Flight Training Instruction - Cnatra - U.S. Navy

CHAPTER FIVE T-6B PRIMARY INSTRUMENT NAVIGATION
510. APPROACH PATTERN
The Approach pattern approximates the procedures required to execute an Instrument approach
over a NAVAID.
Procedure.
1. The maneuver is started at 200 KIAS, straight and level flight on a cardinal heading.
2. Slow toward 150 KIAS by reducing power to 20% torque. With the power reduction,
slight rudder / rudder trim will be required. Nose up trim will also be required to maintain
altitude.
3. Upon reaching 150 KIAS, add power to approximately 33% torque in order to maintain
150 KIAS in level flight. Re-trim
4. Make a SRT to the right for 90° of heading change while maintaining altitude. Lead the
rollout using the one-third rule.
5. After completing the turn, start the clock and begin timing for two minutes.
6. Descend for 1000’ by reducing the torque to 15%. The rate of descent should be
approximately 1000 FPM at 150 KIAS.
7. 100’ prior to level-off altitude, slowly add power to 33% torque in order to maintain 150
KIAS at the level-off altitude.
8. At the end of two minutes timing, begin a left SRT for a heading change of 210°. Add
power and trim up as required in order to maintain 150 KIAS.
9 Roll wings level after 210° of heading change, commence a descending transition to BAC:
a. Reducing power to 15% torque, add slight left rudder pressure and trim to
compensate for the power reduction. Maintain altitude in order to expedite the
deceleration of the aircraft.
b. Check airspeed below 150 KIAS, lower the gear, set flaps to TO, and perform the
Before Landing Checklist. As the flaps are lowered, the aircraft will have the
tendency to gain altitude. To compensate for this added lift, pitch slightly nose down
in order to maintain level flight.
c. As the aircraft slows, trim right rudder and nose up in order to maintain heading and
altitude. Allow airspeed to bleed off towards 120 KIAS.
d. At 120 KIAS, stop trimming up and allow the aircraft to descent for 1000’.
5-12 BASIC INSTRUMENT PROCEDURES