Vertical Instrument Maneuvers

CHAPTER ONE

BASIC INSTRUMENT PROCEDURES

Standard-Rate Turns

A standard rate turn (SRT) is any turn occurring at the rate of three degrees per second. When

beginning a SRT, a three-second lead is used, and the rate of turn is checked to ensure 30 of

heading change occurs in every 10 seconds. At 160 KIAS, approximately 27 angle of bank, and

a two-needle width deflection will be required for a SRT. Roll into the turn using the vertical

gyro indicator for both wing and nose attitude. The nose attitude is crosschecked with the

altimeter and vertical speed indicator. Angle of bank corrections will be made to maintain the

proper rate of turn (do not exceed 30 AOB). Add power as necessary to maintain airspeed.

One-Half Standard-Rate Turn

A one-half standard-rate turn (1/2 SRT) is a turn at the rate of one and one-half degrees per

second. When beginning a 1/2 SRT, a three-second lead is used and the rate of turn is checked

to ensure that 30 degrees of heading change occurs in every 20 seconds. To establish the turn,

roll into an angle of bank approximately equal to one-tenth of the indicated airspeed, and

maintain a one-needle width turn. The 1/2 SRT is similar to the SRT except that 30 of heading

change will require 20 seconds instead of 10 seconds.

NOTE

The rules of thumb stated above for determining the angle of bank

for SRTs and 1/2 SRTs are approximations based on typical

working altitudes (15,000 - 20,000 feet). Actual turn performance

is dependent on true airspeed; therefore, angle of bank

requirements for a given indicated airspeed will vary slightly with

altitude.

109. VERTICAL INSTRUMENT MANEUVERS

These maneuvers are designed to build the aircrew's scan through numerous transitions, and to

illustrate the precision required to perform the maneuvers correctly. The relationship between

"power controls altitude" and "the nose controls airspeed" will be reinforced by these maneuvers.

Constant Rate Climb And Descents

Constant rate climbs and descents will be flown at 180 KIAS and 1000 FPM rate of climb or

descent.

Constant Rate Climb

Establish the aircraft in straight and level flight at 180 KIAS (pattern cruise) trimmed up.

Three seconds prior to the 12 on the clock add power approximately 5% and raise the nose

to the climbing attitude (approximately 3 above the 180 KIAS level flight attitude or 5

degrees above the horizon bar). Maintain 180 KIAS by adjusting the nose attitude and

maintain 1000 fpm rate of climb by adjusting power as necessary. Climb for 2000 feet, or

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