reducing power to 300 ftlbs. Trim right rudder, nose up as
the aircraft decelerates in order to maintain attitude and heading throughout the transition.
Approaching 130 KIAS, adjust power to maintain 130 KIAS, and retrim. The VPS power setting
is approximately 550 ftlbs; the VPS level flight nose attitude is approximately 1 nose up.
2.
Climbs
a.
Increase power smoothly towards 850 ftlbs as you add a corresponding amount of
right rudder. Use peripheral vision to set power.
b.
As the power is being added, raise the nose to the VPS climbing attitude of
approximately 4 nose up.
BASIC INSTRUMENTS FLIGHT PROCEDURES 3-15


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