BY ORDER OF THE SECRETARY OF THE AIR FORCE AIR FORCE ...

AFMAN 11-217V1 3 JANUARY 2005 51
the vertical velocity indicator and altimeter to ensure you are still climbing. While the
aircraft is below airspeeds required for accurate altitude or VVI readings, the radar
altimeter may provide the most reliable source of climb information. A rapid crosscheck
must be started at the time the aircraft leaves the ground and should include all available
instruments in order to provide you a smooth transition to coordinated flight.
4.2.3.1. Marginal power conditions may prevent establishing a significant climb prior
to passing through effective translational lift (ETL). In such cases, ensure the takeoff
run is clear of obstacles before pulling power in a dusty area, then perform a marginal
power takeoff in accordance with the flight manual (using instrument references as
required) until reaching a speed that will allow a climb. Consider increasing power
margin or aborting the mission if obstacle clearance can’t be assured while in IMC.
Figure 4.2. The Instrument Takeoff.
4.3. Individual Maneuvers.
4.3.1. Straight and Level Flight. Straight and level unaccelerated flight consists of
maintaining desired altitude, heading, and airspeed. Use power control to maintain or
adjust the altitude; use pitch attitude to maintain or adjust the airspeed; and use bank
control to maintain or adjust the heading.
4.3.1.1. Establishing And Maintaining An Altitude. Establishing or maintaining an
altitude is accomplished by referring to the altimeter and VVI for actual aircraft
performance and adjusting the power or aircraft attitude to obtain or maintain the
desired altitude. A knowledge of the approximate power required to establish a
desired altitude or rate of change of vertical velocity will aid in making power
adjustments. After the approximate power setting is established, a crosscheck of the
altimeter and the VVI will indicate if subsequent power adjustments are required.
You should make it a point to learn and remember the approximate power settings for
your aircraft at various altitudes, airspeeds, and configurations used throughout a
normal mission.