CH.I.G.K2

From the FAA library

• Helicopter Flying Handbookp. 11-16
  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…

• Helicopter Flying Handbookp. 11-21
  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…

• Helicopter Flying Handbookp. 11-22
  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…

• Helicopter Flying Handbookp. 11-22
  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…

• Aeronautical Information Manualp. 6-4-1
  Chapter 6. Emergency Procedures › Section 4. Two-way Radio Communications Failure › 6-4-1. Two-way Radio Communications Failure

  Section 4. Two-way Radio Communications Failure 6-4-1. Two-way Radio Communications Failure a. It is virtually impossible to provide regulations and procedures applicable to all possible situations associated with two-way radio communications failure. During ... radio communications failure, when confronted by a situation not covered in the regulation, pilots are expected to exercise good judgment in whatever action they elect to take. Should the situation so dictate they should not be reluctant…

• Instrument Procedures Handbookp. 2-47
  Chapter 2: En Route Operations › Communication Failure

  reported to ATC, as this condition is known and not an anomaly. See also AIM 1-1-13. Communication Failure Two-way radio communication failure procedures for IFR operations are outlined in 14 CFR Part 91, § 91.185. Unless otherwise authorized ... pilots operating under IFR are expected to comply with this regulation. Expanded procedures for communication failures are found in the Aeronautical Information Manual (AIM). Pilots can use the transponder to alert ATC to a radio communication failure by squawking code…