MEPT Aircraft Systems 2 Revision Questions V2.1

Question 1

The Air management System comprises which 3 systems?

Answer 1

Pneumatic System, Cabin Pressurisation and Control System (CPCS) and
Environmental Control System (ECS)

Question 2

The Pressure regulation and shutoff valves (PRSOV) regulate bleed air to what
pressure?

Answer 2

28psig(+/-3)

Question 3

What regulates the bleed air pressure from the engine?

Answer 3

The pressure regulating and shutoff valve

Question 4

What is the a/c ceiling limits with both bleed supplies and a single bleed supply
available?

Answer 4

41,000ft and 31,000ft

Question 5

What effect does the MFD being in reversionary mode have on the pressurisation
system?

Answer 5

The system must be controlled manually by the crew

Question 6

When controlling the pressurisation manually how long should the pilot operate the
UP/DOWN switch?

Answer 6

0.5 secs

Question 7

What happens when the DUMP button is pressed?

Answer 7

The outflow valve opens and the recirculation fans are turned off

Question 8

What is the cabin altitude depressurisation limits in AUTO and Manual DUMP?

Answer 8

AUTO – 12,000ft, manual DUMP – 14,500ft

Question 9

What is the normal operating differential pressure range between cabin interior and
outside?

Answer 9

-0.1 to +8.4psi

Question 10

How is ram air used in the Phenom?

Answer 10

To supply fresh air to the cockpit/cabin and to decrease the bleed air temperature in the
heat exchanger

Question 11

Where is the oxygen cylinder located?

Answer 11

In the nose baggage compartment

Question 12

What happens when the oxygen supply control knob is selected to PAX AUTO?

Answer 12

Enables automatic deployment of passenger oxygen masks when cabin pressure
altitude is above 14 700 ft (+300/-300 ft)

Question 13

What does a white colour indicate on the oxygen display MFD Systems Synoptic page?

Answer 13

Oxygen pressure is lower than 1590 PSI and higher than or equal to 730 PSI

Question 14

What is the purpose of the oxygen supply handle on the oxygen control panel?

Answer 14

To open and close the oxygen cylinder regulator valve

Question 15

What happens when the oxygen supply control knob is selected to PAX OVRD?

Answer 15

Immediate deployment of passenger masks regardless of cabin altitude, if the cable
actuator is in the PUSHED position

Question 16

Above what pressure will the EICAS display a green oxygen pressure?

Answer 16

1590psi

Question 17

With AUTO selected on the Hydraulic System Panel, what system pressure range is
maintained by the hydraulic pump?

Answer 17

2400 – 3000 ± 50 PSI

Question 18

On the MFD System Status Synoptic page, what colour does the readout and pointer
become when the hydraulic pressure drops below 1500psi?

Answer 18

Yellow

Question 19

At what pressure does the Emergency Brake Accumulator Pressure turn yellow on the
synoptic page?

Answer 19

1800psi

Question 20

Where are the hydraulic power pack and reservoir located?

Answer 20

Behind the larger of the 2 forward hatches on the right-hand side of the a/c

Question 21

The electric cooling fan operates when?

Answer 21

Weight On Wheels (WOW) is made, Nose gear down and locked, 1 generator online

Question 22

What is the effect if the hydraulic pump is selected to ON?

Answer 22

The pump runs continuously, plus, the electric motor thermal cut-out and hydraulic oil
over temp protections are lost

Question 23

Where is the electric motor cooling fan located?

Answer 23

Behind the small panel on the right-hand side of the nose

Question 24

What is the function of the shimmy damper?

Answer 24

It moderates rapid left-to-right wheel movement, at high taxy speeds

Question 25

What is the maximum steering angle of the nosewheel using rudder pedals?

Answer 25

18.3°

Question 26

Below what speed is anti-skid protection deactivated?

Answer 26

10kts

Question 27

What is the drop out speed for anti-lock protection, and why?

Answer 27

30kts, to allow differential braking for steering

Question 28

The anti-skid system is unavailable when which part of the braking system is being used?

Answer 28

The emergency/parking brake system

Question 29

When is the touchdown protection system deactivated on both wheels?

Answer 29

Speed greater than 35kts or 3secs after WOW has sensed the ground

Question 30

How many actuations of the emergency/parking brake does the accumulator allow?

Answer 30

6

Question 31

Which 2 safety components are fitted to the main undercarriage wheels?

Answer 31

Fusible plugs and wheel speed transducers.

Question 32

What is the maximum undercarriage VLO?

Answer 32

180 KIAS (Normal) / 250 KIAS (Emergency)

Question 33

How is the landing gear held in place when retracted?

Answer 33

Hydraulic pressure

Question 34

The crew can cancel a landing gear aural warning alert at which flap positions?

Answer 34

Flaps at 0 or 1

Question 35

Where is the PBE located?

Answer 35

The PBE is located behind the co-pilots seat

Question 36

How long will the oxygen cylinders supply last in normal use?

Answer 36

15 minutes

Question 37

Where are the first aid kit and water barrier located?

Answer 37

In the lavatory cabinet

Question 38

Where are the life preservers located?

Answer 38

They are located under all passenger and pilot seats and in the left arm compartment of the side-facing seat

Question 39

Under normal conditions which position is the ELT switch in?

Answer 39

ARMED

Question 40

How is the Emergency Door opened?

Answer 40

By pulling the internal handle and it should be thrown outwards to prevent obstruction in the a/c

Question 41

What are the missing key words to correctly complete this sentence? The main door has _____ green latch and _____ green lock indications.

Answer 41

8 and 2

Question 42

How is the red beacon light is turned on? When either ENG START/STOP switch is

Answer 42

set to the RUN or START position

Question 43

How are the baggage compartment lights turned on and off?

Answer 43

The lights are activated by a press switch and they stay on for 5 minutes or until the door is closed

Question 44

In the event of an electrical emergency which busbar supplies power to the dome light?

Answer 44

Emergency Bus

Question 45

What does the inspection light illuminate?

Answer 45

The left wing leading edge

Question 46

What is the minimum GPU voltage for battery charging?

Answer 46

27V

Question 47

Between what voltages should the GPU operate to prevent the GCU isolating the external power source?

Answer 47

24.5V to 29V DC

Question 48

What is the sequence in the cockpit to connect the GPU to the aircraft system, and start the engine?

Answer 48

Switch ON BATT 1 and BATT 2 Press the GPU button (AVAIL) to connect the GPU to the aircraft system Confirmation is given by the GPU button IN USE indication; the PFD displays the CAS Advisory Message, GPU CONNECTED When the engine has completed the start-up cycle, disconnect the GPU from the system by pushing the GPU switch again.

Question 49

With one engine running, what is the effect of plugging the GPU into the a/c?

Answer 49

Nothing. The GPU cannot supply power to the a/c as the operating generator has priority

Question 50

How long should be left between each engine start to allow the batteries recover some charge?

Answer 50

2 minutes

Question 51

When the pilot pushes the GPU switch IN, which busbar is the GPU connected to and what are the indications in the cockpit?

Answer 51

Central Bus, GPU switch indicates IN USE(green), ELEC synoptic shows GPU symbol green with green line to Central Bus.

Question 52

What action should the pilot take if the BATT DISCHARGE CAS message is triggered during ground operation with GPU connected?

Answer 52

BATT 1 & 2 SWITCHES OFF

Question 53

Which busbars have a power supply in the electrical emergency configuration?

Answer 53

HOT BATT BUS 1 & 2, EMERG BUS and CENTRAL BUS

Question 54

What are the power supply/generation requirements in order for the SHED BUS to be energised?

Answer 54

A GPU must be connected or BOTH generators must be on-line.

Question 55

In the event of total loss of the main power generating system how long does the battery system guarantee power for and which busbar does it power?

Answer 55

45mins, EMERG BUS

Question 56

What electrical system action should be taken if there is a prolonged wait to start the first engine when starting using batteries power only?

Answer 56

Select ELEC EMER to conserve batteries voltage as only the EMER BUS is energised

Question 57

In normal operation which busbars does SG1 power?

Answer 57

DC BUS 1, EMERGENCY BUS and HOT BATT BUS 1

Question 58

In normal operation which busbars does SG2 power?

Answer 58

DC BUS 2, CENTRAL BUS, SHED BUS and HOT BATT BUS 2

Question 59

SHED BUS also provides DC power for which systems?

Answer 59

Air conditioning compressor, Audio/video entertainment system, Cabin evaporator fan, Compartment light, Toilet flush

Question 60

What are the generator load limits in flight above/below 34 000 ft?

Answer 60

250 A/300 A