Position Instruments

CHAPTER ONE

BASIC INSTRUMENT PROCEDURES

15.0 UNITS AOA

TAKE OFF

8.5 UNITS AOA

CLIMB

6.5 UNITS AOA (MAX RANGE)**

CRUISE

13.0 UNITS AOA (MAX ENDURANCE)

SLOW CRUISE

8.0 UNITS AOA

DESCENT

15.0 UNITS AOA

APPROACH

13.0 UNITS AOA

MAX RANGE GLIDE

** In the "approach" region of an angle of attack indicator, one unit of AOA is the

equivalent of four or five knots of airspeed change, but in the "cruise" region (which

varies with aircraft model/type), it may take over fifty knots of airspeed change to

produce one indicated unit of AOA change. An angle of attack indicator is therefore

inferior to an airspeed indicator or a Mach indicator in flying maximum range

airspeeds.

Clock. An elapsed-time analog clock is installed on each instrument panel. This clock is a

conventional 12-hour, 8-day clock with a winding and setting stem located on its lower left

corner. Because the clock is designed to be wound only once every 8 days, it is commonly

referred to as an "8 Day Clock". Over-winding can damage the clock. A start-stop pushbutton,

located at the upper right corner, controls an arrowed hand and a sweep second hand that indicate

the elapsed time in minutes and seconds (a common student mistake is to attempt to use the

upper right instrument post light as a start-stop pushbutton).

NOTE

During timed ("rated") instrument maneuvers (such as standard

rate turns, constant rate climbs and descents, etc.) the progress of

the aircraft through the maneuver is timed by reference to the 8-

day clock. In order that a Simulator Instructor might monitor and

coach a student during these maneuvers, it is essential the clocks

referenced by the student and the instructor have second hands

which are moving together ("synchronized"). To synchronize the

second hands, the elapsed second hand on both clocks are stopped,

and started together when the instructor announces, "Standby,

standby, HACK".

Position Instruments. The aircraft position is determined by a third group of instruments

termed the "position instruments". These instruments include the altimeter, BDHI, course

indicator, TACAN needle, and DME. The position instruments convey the aircraft location in

space. By knowing the aircraft's position, the aircrew can determine what control changes are

required to achieve desired aircraft performance.

ALTIMETERS. The 2F101 flight simulator and the T-2C aircraft are equipped with

different altimeters. The 2F101 incorporates a replica of an AAU-19/A Servo Altimeter. The

T-2C aircraft is equipped with an AAU-34B/A Solid State Barometric Altimeter.

1-8 BASIC INSTRUMENT PROCEDURES