R44 Pilot's Operating Handbook > Systems Description > Flashcards

Systems Description Flashcards

(59 cards)

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1
Q

What is the relationship between collective operation and throttle?

A

The engine throttle is correlated to collective inputs through a mechanical linkage

When the collective is raised, the throttle is opened; when lowered, the throttle is closed.

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2
Q

What happens to the throttle when the collective stick is raised?

A

The throttle is opened

This is part of the mechanical linkage between collective inputs and throttle.

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3
Q

What happens to the throttle when the collective stick is lowered?

A

The throttle is closed

This is part of the mechanical linkage between collective inputs and throttle.

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4
Q

What additional feature does the collective stick incorporate?

A

A twist grip throttle control

This feature is described in the Engine Controls section.

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5
Q

CAUTION: Above 6000 feet (1800 meters), what happens to throttle-collective correlation and governor effectiveness?

A

They are less effective

Therefore, power changes should be slow and smooth.

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6
Q

CAUTION: At high power settings above 6000 feet (1800 meters), how is RPM controlled?

A

With collective

The throttle is frequently wide open at these settings.

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7
Q

What must be used with caution during flight?

A

Control friction

Excessive friction may make the helicopter difficult to control.

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8
Q

True or false: Excessive friction during flight can enhance control of the helicopter.

A

FALSE

Excessive friction may make the helicopter difficult to control.

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9
Q

True or false: At high density altitudes, the governor response rate is always effective in preventing overspeed.

A

FALSE

The governor response rate may be too slow to effectively manage overspeed in certain conditions.

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10
Q

List the conditions when the governor response rate may be ineffective at high density altitudes.

A
  • During gusts
  • During pull-ups
  • When lowering collective

These situations can lead to overspeed if the governor response is slow.

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11
Q

What is required to switch hydraulics OFF?

A

Electrical power

This indicates that electrical power is essential for the operation of hydraulic systems.

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12
Q

True or false: Pulling the HYD circuit breaker will turn off hydraulics.

A

FALSE

Pulling the HYD circuit breaker will disable the hydraulic switch but will not turn off the hydraulics.

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13
Q

What is required to increase collective without hydraulic pressure?

A

A large pilot input force

This indicates the need for significant manual effort to adjust the collective in the absence of hydraulic assistance.

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14
Q

What happens to the collective when any cyclic input is made without hydraulic pressure?

A

It lowers

This necessitates periodic increases in the collective to maintain desired flight conditions.

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15
Q

When are starter buttons active?

A

When the master switch is on, even if the ignition switch is off

This indicates that the starter buttons can be engaged without the ignition being active.

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16
Q

What should be done with the rotor brake after shutdown?

A

It should be left engaged

Engaging the rotor brake disables the starter button and reduces the possibility of unintentional starter engagement.

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17
Q

True or false: The starter button can be engaged if the ignition switch is off.

A

TRUE

The starter button remains active as long as the master switch is on.

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18
Q

What is the purpose of the auxiliary pump?

A

Priming the engine for starting and providing fuel pump redundancy

The auxiliary pump runs in flight to ensure the engine functions normally.

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19
Q

True or false: The engine will function normally with only the engine-driven pump operating.

A

TRUE

The engine can operate with either the engine-driven or auxiliary (electric) pump.

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20
Q

Fill in the blank: The auxiliary pump runs in flight to provide _______.

A

fuel pump redundancy

This ensures that the engine has a backup fuel source.

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21
Q

What is the standard voltage of the DC electrical system mentioned?

A

28-volt

This system includes an alternator and a sealed lead-acid battery.

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22
Q

Where can the battery be located in the aircraft?

A
  • Engine compartment
  • Under the left front seat
  • Beneath the instrument console

The battery’s location can vary based on the aircraft design.

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23
Q

What does the circuit breaker panel indicate?

A

Function and amperage

The panel is located on the ledge just forward of the left front seat.

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24
Q

True or false: Inflight reset of circuit breakers is recommended.

Study These Flashcards
A

FALSE

It is not recommended to reset circuit breakers inflight.

25
What does the **battery switch** control?
Battery relay ## Footnote The battery relay disconnects the battery from the electrical system.
26
What is the purpose of the **wire protected by a fuse** near the battery?
Bypasses the battery relay ## Footnote This allows tachometers and the clock to receive battery power with the battery switch off.
27
What does the **alternator control unit** protect the electrical system from?
Overvoltage conditions ## Footnote It ensures the electrical system operates within safe voltage limits.
28
What does the **ammeter** indicate?
Current to the battery ## Footnote A “—” indicates discharge.
29
What should you do if the **ALT caution light** or ammeter indicates discharge during flight?
* Turn off nonessential electrical equipment * Switch alternator off then back on after one second ## Footnote If the ALT light stays on or ammeter still indicates discharge, land as soon as practical.
30
What can result from continued flight without a functioning **alternator**?
Loss of power to tachometers ## Footnote This can produce a hazardous flight condition.
31
What is the function of the **avionics master switch** in later aircraft?
Controls power to the avionics bus ## Footnote It allows all avionics to be switched on and off by a single switch.
32
Landing lights operate only when the **clutch actuator switch** is in what position?
engage position ## Footnote This indicates that the landing lights are dependent on the switch being engaged for operation.
33
True or false: Continuous operation of **landing and position lights** in flight is recommended.
TRUE ## Footnote This practice is recommended to promote collision avoidance.
34
What should you **not do** with the helicopter's **clutch switch**?
Do not stow helicopter with clutch switch engaged ## Footnote The tachometers are powered with the clutch engaged and will discharge the battery.
35
What does the **LOW FUEL** indicator signify when it illuminates immediately without delay when tested?
A fault is indicated and should be investigated by a qualified mechanic ## Footnote This occurs immediately after the test button is depressed.
36
What must be released before starting the **engine**?
The brake ## Footnote This is a critical safety step to ensure proper engine startup.
37
When the **brake** is engaged, what happens to the starter buttons?
They are disabled ## Footnote This prevents accidental engine starts while the brake is engaged.
38
CAUTION: Applying rotor brake without waiting at least _______ after engine stops may damage brake shoes.
30 seconds ## Footnote Waiting is necessary to avoid damage to the brake components.
39
CAUTION: Using a force which stops rotor in less than _______ may damage brake shoes.
20 seconds ## Footnote This guideline is important to prevent excessive wear or damage to the brake system.
40
What does the **carbon monoxide (CO) detector** indicate?
Elevated cabin CO levels ## Footnote CO is an odorless, toxic gas present in engine exhaust that can cause headaches, drowsiness, and possible loss of consciousness.
41
What can cause **elevated CO levels** in the cabin?
* Exhaust leak * Exhaust recirculation during prolonged hovering ## Footnote These conditions can lead to dangerous levels of carbon monoxide in the cabin.
42
What are the components of the **CO detector system**?
* Sensor above the pilot’s heater outlet * Caution light ## Footnote The system is designed to monitor CO levels and alert the pilot to potential dangers.
43
What does the **CARBON MONOXIDE** indicate when power is switched on?
Light flashes twice ## Footnote This indicates that the CO detector system is functioning properly.
44
What does a **continuing flash every four seconds** indicate?
Sensor malfunction ## Footnote This alert requires attention to ensure the safety of the cabin environment.
45
What should you do if the **Carbon Monoxide light illuminates**?
* Shut off heater * Open nose and door vents to ventilate the cabin * If hovering, land or transition to forward flight ## Footnote These actions help mitigate the risk of CO poisoning.
46
What symptoms of **CO poisoning** should prompt immediate landing?
* Headache * Drowsiness * Dizziness ## Footnote These symptoms indicate potential danger and require immediate action.
47
What should be done before the next flight if CO poisoning symptoms occur?
Have exhaust system inspected ## Footnote Ensuring the exhaust system is safe is crucial for preventing CO buildup.
48
What types of **chemicals** can damage the CO sensor?
* Solvents * Detergents * Aerosol sprays ## Footnote Avoiding these chemicals near the sensor is important for maintaining its functionality.
49
What precaution should be taken when **cleaning the cabin interior** near the CO sensor?
Temporarily tape off openings in top and bottom of sensor housing ## Footnote This prevents cleaning agents from damaging the sensor.
50
What does **ELT** stand for?
Emergency Locator Transmitter ## Footnote The ELT is a crucial device for emergency situations, aiding in locating aircraft.
51
What are the main components of the **Emergency Locator Transmitter (ELT)** installation?
* Transmitter with internal battery pack * External antenna * Remote switch/annunciator ## Footnote These components work together to ensure the ELT functions properly during emergencies.
52
Where is the **transmitter** of the ELT mounted?
Upper steel tube frame ## Footnote The transmitter is accessible through the aft, upper cowl door.
53
Where is the **remote switch/annunciator** located?
Left of the cyclic stick ## Footnote This switch allows for operation of the ELT from the cockpit.
54
What position should the **transmitter switch** be in for flight?
AUTO or ARM ## Footnote The switch should always be secured in this position during flight.
55
What is the position of the **remote switch/annunciator** during flight?
It should be in the AUTO or ARMED (middle) position ## Footnote This ensures the ELT will transmit when subjected to a high 'G' load.
56
What happens when the ELT is subjected to a high **'G' load**?
It begins transmitting ## Footnote The red indicator light illuminates when the unit is transmitting.
57
What should you do if an emergency landing is imminent and time permits?
Move the remote switch to ON ## Footnote This activates the transmitter for emergency communication.
58
What position should be used to stop transmission if the ELT is inadvertently activated?
RESET position ## Footnote This will stop transmission and reset the unit, extinguishing the red indicator light.
59
For detailed instructions on **ELT operation**, where should one refer?
Manufacturer’s instructions ## Footnote These instructions are supplied with the unit and provide essential information for operation and maintenance.
R44 Pilot's Operating Handbook
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