FH.II.F.R1
Risk managementDetection of system malfunctions or failures.
From the FAA library
- Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Antitorque System Failure
following the manufacturer’s recommendations regarding operating limits and procedures and periodic maintenance and inspections, many system and equipment failures can be eliminated. Certain malfunctions or failures can be traced to some error on the part of the pilot; therefore ... appropriate flying techniques and use of threat and error management may help to prevent an emergency Antitorque System Failure Antitorque failure usually falls into one of two categories. One is failure of the power drive portion of the tail rotor…
- Chapter 11: Helicopter Emergencies and Hazards › Recovery Technique (Uncontrolled Right Yaw) › Governor or Fuel Control Failure
Governor or Fuel Control Failure Governors and fuel control units automatically adjust engine power to maintain rotor rpm when the collective pitch is changed. If the governor or fuel control unit fails, any change in collective pitch requires manual adjustment ... throttle to maintain correct rpm. In the event of a high side failure, the engine and rotor rpm tend to increase above the normal range due to the engine being commanded to put out too much power…
- Chapter 11: Helicopter Emergencies and Hazards › Recovery Technique (Uncontrolled Right Yaw) › Main Drive Shaft or Clutch Failure
Main Drive Shaft or Clutch Failure The main drive shaft, located between the engine and the main rotor transmission, provides engine power to the main rotor transmission. In some helicopters, particularly those with piston engines, a drive belt is used ... instead of a drive shaft. A failure of the drive shaft clutch or belt has the same effect as an engine failure because power is no longer provided to the main rotor and an autorotation must be initiated. There…
- Chapter 11: Helicopter Emergencies and Hazards › Vortex Ring State
Common Errors 1. Failure to use sufficient proper antitorque pedal when power is reduced. 2. Failure to stop all sideward or backward movement prior to touchdown. 3. Failure to apply up-collective pitch properly, resulting in a hard touchdown. Failure ... touch down in a level attitude. Failure to roll the throttle completely to idle. 6. Failure to hover at a safe altitude for the helicopter type, atmospheric conditions, and the level of training/ proficiency of the pilot. 7. Failure…
- Chapter 11: Helicopter Emergencies and Hazards › Recovery Technique (Uncontrolled Right Yaw) › Hydraulic Failure
Hydraulic Failure Many helicopters incorporate the use of hydraulic actuators to overcome high control forces. A hydraulic system consists of actuators, also called servos, on each flight control; a pump, which is usually driven by the main rotor transmission ... during normal conditions. A pressure indicator in the cockpit may be installed to monitor the system. An impending hydraulic failure can be recognized by a grinding or howling noise from the pump or actuators, increased control forces and feedback…
- Chapter 11: Emergency Operations › Analog Instrument Failure
Pilots can attempt to troubleshoot alternator failure by following the established alternator failure procedure published in the POH/ AFM. If the alternator cannot be reset, advise ATC of the situation and inform them of the impending electrical failure. Figure ... Emergency instrumentation available to the pilot on electronic flight instrumented aircraft. Analog Instrument Failure A warning indicator, or an inconsistency between indications on the attitude indicator and the supporting performance instruments, usually identifies system or instrument failure. Aircraft control must…