Instrument Rating – Helicopter › V. Navigation Systems › Task A. Intercepting and Tracking Navigational Systems and DME Arcs

IH.V.A.S5

Skill

Maintain airspeed ±10 knots, altitude ±100 feet, and selected headings ±5°.

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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 Procedures Handbook p. 6-7
Chapter 6: Airborne Navigation Databases › Path and Terminator Legs
distance that is from a specific database DME NAVAID. [Figure 6-15] Figure 6-14. Course to an altitude or CA leg. Figure 6-15. Course to a DME distance of CD leg. Figure 6-16. Course to an intercept ... database VOR NAVAID. [Figure 6-17] Figure 6-18. Arc to a fix or AF leg. Figure 6-19. Heading to an altitude termination or VA leg. • Arc to a fix or AF leg—defines a track over the ground…
Instrument Flying Handbook p. 8-12
Chapter 8: Helicopter Attitude Instrument Flying › Straight Descents (Constant Airspeed and Constant Rate) › Entry
Straight Descents (Constant Airspeed and Constant Rate) A descent may be performed at any normal airspeed the helicopter can attain, but the airspeed must be determined prior to entry. The technique is determined by the type of descent, a constant ... airspeed, or a constant rate. Entry If airspeed is higher than descending airspeed, and a constant airspeed descent is desired, reduce power to a descent power setting and maintain a constant altitude using cyclic pitch control. This slows the helicopter…
Instrument Flying Handbook p. 8-8
Chapter 8: Helicopter Attitude Instrument Flying › Turn Indicator › Power Control During Straight-and-Level Flight
with counter-rotating rotors. To counteract the yawing tendency of the helicopter, apply pedal trim during power changes. To maintain a constant altitude and airspeed in level flight, coordinate pitch attitude and power control. The relationship between altitude and airspeed ... determines the need for a change in power and/or pitch attitude. If the altitude is constant and the airspeed is high or low, change the power to obtain the desired airspeed. During the change in power, make an accurate interpretation…
Instrument Flying Handbook p. 7-5
Chapter 7, Section I: Airplane Basic Flight Maneuvers › Straight-and-Level Flight › Vertical Speed Indicator (VSI)
Figure 7-10. Pitch correction, less than 100 feet—one-half bar low to correct altitude error. When using the VSI as a rate instrument and combining it with the altimeter and attitude indicator to maintain level flight, a pilot ... should know that the amount the altimeter needle moves from the desired altitude governs the rate that should be used to return to that altitude. A rule of thumb is to make an attitude change that results in a vertical…
Aeronautical Information Manual p. 1-1-10
Chapter 1. Air Navigation › Section 1. Navigation Aids › 1-1-8. NAVAID Service Volumes
Designator Altitude and Range Boundaries T (Terminal) From 1,000 feet ATH up to and including 12,000 feet ATH at radial distances out to 25 NM. L (Low Altitude) From 1,000 feet ATH up to and including ... feet ATH at radial distances out to 40 NM. H (High Altitude) From 1,000 feet ATH up to and including 14,500 feet ATH at radial distances out to 40 NM. From 14,500 ATH up to and including…