PH.IV.E.R2
Risk managementConditions leading to loss of tail rotor/antitorque effectiveness.
From the FAA library
- Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
helicopters. The respect and discipline pilots exercise in following flight manuals should also be applied to understanding aerodynamic conditions. If flight envelopes are exceeded, the end results can be catastrophic. LTE is an aerodynamic condition and is the result ... control margin deficiency in the tail rotor. It can affect all single-rotor helicopters that utilize a tail rotor. The design of main and tail rotor blades and the tail boom assembly can affect the characteristics and susceptibility…
- Chapter 11: Helicopter Emergencies and Hazards › Low Rotor RPM and Rotor Stall
Other causes of a power-on low rotor rpm condition include the pilot rolling the throttle the wrong way in helicopters not equipped with a governor or a governor failure in helicopters so equipped. As the rpm decreases, the amount ... horsepower the engine can produce also decreases. Engine horsepower is directly proportional to its rpm, so a 10 percent loss in rpm due to overpitching, or one of the other scenarios above, will result in a 10 percent loss…
- Chapter 12: Night Operations › Helicopter Night VFR Operations
Helicopter Night VFR Operations While ceiling and visibility significantly affect safety in night VFR operations, lighting conditions also have a profound effect on safety. Even in conditions in which visibility and ceiling are determined to be visual meteorological conditions ... night may be compromised. The ability to discern these objects and terrain is referred to as the “seeing condition,” and is related to the amount of natural and man-made lighting available, and the contrast, reflectivity, and texture of surface…
- Chapter 3: Helicopter Flight Controls › Antitorque Pedals
This results in maximum downward deflection of the rotor blade in front of the helicopter and maximum upward deflection behind it, causing the rotor disk to tilt forward. Figure 3-4. The cyclic pitch control may be mounted vertically between ... from a single cyclic located in the center of the helicopter. The cyclic can pivot in all directions. Antitorque Pedals The antitorque pedals, located on the cabin floor by the pilot’s feet, control the pitch and therefore the thrust…
- Chapter 10: Advanced Flight Maneuvers › Slope Operations › Technique
Slope Takeoff A slope takeoff is basically the reverse of a slope landing. [Figure 10-7] Conditions that may be associated with the slope, such as turbulence and obstacles, must be considered during the takeoff. Planning should include suitable forced ... helicopter should attain a level attitude as the cyclic reaches the neutral position. At the same time, use antitorque pedal pressure to maintain heading and throttle to maintain rpm. With the helicopter level and the cyclic centered, pause momentarily…
- Chapter 13: Effective Aeronautical Decision-Making › Aeronautical Decision-Making (ADM) › Scenario
about to end, the pilot based his time required to complete the flight on ideal conditions, and did not take into consideration the possibility of delays. This led to a feeling of being time limited. Even after determining the landing ... determination to continue. After landing, and waiting 30 minutes longer than planned, the pilot observed the outer effects of the thunderstorm, yet still attempted to depart. The pilot dispelled any available options by thinking the only option…