SH.IV.D.S6
SkillMaintain powerplant and main rotor(s) (Nr) speed within normal limits.
From the FAA library
- Chapter 8: Flight Instruments › Airspeed Indicator Markings
most aircraft, this is the power-off stall speed at the maximum takeoff weight in the clean configuration (gear up, if retractable, and flaps up). • Upper limit of green arc (VN0)—the maximum structural cruising speed. Do not exceed this ... speed except in smooth air. • Yellow arc—caution range. Fly within this range only in smooth air and then only with caution. • Red line (VNE)—never exceed speed. Operating above this speed is prohibited since it may result in damage…
- Glossary › Pilot’s Operating Handbook/Airplane Flight Manual
visibility, distance from cloud, and ceiling meeting or exceeding the minimums specified for VFR. VLE. Landing gear extended speed. The maximum speed at which an airplane can be safely flown with the landing gear extended. VLO. Landing gear operating speed ... maximum speed for extending or retracting the landing gear if using an airplane equipped with retractable landing gear. VMC. Minimum control airspeed. This is the minimum flight speed at which a light, twin-engine airplane can be satisfactorily controlled when…
- Chapter 4. Air Traffic Control › Section 4. ATC Clearances and Aircraft Separation › 4-4-12. Speed Adjustments
Instruct the pilot to “resume published speed.” Resume published speed is issued to terminate a speed adjustment where speed restrictions are published on a charted procedure. NOTE-When instructed to “comply with speed restrictions” or to “resume published speed ... anticipates pilots will begin adjusting speed the minimum distance necessary prior to a published speed restriction so as to cross the waypoint/fix at the published speed. Once at the published speed, ATC expects pilots will maintain the published speed until…
- Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Landing Performance
altitude. Proper accounting of density altitude is necessary to accurately predict landing distance. The effect of proper landing speed is important when runway lengths and landing distances are critical. The landing speeds specified in the AFM/POH are generally the minimum ... safe speeds at which the aircraft can be landed. Any attempt to land at below the specified speed may mean that the aircraft may stall, be difficult to control, or develop high rates of descent. On the other hand…
- Chapter 11: Helicopter Emergencies and Hazards › Autorotation
Following this general procedure of fitting airspeed and rotor rpm to existing conditions, a pilot can achieve approximately the same glide angle in any set of circumstances, and thereby estimate the touchdown point accurately. Figure 11-1. During an autorotation ... upward flow of relative wind permits the main rotor blades to rotate at their normal speed. In effect, the blades are “gliding” in their rotational plane. It is important that pilots experience autorotations from various airspeeds. This provides better understanding…
- Chapter 3: Mathematics in Aviation Maintenance › Ratio
teeth. The gear ratio is 8:28. Using 7 as the LCD, 8:28 becomes 2:7. Speed ratio is when two gears are used in an aircraft component; the rotational speed of each gear is represented as a speed ... ratio. As the number of teeth in a gear decreases, the rotational speed of that gear increases, and vice-versa. Therefore, the speed ratio of two gears is the inverse (or opposite) of the gear ratio. If two gears have…