quaggi

4回閲覧 • 100問 • 2年前

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The helicopter is on the ground w ith both engines running, the External Pow er Source is connected (EXT PWR sw itch = ON) and both generators are operating (GEN 1 and GEN 2 sw itches = ON). From w here are the electrical bus-bars fed?

The external pow er source, only

When starting Engine No.2 as the first Engine with the external pow er not available, w hat position must the BUS TIE sw itch be in?

At w hat value is the DC Starter Generator allow ed to be connected to the buses?

50% Ng

What can cause the 1 DC GEN caution to be displayed in the CAS

Starter/Generator 1 is not connected to MAIN 1 bus or is providing too little pow er

How doestheMAINBATTOFFcautionaffectthesystem operation?

The Main Battery cannot supply the MAIN buses and cannot be recharged

How does the AUX BATT OFF caution affect the system operation?

The Auxiliary Battery cannot be recharged

What conclusion w ould you reach if the tw o generator loadmeters read the same value?

The BUS TIE sw itch might have been leftatON

Whichof thefollowingconditions does NOTcausethe Bus Tie contactor to close?

DC BUS FAIL caution

What does the GCU Test Box simulate?

Overvoltage

Which messages are displayed in the CAS w indow w hen the EXT PWR sw itch is set to ON?

EXT PWR DOOR caution and EXT PWR ON advisory

What is the purpose of the GCU?

To control, monitor and protect the Starter-Generator

Which sensor provides data for the DCGenerator Loadmeter?

shunt

One engine is running, External pow er is connected to the helicopter and EXT PWR sw itch is ON. What supplies pow er to the Starter w hen starting the second engine?

External Pow er and Main Battery

One engine is running and External pow er is NOT available. What supplies pow er to the Starter w hen starting the second engine?

Cross-side Generator and Main Battery

Following a dual generator failure during flight, how can the Non-essential buses be restored?

Non-Essential buses can not be restored

During normal operating conditions in flight, how does the DC Pow er distribution system operate?

As a split-bus system(buses #1 and #2 are not interconnected)

What supplies the pow er to energize the Generator Line Contactor

GCU

What happens if after aircraft landing (generators are still on-line) the external pow er is connected to the helicopter and the EXT PWR sw itch is moved to ON?

The generators are automatically sw itched off-line as the external pow er voltage is connected to the helicopter buses (Power Changeover Relays)

After having connected the DCexternal power plug to the helicopter, the External Pow er Sensing CB is found tripped. What could be a probable cause?

External Pow er voltage is higher than 29.7 VDC

What w ill be indicated on the displays if the DC GENERATOR 1 LOADMETER parameter is declared invalid?

Pointer not displayed; Yellow dashes in place of values

What type of Starter Generators are fitted to the AW139?

Brush-type and cooled by forced air

Which Bus Bars are not powered if Generator No.2 fails?

NONESS1and2

What are the main characteristics of the Starter/Generator?

300 Ampere brush type unit

What is the condition of the BUS-TIE contactor w ith the BUS-TIE Sw itch in AUTO and both DC Generators on line?

De-Energised open

Which condition is true w ith External Pow er supplying power to the aircraft?

The MAIN and AUX Battery Contactors are de-energised to prevent battery charging

What is the function of the Auxiliary Battery Contactor?

To allow the Auxiliary Battery to be charged w henever the Auxiliary Battery Contactor is energised and any Generator is on line.

Which of the following conditions will allow the Main Bus No.2 to be energised w ith the helicopter on the ground and both Batteries available

BATTERY MASTER" Sw itch = ON, "BATTERY MAIN" Sw itch = ON, "BUS TIE" Sw itch = ON

Which conditions will allow 50 minutes of safe flight following a Double DCGenerator Failure?

MAIN Battery Sw itch is set OFF, Fuel Booster Pumps are sw itched OFF and Pilot selects single DU operation via the RCP

What design feature is employed to protect the Engine Accessory Drive Train following a DCGenerator mechanical failure?

Shear Shaft

What is the condition of the DC Electrical System w ith External Power connected to the aircraft?

ESSBUS1and2,MAINBUS1and2, NON ESS BUS 1 and 2 are pow ered, batteries are not charging

When are the Non-Essential Bus Bars energised?

When External Pow er is connected or both Generators are on line.

With both Engines at 100% Nf and External Pow er ON, w hen w ill the Generators be supplying the pow er?

As soon as the EXT PWR sw itch is set to OFF

When connecting External Power you find that the EXT PWRSENSE(CB28) Circuit Breaker is tripped. What is the most likely cause?

External Pow er is supplying a voltage higher than 30.5 Vdc

When the helicopter is in the hangar, how are the Non-Essential bus bars fed?

Only w hen the External Pow er source is supplying the helicopter

Which of the following captions can be displayed in the CAS w indow at the same time?

EXT PWR DOOR and EXT PWR READY

Where is the Pow er Distribution Panel (PDP) No.1 located?

In the Cabin Roof

How is emergency evacuation of the passengers achieved?

Through the cabin windows

Where is the ELT unit installed?

tailboom

How is the ELT self test result provided?

By both monitoring the sw eep tone transmitted on the VHF guard frequency and the red LEDon the ELT control panel

Which of the following statements regarding the ELT (Emergency Locator Transmitter) Systemis correct?

The ELT Sw itch can be used to stop an automatically-activated transmission

How many connectors are there on the ELT (Emergency Locator Transmitter) Antenna?

two

On which frequencies does the ELT transmit?

121,500 MHz (Civil), 243,000 MHz (Military), 406,025 MHz (SAR SAT)

What is the meaning of the element "39" in the Maintenance Manual Data Module Code "39 A 28 11 00 00A 520A A"

Applicable aircraft model code

Regarding Airworthiness Limitations which of the following is true?

They are EASA/FAA approved and can only be changed after additional approval from the Authority

Which of the following statements is correct regarding the GCU Protection functions?

The protection function is applicable during the starting phase

What are the indications during the ENG 1 FIRE Detector Test?

1 ENG FIRE Warning and 1 FIRE DET Caution appear in the CAS window. MWL and MCL flash. "ENGINE 1 FIRE" aural message and tones are generated. Red ENG 1 "FIRE" on the FIRE DETECT/EXTING Control Panel, FIRE red lamp in the left Engine Control Lever (EC

What is the purpose of the two switches contained inside the Fire Detection Responder?

The LP (Integrity) Switch detects a leakage of gas and the HP (Responder Alarm) Switch detects a fire or overheat condition

How is engine No.2 starting is performed when External Power is not available

With the BUS TIE switch set to ON

What conditions will the Generator Control Unit (GCU) disconnect the Generator from the Bus-Bars?

Only when an under-current event exists

Which Power Control Module (PCM) Filter is provided with a Visual Clogged Indicator?

Both Pressure and Return Filters

What hoses connect the Hydraulic Pumps to the Power Control Module (PCM)?

Suction, pressure, case drain

Which of the following statements is true regarding the Electric Hydraulic Pump?

It is part of Hydraulic System No.1

During Engine starting, on batteries, how is Battery power distributed?

The Main Battery is used to supply the Starter Generator, while the Auxilliary Battery is used to feed the Essential Bus Bars

When are the Non Essential Bus Bars fed?

When External Power is connected to the Aircraft

With the helicopter on the ground and the external power connected (EXT SW = ON) and the two generators are operating (GEN. No.1-2 = ON), how are the electrical Bus Bars fed?

By the External Power

When switched ON, how long can the Electric Hydraulic Pump remain ON?

2 minutes maximum

What is the main characteristic of the Hydraulic Pumps?

HPS 1, HPS 2 and HPS 4 all have the same part number

What is the main characteristic of the Hydraulic Pumps?

HPS 1, HPS 2 and HPS 4 all have the same part number

Where is the Hydraulic Pump No. 4 installed?

On the front side of the MGB

According to "Dimensions and Areas" chapter of the IETP, what sort of reference are BL, WL and STA?

Reference Sections numbered from front to back, bottom to top and left to right

What visual indication shows Hydraulic Pump failure

A red pop-out button on the Power Control Module (PCM)

What condition allows the Hydraulic SOV 1 to close when commanded by the HYD Control Panel SOV switch?

The Tail Rotor Shut Off Valve (TRSOV) is OPEN

Which microswitch(es) in the PCM 2 reservoir will automatically close the TRSOV in the Hydraulic System No.2?

LOW 2 (28%)

During normal operating conditions, what is the state of the Tail Rotor Shut Off Valve (TRSOV) solenoid?

De-energised open

Which of the following statements is correct?

Hydraulic System 1 features a MGB-driven Hydraulic Pump and an electrically driven pump

Which other caution message could be triggered at the same time as the 1 SERVO caution?

EMER LDG PRESS in case of loss of pressure in the system

What is the recovering action in case of a 2 SERVO caution?

Land as soon as practicable

Which of the following conditions could cause the "2 SERVO" caution to be displayed?

The control valve in a servoactuator is jammed or loss of pressure in the hydraulic system No.2

What caution message(s) is(are) displayed in the CAS window when the "PRESS" caution light of the HYD 1 indicator on the HYD Control Panel is illuminated?

1 HYD PRESS, 1 SERVO, EMERG LDG PRESS and 1 HYD PUMP

What caution(s) would you expect to see in the CAS window after a No.2 Hydraulic Pump failure?

2 HYD PUMP

What caution(s) would you expect to see in the CAS window after a No.1 Hydraulic Pump failure?

1 HYD PUMP, 1 SERVO, 1 HYD OIL PRESS, EMERG LDG PRESS

What is the likely cause if a 1 SERVO Caution message is displayed in the CAS window?

A Servo Actuator Control Valve is jammed

What limitations apply to the Pitot Heating system?

Pitot Heater must be ON if OAT≤4°C; Pitot Heater must be OFF if OAT≥10°C

How is the low level condition in the Windshield Washer Reservoir indicated?

W/S WASH LOW caution message in the CAS

What conditions will cause the 1 PITOT HEAT OFF Caution to appear in the CAS window?

The OAT is +4°C or less and the Pitot Heater Copilot Switch is OFF

How are the Wipers parked?

Only by setting the rotary switch to OFF once they reach the parking position

How is an active caution message displayed?

It is displayed in inverse video and then displayed with an amber text after the Master Caution Light (MCL) acknowledgement

Which of the following aural messages is continuously repeated until the condition is corrected?

ROTOR LOW

What happens if a Display Unit (DU) loses its power input?

The other DU in the same pilot’s station automatically reverts to the composite format

What precaution must be observed when replacing, handling, packing and shipping a Modular Avionics Unit (MAU) module?

Standard precautions for Electrostatic Sensitive Devices (ESD) must be observed

When transporting a Modular Avionic Unit (MAU) Module, where must it be stowed?

In a closed safety-ESD container

Where is the MAU Configuration Module (or Aircraft Personality Module) located?

In the NIC Backshell Connector

What is the main function of the Air Management Module?

It is a blank card installed in each empty slot of the MAU or MRC to help airflow control

Which module stores the Personalisation Data for the EPIC System?

Aircraft Configuration Module (IM-950)

Where is the Monitoring Warning Function located?

MAU No.1 and MAU No.2 NIC/PROC Modules

What action must be carried out after a Modular Avionics Unit (MAU) No.2 Database replacement?

Target Load the Flight Software, LDI Database and load the Navigation Database

What is the purpose of the Custom Input/Output (CSIO) Module?

To manage system and sensor data to and from analog and digital subsystems required for the EPIC avionic system

What is the meaning of the "CVR" LED when flashing on the Cockpit Control Unit of the MPFDR (Multi-Purpose Flight Data Recorder)?

The MPFDR is erasing the CVR data

Where is the Cockpit Area Microphone located

In the Instrument Panel

Which displays are controlled by the Cursor Control Device (CCD)?

Display Units (DU) only

Which LRU provides the Monitoring Warning Function?

Both MAUs

For what interfaces does the CUSTOM I/O Module have multiple inputs?

ARINC 429 receivers/transmitters, RS 422 buses and ASCB-D

What does the CONTROL I/O Module interface with?

All Controllers and devices original or standard for the EPIC System

When will the Display Unit (DU) Cooling Fan operate?

When the internal temperature is higher than a predetermined value

Where is the Network Interface Controller and Processor (NIC/PROC) Module located?

MAU 1 and MAU 2

Which of the following conditions causes the electrical synoptic page to be unreliable?

1(2) MAU failure

Which condition(s) cause the FDR to stop recording

WOW microswitch = GND and both Engines = OFF

What is the function of the Database module?

To store a backup of the CMS (Central Maintenance System) and FMS (Flight Management System) software

Where is the Database module installed?

MAU 2

100

If MAU1 has failed, what are the warning messages that are still available to the pilots?

All warning messages are still available, both in the CAS and from the AWG

eliche

Giovanni · 100問 · 2年前

eliche

100問 • 2年前

Giovanni

wer

Giovanni · 100問 · 2年前

wer

100問 • 2年前

Giovanni

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Giovanni · 100問 · 2年前

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