Emergency Procedures

Immediate Actions Emergency Actions: Note

After emergency action

Land as soon as possible

Land as soon as practicable

Autorotate

Emergency Shutdown

Autorotational Airspeeds: Minimum rate of descent and maximum glide distance

Engine failure at a hover

Partial or complete power loss: WARNING

Engine failure: low altitude/low airspeed or cruise

Engine restart during flight: caution

Partial or complete power loss:
If the power loss is total, the _________ warning light will activate and an intermittent (warbling) tone will be heard.

_____to_____KIAS is recommended during the descent. Under ideal conditions, approx. ___minute is required to regain powered flight from the time the attempted start is begun.

Engine restart during flight: If the decision is made to attempt an in-flight start:

Engine compressor stall may be characterized by a _______or a series of loud______, severe______and a rapid rise in ______.

Should engine compressor stall occur:

Engine overspeed will be indicated by a ________yaw, rapid increase in both ____and _____RPM, and an increase in _____and _____noise.

If an engine overspeed is experienced:

Engine overspeed: If RPM cannot be controlled by throttle adjustment:

If an engine underspeed occurs, the collective must be adjusted _______ to maintain_____RPM within limits.

Engine underspeed: If powered flight with rotor in the green can be accomplished:

Engine underspeed: An engine underspeed below 90% results in rotor RPM decay below minimum safe limits. Should this occur:

If engine surges are experienced:

If engine surges are not controlled with other measures/adjustments:

WARNING
Fuel boost pump failure: Operation with both fuel boost pumps inoperative is ___ authorized. Due to possible fuel sloshing in unusual attitudes and out of trim conditions and one or both fuel boost pumps inoperative, the unusable fuel is ______gallons.

With one or both fuel pumps inoperative:

Low inlet pressure/engine icing: Caution

Low inlet pressure: LOW INLET PRESSURE CAUTION LIGHT ON:

Engine icing note: When anti-icing system is ON, TOT will______for same power setting.

Low engine oil pressure/high engine oil temperature. If the engine oil pressure is below___PSI or the temp is above ___C.

Low engine oil pressure/high engine oil temp-NOTE. If engine oil pressure is ____or ____ and the oil temp is ____or ____, a sever leak may be present.

Air conditioning malfunction. The type of malfunction that would create a potential emergency involves a failure of the compressor or drive belt that would cause a noticeable _______or________.

FIXED PITCH SETTING is a malfunction involving a loss of control resulting in a fixed pitch setting. Whether the nose of the helicopter yaws left or right is dependent upon the amount of pedal applied at the time of malfunction. Regardless of pedal setting at the time of malfunction, a varying amount of tail rotor thrust will be delivered at _____ _____during flight.

Fixed pitch settings-Reduced power(low torque).

Indications: The nose of the helicopter will turn ____when power is applied.

Fixed pitch settings-Reduced power(low torque)

Procedure: If helicopter control can be maintained in powered flight, the best solution is to maintain control with _____and accomplish a ______landing as soon as _______. Use airspeed, _______, and collective to reduce the sideslip angle at touchdown.

If helicopter control cannot be maintained, ______the throttle immediately and accomplish an autorotational landing.

Fixed pitch settings-Increased power (high torque)

Indications: The nose of the helicopter will turn_____when power is reduced.

Fixed pitch settings: Increased power (high torque)

Procedures:

a.) Maintain control with power and _____. (Between _____ and ____ knots.)

b.) Continue _____flight to a suitable landing area where a ____ landing can be accomplished.

c.) Execute a _____landing with _____ and a touchdown speed which will minimize sideslip. Use ______ and collective, as necessary, to control sideslip and heading at touchdown.

Fixed pitch settings-At a hover

Indication: Helicopter _______cannot be controlled with pedals.

Procedure: Fixed pedal-________

Loss of tail rotor components-
The severity of this situation is dependent upon the amt. of _____lost. Any loss of this nature will result in a _____center of gravity shift, requiring _____cyclic. A full _____descent and landing should be acccomplished with a ______type termination if to an improved surface, or ______ground run if to an unimproved surface. Landing should be accomplished in a level attitude.

Loss of tail rotor components:

Indications:

1.) Varying degrees of ______yaw depending on power applied and airspeed at the time of failure.

2.) ______ CG shift.

Loss of tail rotor components-Procedures:
1.) ______________________
2.) Maintain airspeed above ______airspeed.
3.) If run-on landing is possible, complete autorotation with touchdown airspeed _________ for directional control.
4.) If run-on landing is not possible, start to decelerate from about ____ft. altitude, so that forward groundspeed is at a _____. When the helicopter reaches _____to____ft; execute the touchdown with a _____collective pull just prior to touchdown in a _____attitude with minimum ground run.

Loss of tail rotor effectiveness: This is a situation involving a loss of effectiveness tail rotor thrust without a break in the drive system which cannot be stopped with full _____pedal application. If LTE is experienced, simultaneously:

1.)
2.)
3.)
4.) If spin cannot be stopped and crash is imminent, an autorotation may be the best course of action. Maintain full ____pedal until the spin stops, then adjust to maintain heading.

Loss of tail rotor effectivness: WARNING

Collective ______will aid in arresting the yaw rate; however, if a rate of descent has been est., collective reduction may increase the rate of descent to an excessive value. The resultant large and rapid increase in collective to prevent ground or obstacle contact may further increase the yaw rate, decrease the rotor RPM and cause an over torque and/or over-temp condition. Therefore, the decision to reduce collective must be based on the _____ _________ of the altitude available for recovery.

Complete loss of tail rotor thrust:
WARNING:

Degree of roll and side-slip may be varied by varying ______and/or_______. (At airspeeds below approx. ___knots, the side-slip may become uncontrollable, and the helicopter will begin to spin on the vertical axis.)

Complete Loss of Tail Rotor Thrust-This situation involves a break in the drive system, such as a severed driveshaft, causing the tail rotor to lose power.

Indications:
1.)
2.)
3.)

Complete Loss of Tail Rotor Thrust-Procedures:

1.) If safe landing area is not immediately available, continue ______flight to suitable landing area or above _______ _____ __ ________ _________airspeed.

2.) When landing area is reached, make an _________landing (Throttle ______.)

3.) Use airspeed above _____ _____ __ ________ airspeed.