Flight Instructor for Powered-Lift Category › XIII. Basic Instrument Maneuvers › Task C. Constant Airspeed Descents

IL.XIII.C.S3

Skill

Level off at the assigned altitude and maintain altitude ±100 feet, heading ±10°, and airspeed ±10 knots.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Instrument Flying Handbook p. 8-13
Chapter 8: Helicopter Attitude Instrument Flying › Straight Descents (Constant Airspeed and Constant Rate) › Level Off
Level Off The level off from a constant airspeed descent may be made at descending airspeed or at cruise airspeed, if this is higher than descending airspeed. As in a climb level off, the amount of lead depends ... rate of descent and control technique. For a level off at descending airspeed, the lead should be approximately 10 percent of the vertical speed. At the lead altitude, simultaneously increase power to the setting necessary to maintain descending airspeed…
Instrument Flying Handbook p. 7-8
Chapter 7, Section I: Airplane Basic Flight Maneuvers › Straight-and-Level Flight › Turn-and-Slip Indicator (Needle and Ball)
forces of gravity, drag, and inertia to determine airplane performance. Power control must be related to its effect on altitude and airspeed, since any change in power setting results in a change in the airspeed or the altitude ... airplane. At any given airspeed, the power setting determines whether the airplane is in level flight, in a climb, or in a descent. If the power is increased in straight-and-level flight and the airspeed held constant, the airplane…
Instrument Flying Handbook p. 8-8
Chapter 8: Helicopter Attitude Instrument Flying › Turn Indicator › Power Control During Straight-and-Level Flight
airspeed is changing, adjust the pitch attitude to maintain a constant altitude. A constant heading should be maintained throughout the change. As the desired airspeed is approached, adjust power to the new cruising power setting and further adjust pitch attitude ... maintain altitude. The instrument indications for straight-and-level flight at normal cruise and during the transition from normal cruise to slow cruise are illustrated in Figures 8-9 and 8-10. After the airspeed stabilizes at slow cruise…
Instrument Flying Handbook p. 7-42
Chapter 7, Section II: Airplane Basic Flight Maneuvers › Straight-and-Level Flight › Airspeed Changes in Straight-and-Level Flight
Accordingly, knowledge of the power settings and trim changes associated with different combinations of airspeed, gear, and flap configurations reduces instrument cross-check and interpretation problems. [Figure 7-60] For example, assume that in straight-and-level flight instruments indicate ... knots with power at 23 "Hg manifold pressure/2,300 revolutions per minute (rpm), gear and flaps up. After reduction in airspeed, with gear and flaps fully extended, straight-and-level flight at the same altitude requires 25 "Hg manifold pressure/2…
Instrument Flying Handbook p. 7-50
Chapter 7, Section II: Airplane Basic Flight Maneuvers › Straight Climbs and Descents › Leveling Off
Leveling Off When leveling off from a descent with the intention of returning to cruise airspeed, first start by increasing the power to cruise prior to increasing the pitch back toward the level flight attitude. A technique used to determine ... soon to start the level off is to lead the level off by an altitude corresponding to 10 percent of the rate of descent. For example, if the aircraft is descending at 1,000 fpm, start the level off 100…