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Archive / FAA Rotorcraft Flying Handbook / FAA Rotorcraft Flying Handbook: Chapter 9 — Basic Flight Maneuvers

Chapter 9 — Basic Flight Maneuvers

Chapter 9 — Basic Flight Maneuvers — Part 1

FAA-H-8083-21 (2000)

From the previous chapters, it should be apparent that

no two helicopters perform the same way. Even when

flying the same model of helicopter, wind, temperature,

humidity, weight, and equipment make it difficult to

predict just how the helicopter will perform. Therefore,

this chapter presents the basic flight maneuvers in a

way that would apply to a majority of the helicopters.

In most cases, the techniques described apply to small

training helicopters with:

• A single, main rotor rotating in a counterclock-

wise direction (looking downward on the rotor).

• An antitorque system.

Where a technique differs, it will be noted. For example,

a power increase on a helicopter with a clockwise rotor

system requires right antitorque pedal pressure instead

of left pedal pressure. In many cases, the terminology

“apply proper pedal pressure” is used to indicate both

types of rotor systems. However, when discussing throt-

tle coordination to maintain proper r.p.m., there will be

no differentiation between those helicopters with a gov-

ernor and those without. In a sense, the governor is doing

the work for you. In addition, instead of using the terms

collective pitch control and the cyclic pitch control

throughout the chapter, these controls are referred to as

just collective and cyclic.

Because helicopter performance varies with different

weather conditions and aircraft loading, specific nose

attitudes and power settings will not be discussed. In

addition, this chapter does not detail each and every

attitude of a helicopter in the various flight maneuvers,

nor each and every move you must make in order to

perform a given maneuver.

When a maneuver is presented, there will be a brief

description, followed by the technique to accomplish

the maneuver. In most cases, there is a list of common

errors at the end of the discussion.

PREFLIGHT

Before any flight, you must ensure the helicopter is

airworthy by inspecting it according to the rotorcraft

flight manual, pilot’s operating handbook, or other

information supplied either by the operator or the man-

ufacturer. Remember that as pilot in command, it is

your responsibility to ensure the aircraft is in an air-

worthy condition.

In preparation for flight, the use of a checklist is important

so that no item is overlooked. Follow the manufacturer’s

suggested outline for both the inside and outside inspec-

tion. This ensures that all the items the manufacturer

feels are important are checked. Obviously, if there are

other items you feel might need attention, inspect

them as well.

MINIMUM EQUIPMENT LISTS (MELS) AND

OPERATIONS WITH INOPERATIVE

EQUIPMENT

The Code of Federal Regulations (CFRs) requires that

all aircraft instruments and installed equipment be

operative prior to each departure. However, when the

FAA adopted the minimum equipment list (MEL)

concept for 14 CFR part 91 operations, flights were

allowed with inoperative items, as long as the inopera-

tive items were determined to be nonessential for safe

flight. At the same time, it allowed part 91 operators,

without an MEL, to defer repairs on nonessential

equipment within the guidelines of part 91.

There are two primary methods of deferring maintenance

on rotorcraft operating under part 91. They are the defer-

ral provision of 14 CFR part 91, section 91.213(d) and an

FAA-approved MEL.

The deferral provision of section 91.213(d) is widely

used by most pilot/operators. Its popularity is due to

simplicity and minimal paperwork. When inoperative

equipment is found during preflight or prior to depar-

ture, the decision should be to cancel the flight, obtain

maintenance prior to flight, or to defer the item or

equipment.

Maintenance deferrals are not used for in-flight discrep-

ancies. The manufacturer's RFM/POH procedures are

to be used in those situations. The discussion that

Minimum Equipment List (MEL)—An inventory of instruments and

equipment that may legally be inoperative, with the specific conditions

under which an aircraft may be flown with such items inoperative.

follows assumes that the pilot wishes to defer mainte-

nance that would ordinarily be required prior to flight.

Using the deferral provision of section 91.213(d), the

pilot determines whether the inoperative equipment is

required by type design, the CFRs, or ADs. If the inop-

erative item is not required, and the helicopter can be

safely operated without it, the deferral may be made.

The inoperative item shall be deactivated or removed and

an INOPERATIVE placard placed near the appropriate

switch, control, or indicator. If deactivation or removal

involves maintenance (removal always will), it must be

accomplished by certificated maintenance personnel.

For example, if the position lights (installed equipment)

were discovered to be inoperative prior to a daytime

flight, the pilot would follow the requirements of sec-

tion 91.213(d).

The deactivation may be a process as simple as the pilot

positioning a circuit breaker to the OFF position, or as

complex as rendering instruments or equipment totally

inoperable. Complex maintenance tasks require a cer-

tificated and appropriately rated maintenance person to

perform the deactivation. In all cases, the item or equip-

ment must be placarded INOPERATIVE.

All rotorcraft operated under part 91 are eligible to use

the maintenance deferral provisions of section 91.213(d).

However, once an operator requests an MEL, and a Letter

of Authorization (LOA) is issued by the FAA, then the

use of the MEL becomes mandatory for that helicopter.

All maintenance deferrals must be accomplished in

accordance with the terms and conditions of the MEL and

the operator-generated procedures document.

The use of an MEL for rotorcraft operated under part 91

also allows for the deferral of inoperative items or

equipment. The primary guidance becomes the FAA-

approved MEL issued to that specific operator and

N-numbered helicopter.

The FAA has developed master minimum equipment

lists (MMELs) for rotorcraft in current use. Upon writ-

ten request by a rotorcraft operator, the local FAA Flight

Standards District Office (FSDO) may issue the appro-

priate make and model MMEL, along with an LOA, and

the preamble. The operator then develops operations

and maintenance (O&M) procedures from the MMEL.

This MMEL with O&M procedures now becomes the

operator's MEL. The MEL, LOA, preamble, and proce-

dures document developed by the operator must be on

board the helicopter when it is operated.

The FAA considers an approved MEL to be a supple-

mental type certificate (STC) issued to an aircraft by

serial number and registration number. It therefore

becomes the authority to operate that aircraft in a condi-

tion other than originally type certificated.

With an approved MEL, if the position lights were dis-

covered inoperative prior to a daytime flight, the pilot

would make an entry in the maintenance record or dis-

crepancy record provided for that purpose. The item is

then either repaired or deferred in accordance with the

MEL. Upon confirming that daytime flight with inopera-

tive position lights is acceptable in accordance with the

provisions of the MEL, the pilot would leave the position

lights switch OFF, open the circuit breaker (or whatever

action is called for in the procedures document), and plac-

ard the position light switch as INOPERATIVE.

There are exceptions to the use of the MEL for deferral.

For example, should a component fail that is not listed

in the MEL as deferrable (the rotor tachometer, engine

tachometer, or cyclic trim, for example), then repairs

are required to be performed prior to departure. If main-

tenance or parts are not readily available at that

location, a special flight permit can be obtained from

the nearest FSDO. This permit allows the helicopter to

be flown to another location for maintenance. This

allows an aircraft that may not currently meet applica-

ble airworthiness requirements, but is capable of safe

flight, to be operated under the restrictive special terms

and conditions attached to the special flight permit.

Deferral of maintenance is not to be taken lightly, and

due consideration should be given to the effect an inop-

erative component may have on the operation of a

helicopter, particularly if other items are inoperative.

Further information regarding MELs and operations

with inoperative equipment can be found in AC 91-67,

Minimum Equipment Requirements for General

Aviation Operations Under FAR Part 91.

ENGINE START

AND ROTOR ENGAGEMENT

During the engine start, rotor engagement, and systems

ground check, use the manufacturer’s checklists. If a

problem arises, have it checked before continuing.

Prior to performing these tasks, however, make sure

the area near the helicopter is clear of personnel and

equipment. Helicopters are safe and efficient flying

machines as long as they are operated within the

parameters established by the manufacturer.

ROTOR SAFETY CONSIDERATIONS

The exposed nature of the main and tail rotors deserve

special caution. You must exercise extreme care when

taxiing near hangars or obstructions since the distance

between the rotor blade tips and obstructions is very

difficult to judge. [Figure 9-1] In addition, you cannot

see the tail rotor of some helicopters from the cabin.

Therefore, when hovering backwards or turning in

those helicopters, allow plenty of room for tail rotor

clearance. It is a good practice to glance over your

shoulder to maintain this clearance.

Another rotor safety consideration is the thrust a heli-

copter generates. The main rotor system is capable of

blowing sand, dust, snow, ice, and water at high veloci-

ties for a significant distance causing injury to nearby

people and damage to buildings, automobiles, and other

aircraft. Loose snow, can severely reduce visibility and

obscure outside visual references. Any airborne debris

near the helicopter can be ingested into the engine air

intake or struck by the main and tail rotor blades.

SAFETY IN AND AROUND HELICOPTERS

People have been injured, some fatally, in helicopter

accidents that would not have occurred had they been

informed of the proper method of boarding or deplan-

ing. A properly briefed passenger should never be

endangered by a spinning rotor. The simplest method

of avoiding accidents of this sort is to stop the rotors

before passengers are boarded or allowed to depart.

Because this action is not always practicable, and to

realize the vast and unique capabilities of the helicop-

ter, it is often necessary to take on passengers or to

deplane them while the engine and rotors are turning.

To avoid accidents, it is essential that all persons asso-

ciated with helicopter operations, including passengers,

be made aware of all possible hazards and instructed as

to how they can be avoided.

Persons directly involved with boarding or deplaning

passengers, aircraft servicing, rigging, or hooking up

external loads, etc., should be instructed as to their

duties. It would be difficult, if not impossible, to cover

each and every type of operation related to helicopters.

A few of the more obvious and common ones are cov-

ered below.

RAMP ATTENDANTS AND AIRCRAFT SERVIC-

ING PERSONNEL— These personnel should be

instructed as to their specific duties, and the proper

method of fulfilling them. In addition, the ramp atten-

dant should be taught to:

1. keep passengers and unauthorized persons out of

the helicopter landing and takeoff area.

2. brief passengers on the best way to approach and

board a helicopter with its rotors turning.

AIRCRAFT SERVICING— The helicopter rotor blades

should be stopped, and both the aircraft and the refuel-

ing unit properly grounded prior to any refueling oper-

ation. You, as the pilot, should ensure that the proper

grade of fuel and the proper additives, when required,

are being dispensed.

Refueling the aircraft, while the blades are turning,

known as "hot refueling," may be practical for certain

types of operation. However, this can be hazardous if

not properly conducted. Pilots should remain at the

flight controls; and refueling personnel should be

knowledgeable about the proper refueling procedures

and properly briefed for specific helicopter makes and

models.

Refueling units should be positioned to ensure ade-

quate rotor blade clearance. Persons not involved with

the refueling operation should keep clear of the area.

Smoking must be prohibited in and around the aircraft

during all refueling operations.

EXTERNAL-LOAD RIGGERS— Rigger training is

possibly one of the most difficult and continually

changing problems of the helicopter external-load

operator. A poorly rigged cargo net, light standard, or

load pallet could result in a serious and costly accident.

It is imperative that all riggers be thoroughly trained to

meet the needs of each individual external-load opera-

tion. Since rigging requirements may vary several

times in a single day, proper training is of the utmost

importance to safe operations.

PILOT AT THE FLIGHT CONTROLS— Many heli-

copter operators have been lured into a "quick turn-

around" ground operation to avoid delays at airport

terminals and to minimize stop/start cycles of the

engine. As part of this quick turnaround, the pilot might

leave the cockpit with the engine and rotors turning.

Such an operation can be extremely hazardous if a gust

of wind disturbs the rotor disc, or the collective flight

control moves causing lift to be generated by the rotor

system. Either occurrence may cause the helicopter to

roll or pitch, resulting in a rotor blade striking the tail-

boom or the ground. Good operating procedures dictate

that pilots remain at the flight controls whenever the

engine is running and the rotors are turning.

EXTERNAL-LOAD HOOKUP PERSONNEL—

There are several areas in which these personnel

should be knowledgeable. First, they should know the

lifting capability of the helicopters involved. Since

some operators have helicopter models with almost

Figure 9-1. Exercise extreme caution when hovering near

buildings or other aircraft.

identical physical characteristics but different lifting

capabilities, this knowledge is essential. For example,

a hookup person may be working with a turbocharged

helicopter on a high altitude project when a non-tur-

bocharged helicopter, which looks exactly the same to

the ground crew, comes to pick up a load. If the

hookup person attaches a load greater than the

non-turbocharged helicopter can handle, a potentially

dangerous situation could exist.

Second, know the pilots. The safest plan is to stan-

dardize all pilots in the manner in which sling loads

are picked up and released. Without pilot standardiza-

tion, the operation could be hazardous. The operator

should standardize the pilots on operations while

personnel are beneath the helicopter.

Third, know the cargo. Many items carried via sling are

very fragile, others can take a beating. The hookup per-

son should always know when a hazardous article is

involved and the nature of the hazard, such as explo-

sives, radioactive materials, and toxic chemicals. In

addition to knowing this, the hookup person should be

familiar with the types of protective gear or clothing

and the actions necessary to protect their own safety

and that of the operation.

Fourth, know appropriate hand signals. When direct

radio communications between ground and flight per-

sonnel are not used, the specific meaning of hand

signals should be coordinated prior to operations.

Fifth, know emergency procedures. Ground and flight

personnel should fully agree to and understand the

actions to be taken by all participants in the event of

emergencies. This prior planning is essential to avoid

injuries to all concerned.

PASSENGERS— All persons who board a helicopter

while its rotors are turning should be instructed in the

safest means of doing so. Naturally, if you are at the

controls, you may not be able to conduct a boarding

briefing. Therefore, the individual who arranged for the

passengers' flight or is assigned as the ramp attendant

should accomplish this task. The exact procedures may

vary slightly from one helicopter model to another, but

in general the following should suffice.

When boarding—

1. stay away from the rear of the helicopter.

2. approach or leave the helicopter in a crouching

manner.

3. approach from the side or front, but never out of

the pilot's line of vision.

4. carry tools horizontally, below waist level, never

upright or over the shoulder.

5. hold firmly to hats and loose articles.

6. never reach up or dart after a hat or other object

that might be blown off or away.

7. protect eyes by shielding them with a hand or by

squinting.

8. if suddenly blinded by dust or a blowing object,

stop and crouch lower; or better yet, sit down and

wait for help.

9. never grope or feel your way toward or away

from the helicopter.

Since few helicopters carry cabin attendants, you, as

the pilot, will have to conduct the pre-takeoff and pre-

landing briefings. The type of operation dictates what

sort of briefing is necessary. All briefings should

include the following:

1. The use and operation of seatbelts for takeoff, en

route, and landing.

2. For overwater flights, the location and use of

flotation gear and other survival equipment that

might be on board. You should also include how

and when to abandon the helicopter should a

ditching be necessary.

3. For flights over rough or isolated terrain, all

occupants should be told where maps and sur-

vival gear are located.

4. Passengers should be instructed as to what

actions and precautions to take in the event of an

emergency, such as the body position for best

spinal protection against a high vertical impact

landing (erect with back firmly against the seat

back); and when and how to exit after landing.

Ensure that passengers are aware of the location

of the fire extinguisher and survival equipment.

5. Smoking should not be permitted within 50 feet

of an aircraft on the ground. Smoking could be

permitted, at the discretion of the pilot, except

under the following conditions:

• during all ground operations.

• during, takeoff or landing.

• when carrying flammable or hazardous

materials.

When passengers are approaching or leaving a helicop-

ter that is sitting on a slope with the rotors turning, they

should approach and depart downhill. This affords the

greatest distance between the rotor blades and the

ground. If this involves walking around the helicopter,

they should always go around the front, never the rear.

VERTICAL TAKEOFF TO A HOVER

A vertical takeoff, or takeoff to a hover, is a maneuver

in which the helicopter is raised vertically from the sur-

face to the normal hovering altitude (2 to 5 feet) with a

minimum of lateral or longitudinal movement.

TECHNIQUE

Prior to any takeoff or maneuver, you should ensure

that the area is clear of other traffic. Then, head the hel-

icopter into the wind, if possible. Place the cyclic in the

neutral position, with the collective in the full down

position. Increase the throttle smoothly to obtain and

maintain proper r.p.m., then raise the collective. Use

smooth, continuous movement, coordinating the throt-

tle to maintain proper r.p.m. As you increase the collec-

tive, the helicopter becomes light on the skids, and

torque tends to cause the nose to swing or yaw to the

right unless sufficient left antitorque pedal is used to

maintain the heading. (On helicopters with a clockwise

main rotor system, the yaw is to the left and right pedal

must be applied.)

As the helicopter becomes light on the skids, make nec-

essary cyclic pitch control adjustments to maintain a

level attitude. When airborne, use the antitorque pedals

to maintain heading and the collective to ensure contin-

uous vertical assent to the normal hovering altitude.

When hovering altitude is reached, use the throttle and

collective to control altitude, and the cyclic to maintain

a stationary hover. Use the antitorque pedals to main-

tain heading. When a stabilized hover is achieved,

check the engine instruments and note the power

required to hover. You should also note the position of

the cyclic. Cyclic position varies with wind and the

amount and distribution of the load.

Excessive movement of any flight control requires a

change in the other flight controls. For example, if

while hovering, you drift to one side, you naturally

move the cyclic in the opposite direction. When you do

this, part of the vertical thrust is diverted, resulting in a

loss of altitude. To maintain altitude, you must increase

the collective. This increases drag on the blades and

tends to slow them down. To counteract the drag and

maintain r.p.m., you need to increase the throttle.

Increased throttle means increased torque, so you must

add more pedal pressure to maintain the heading. This

can easily lead to overcontrolling the helicopter.

However, as your level of proficiency increases, prob-

lems associated with overcontrolling decrease.

COMMON ERRORS

1. Failing to ascend vertically as the helicopter

becomes airborne.

2. Pulling through on the collective after becoming

airborne, causing the helicopter to gain too much

altitude.

3. Overcontrolling the antitorque pedals, which not

only changes the handling of the helicopter, but

also changes the r.p.m.

4. Reducing throttle rapidly in situations where

proper r.p.m. has been exceeded. This usually

results in exaggerated heading changes and loss

of lift, resulting in loss of altitude.

HOVERING

Hovering is a maneuver in which the helicopter is main-

tained in a nearly motionless flight over a reference

point at a constant altitude and on a constant heading.

The maneuver requires a high degree of concentration

and coordination.

TECHNIQUE

To maintain a hover over a point, you should look for

small changes in the helicopter’s attitude and altitude.

When you note these changes, make the necessary con-

trol inputs before the helicopter starts to move from the

point. To detect small variations in altitude or position,

your main area of visual attention needs to be some

distance from the aircraft, using various points on the

helicopter or the tip-path plane as a reference. Looking

too close or looking down leads to overcontrolling.

Obviously, in order to remain over a certain point, you

should know where the point is, but your attention

should not be focused there.

As with a takeoff, you control altitude with the collec-

tive and maintain a constant r.p.m. with the throttle.

Use the cyclic to maintain the helicopter’s position and

the pedals to control heading. To maintain the

helicopter in a stabilized hover, make small, smooth,

coordinated corrections. As the desired effect occurs,

remove the correction in order to stop the helicopter’s

movement. For example, if the helicopter begins to

move rearward, you need to apply a small amount of

forward cyclic pressure. However, neutralize this pres-

sure just before the helicopter comes to a stop, or it will

begin to move forward.

After you gain experience, you will develop a certain

“feel” for the helicopter. You will feel and see small

deviations, so you can make the corrections before the

helicopter actually moves. A certain relaxed looseness

develops, and controlling the helicopter becomes sec-

ond nature, rather than a mechanical response.

COMMON ERRORS

1. Tenseness and slow reactions to movements of

the helicopter.

2. Failure to allow for lag in cyclic and collective

pitch, which leads to overcontrolling.

3. Confusing attitude changes for altitude changes,

which result in improper use of the controls.

4. Hovering too high, creating a hazardous flight

condition.

5. Hovering too low, resulting in occasional touch-

down.

HOVERING TURN

A hovering turn is a maneuver performed at hovering

altitude in which the nose of the helicopter is rotated

either left or right while maintaining position over a

reference point on the surface. The maneuver requires

the coordination of all flight controls and demands pre-

cise control near the surface. You should maintain a

constant altitude, rate of turn, and r.p.m.

TECHNIQUE

Initiate the turn in either direction by applying anti-

torque pedal pressure toward the desired direction. It

should be noted that during a turn to the left, you need

to add more power because left pedal pressure

increases the pitch angle of the tail rotor, which, in turn,

requires additional power from the engine. A turn to the

right requires less power. (On helicopters with a clock-

wise rotating main rotor, right pedal increases the pitch

angle and, therefore, requires more power.)

As the turn begins, use the cyclic as necessary (usually

into the wind) to keep the helicopter over the desired

spot. To continue the turn, you need to add more and

more pedal pressure as the helicopter turns to the cross-

wind position. This is because the wind is striking the

tail surface and tail rotor area, making it more difficult

for the tail to turn into the wind. As pedal pressures

increase due to crosswind forces, you must increase the

cyclic pressure into the wind to maintain position. Use

the collective with the throttle to maintain a constant

altitude and r.p.m. [Figure 9-2]

After the 90° portion of the turn, you need to decrease

pedal pressure slightly to maintain the same rate of

turn. Approaching the 180°, or downwind, portion,

you need to anticipate opposite pedal pressure due to

the tail moving from an upwind position to a down-

wind position. At this point, the rate of turn has a ten-

dency to increase at a rapid rate due to the

weathervaning tendency of the tail surfaces. Because

of the tailwind condition, you need to hold rearward

cyclic pressure to keep the helicopter over the same

spot.

Because of the helicopter’s tendency to weathervane,

maintaining the same rate of turn from the 180° posi-

tion actually requires some pedal pressure opposite the

direction of turn. If you do not apply opposite pedal

pressure, the helicopter tends to turn at a faster rate.

The amount of pedal pressure and cyclic deflection

throughout the turn depends on the wind velocity. As

you finish the turn on the upwind heading, apply

opposite pedal pressure to stop the turn. Gradually

apply forward cyclic pressure to keep the helicopter

from drifting.

Cyclic - Forward

Pedal - Some left in□

hover, more left to start □

turn to left.

Cyclic - Right

Pedal - Most left□

pressure in turn.

Cyclic - Rearward

Pedal - Changing from□

left to right pressure.

Cyclic - Left

Pedal - Most right pedal□

pressure in turn.

Cyclic - Forward

Pedal - Some right to□

stop turn, then left to□

maintain heading.

Collective - Power□

required to hover at□

desired height.

Throttle – As necessary□

to maintain r.p.m.

Collective -Most power□

in turn.

Throttle – As necessary□

to maintain r.p.m.

Collective - Power□

reducing.

Throttle – As necessary□

to maintain r.p.m.

Collective - Least power□

in turn.

Throttle – As necessary□

to maintain r.p.m.

Collective - Increasing□

as left pedal applied.

Throttle – As necessary□

to maintain r.p.m.

WIND

Figure 9-2. Left turns in helicopters with a counterclockwise rotating main rotor are more difficult to execute because the tail

rotor demands more power. This requires that you compensate with additional collective pitch and increased throttle. You

might want to refer to this graphic throughout the remainder of the discussion on a hovering turn to the left.

Control pressures and direction of application change

continuously throughout the turn. The most dramatic

change is the pedal pressure (and corresponding power

requirement) necessary to control the rate of turn as the

helicopter moves through the downwind portion of the

maneuver.

Turns can be made in either direction; however, in a

high wind condition, the tail rotor may not be able to

produce enough thrust, which means you will not be

able to control a turn to the right in a counterclockwise

rotor system. Therefore, if control is ever question-

able, you should first attempt to make a 90° turn to the

left. If sufficient tail rotor thrust exists to turn the

helicopter crosswind in a left turn, a right turn can

be successfully controlled. The opposite applies to

helicopters with clockwise rotor systems. In this

case, you should start your turn to the right.

Hovering turns should be avoided in winds strong

enough to preclude sufficient aft cyclic control to

maintain the helicopter on the selected surface

reference point when headed downwind. Check

the flight manual for the manufacturer’s recom-

mendations for this limitation.

COMMON ERRORS

1. Failing to maintain a slow, constant rate of turn.

2. Failing to maintain position over the reference

point.

3. Failing to maintain r.p.m. within normal range.

4. Failing to maintain constant altitude.

5. Failing to use the antitorque pedals properly.

HOVERING—FORWARD FLIGHT

You normally use forward hovering flight to move a

helicopter to a specific location, and it is usually begun

from a stationary hover. During the maneuver, constant

groundspeed, altitude, and heading should be maintained.

TECHNIQUE

Before starting, pick out two references directly in

front and in line with the helicopter. These reference

points should be kept in line throughout the maneuver.

[Figure 9-3]

Begin the maneuver from a normal hovering altitude by

applying forward pressure on the cyclic. As movement

begins, return the cyclic toward the neutral position to

keep the groundspeed at a slow rate—no faster than a

brisk walk. Throughout the maneuver, maintain a

constant groundspeed and path over the ground with

the cyclic, a constant heading with the antitorque

pedals, altitude with the collective, and the proper

r.p.m. with the throttle.

To stop the forward movement, apply reward cyclic

pressure until the helicopter stops. As forward motion

stops, return the cyclic to the neutral position to pre-

vent rearward movement. Forward movement can also

be stopped by simply applying rearward pressure to

level the helicopter and let it drift to a stop.

COMMON ERRORS

1. Exaggerated movement of the cyclic, resulting in

erratic movement over the surface.

2. Failure to use the antitorque pedals properly,

resulting is excessive heading changes.

3. Failure to maintain desired hovering altitude.

4. Failure to maintain proper r.p.m.

HOVERING—SIDEWARD FLIGHT

Sideward hovering flight may be necessary to move

the helicopter to a specific area when conditions make

it impossible to use forward flight. During the maneu-

ver, a constant groundspeed, altitude, and heading

should be maintained.

TECHNIQUE

Before starting sideward hovering flight, make sure the

area you are going to hover into is clear. Then pick two

points of reference in a line in the direction of sideward

hovering flight to help you maintain the proper ground

Reference□

Points

Figure 9-3. To maintain a straight ground track, use two refer-

ence points in line and at some distance in front of the helicopter.

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