TD 19

Question 1

Main Drive Shaft Failure

Answer 1

A failure of the main driveshaft will be indicated by a sudden increase in engine RPM, decrease in rotor RPM, a left yaw, activation of the low RPM audio, and illumination of the ROTOR RPM light. A transient overspeed of N1 and N2 may occur, but will stabilize. In the event of a main driveshaft failure:

WARNING
The engine must remain in operation to provide power to the tail rotor. Failure to maintain engine power will result in loss of aircraft control during autorotation. Adjust throttle as required to maintain engine RPM within normal limits.

    1. Autorotate- Establish a Power On autorotation
    2. Emergency Shutdown- Accomplish after landing.

Question 2

Clutch Fails to Disengage

Answer 2

A clutch failing to disengage in flight will be indicated by the rotor RPM decaying with the engine RPM as the throttle is reduced to the engine idle position when entering an autorotational descent. This condition results in total loss of autorotational capability. If a failure occurs:

    1. Throttle- OPEN
    2. Land as soon as POSSIBLE

Question 3

Smoke and Fume Inhalation

Answer 3

Ventilation of the cabin to protect occupants from the effects of toxic fumes, smoke, etc, shall be immediately performed as follows:

    1. Vents- OPEN
    2. COCKPIT AND CABIN WINDOWS- Open for maximum ventilation.

Question 4

Flight Restrictions at Low Gs

Answer 4

Flight at less than +.5g is prohibited.

Question 5

Uncommanded Flight Control Input Malfunctions

Answer 5

Uncommanded flight control input malfunctions may be indicated through uncommanded lateral or longitudinal cyclic movements. The magnitude of the event may range from mild to severe. The duration of the event may range from one to several seconds. These conditions should not be mistaken for hydraulic power failure. In the event of an uncommanded flight control input malfunction:

    1. Collective- increase if near the ground to prevent main or tail rotor ground contact.
    2. Pedal- apply in the direction of turn.
    3. Direct assistance with flight control inputs to level the aircraft.
    4. Land as soon as POSSIBLE.