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The tail boom provides an extended support to mount the tail rotor and vertical fin (By increasing the moment arm of the tail rotor it allows the size of the tail rotor to be smaller than the main rotor).  The tail boom is mounted to the forward section via a mounting pad and four bolts.. Horizontal Stabilizer:  Negative camber pushes the tail down to allow near level forward flight.

1.2.5.

Described the purpose of the vertical fin and state how it provides directional stability and reduces tail rotor loads.

Construction

Semi-monocoque made of aluminum honeycomb and aluminum skin mounted at a 5.5o offset from the longitudinal axis.

Purpose

Provides directional stability and reduced tail rotor loads at cruise airspeed.  This is accomplished by a 5.5o offset from the longitudinal axis.  This offset provides a horizontal lift component that assists in countering torque. (The greater the airspeed, the greater the lift.)

1.3.

Identify the components of the cargo hook assembly with its associated capabilities and limitations.

Components

1.

Frame

2.

Hook assembly

3.

1 Electrical and 2 manual (one in the cockpit and one on the hook assembly) release

Capabilities and Limitations

Structural weight capacity of 1500 lbs

1.4.

Described aircraft lighting system and identify the associated lights, switches, and circuit protection.

Exterior lights

1.

Position Lights:  Controlled by 3 switches on the overhead panel:  On / Off, Bright / Dim, and Steady / Flashing.  On the ground at night during periods of low rotor RPM use Flashing / Bright to signal other aircraft not to taxi near you.

2.

Anti-Collision lights: 2 lights controlled by a single overhead switch (On / Off):  Top of vertical fin and below fuselage aft of the baggage compartment.  Circuit protection is provided by the anti-collision circuit breaker type switch located on the overhead console.

3.

Landing Light:  controlled by a single overhead switch.  Light is located just aft of forward cross tube.  CAUTION:  10 minute operating limitation due to fire hazard.  

4.

Search Light:  Controlled by 2 switches on the pilot’s collective.  On / Off / Stow Switch: CAUTION Once the automatic Stow cycle is complete the switch should be turned OFF.  If left in Stow a faulty heat switch may cause the extend / retract motor to burn out.  Directional Control Switch:  The light is adjustable from 0o  to 120 o of extension.  From 0 o to 60 o the light will rotate 90 o left or right.  From 60 o to 120 o the light will rotate 360 o.  Circuitry is protected by two circuit breaker, labeled SEARCHLIGHT POWER and SEARCHLIGHT CONT.

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