787 Tech Paper

Question 1

Once cleared for pushback for takeoff, the captain noticed an airport vehicle parked a few meters from the right wingtip. What is the clearance required from the wingtip to turn away from the obstacle?

Answer 1

15ft (4.6m)

Question 2

During flight, the message: PACK MODE L is displayed in the EICAS and STBY COOLING in amber on the AIR synoptic page. When the aircraft climbs to a higher altitude and the OAT is lower, only the PACK MODE L message is removed.

Answer 2

Pack cooling capacity may be lower than in normal mode and may result in warm flight deck and cabin temperatures at lower altitudes

Question 3

How long is operations with EGT in the Amber band acceptable for single engine operations? [Vol Il Engine, APU Fire Protection Sys.7.20.3]

Answer 3

10 minutes

Question 4

Choose the correct statement regarding ground operations.

Answer 4

Packs and lower recirc fans must be OFF before and during the use of external conditioned air.

Question 5

In flight, all electrical power to the Captain’s and First Officer’s flight instruments are lost. The captain’s flight instruments and essential equipment for flight controls, navigation and communication

Answer 5

Will be energised by standby power from the RAT immediately

Question 6

The 787 Air conditioning system supports the transport of live animals in the

Answer 6

FWD and bulk cargo compartment only

Question 7

For pressurization, the landing altitude barometric pressure correction comes from

Answer 7

Captain’s altimeter setting

Question 8

On the ground, both FWD external power are supplying 115 Vac distribution buses which energize the four 235 Vac buses. APU and both engine are off. When the APU is started and the APU generators are on

Electrical Systems 6.20.8
CBT APU Power 6/7

Answer 8

The external power transitions from ON to AVAIL. APU supplies the four Vac buses.

Question 9

The left and right hydraulic systems each have a demand pump known as electric motor-driven pump (EMP). With the pump selector in the AUTO position, these L and R demand pumps operate under which of the following conditions?

Hydraulics Sys.13.20.2

Answer 9

1. During descent from when the gear lever is down and radio altitude is less than 1000 feet until groundspeed is less than 40 knots.
2. System low pressure
3. From takeoff thrust set to flaps retracted
4. On ground, for 1st 3 minutes after 2nd engine start
5. Thrust reverser operation

Question 10

What does the Flight Control system EICAS message FLIGHT CONTROL MODE indicate?

Answer 10

Flight control system is in secondary mode

Question 11

What EICAS message is displayed when the flight control system is in direct mode?

Answer 11

PRI FLIGHT COMPUTERS

Question 12

What is the power/drive source for the Hydraulic System Primary Pumps?

Answer 12

Engine driven pumps

Question 13

Which of the following have fire detection & extinguishing system that include fire & overheat detection as well as fire extinguishing systems?

Answer 13

Engines, APU, Cargo compartments & lavatories.

Question 14

On the ground, the cabin temperature is 30 degress C. Setting FWD CARGO FLOW selector to LOW will

Answer 14

Prioritise cabin cooling over cargo compartment ventilation

Question 15

Select the correct statement about external power. Electrical Systems 6.20.6

Answer 15

AFT external power cannot power the main AC buses

Question 16

During a Go-Around with one engine inoperative, the PACK L+R messages is displayed momentarily 2.20.3

Answer 16

No crew action is required as both packs could temporarily load shed when auto-gap is needed

Question 17

How do the flaperons move to provide more lift to improve slow speed performance? [Vol II Flight Controls.9.20.2]

Answer 17

The flaperons droop with the trailing edge flaps

Question 18

When does the FLARE (armed) (white) FMA display on the PFD?

[Vol Il Automatic Flight Sys.4.20.10]

Answer 18

During Autoland below 1500 feet RA

Question 19

What EICAS advisory message indicates an automatic reversion or manual selection to the alternate mode? Engine, APU Sys.7.20.5

Answer 19

ENG EEC MODE (L, R)

Question 20

Thrust Control Malfunction Accommodation is an EEC function that provides thrust asymmetry protection under what circumstances?

[Vol Il Engine, APU Sys.7.20.9]

Answer 20

Provides protection against idle thrust asymmetry while on the ground.

Question 21

Wheel to rudder cross-tie is available in which mode?

9.20.18-19

A wheel to rudder cross-tie function provides the capability of being able to control the initial effects of an engine failure using control wheel inputs only

Answer 21

Secondary and direct

Question 22

Do rudder pedals move with rudder trim operations?

[Vol II Flight Controls.9.10.6]

Answer 22

Yes

Question 23

How is the humidification system controlled when the HUMID switch is ON?

Air Sys.2.20.6 (Can’t find exact reference)

Answer 23

Automatically

Question 24

During ground starts, which one of the following malfunctions will Abort the Autostart sequence?

[Vol Il Engine, APU Sys.7.20.15]

Answer 24

The loss of both starters

Question 25

The airplane brake system is supplied by electrical power directly from which of the following sources

6.20.4, 6.20.6

Answer 25

Primary supply from the 28 Vdc bus system, backup supply from the main battery

Question 26

What power source is available in the event of electrical power loss on the left VHF radio and left TCP?

Communications Sys.5.20.3

Answer 26

Standby power

Question 27

What does the Alternate Ventilation system do?

Air Systems 2.20.4

Answer 27

It supplies fresh air to the flight deck and cabin if all packs have failed.

Question 28

When to the runway edge lines appear and disappear on the HUD?

10.22.6

Answer 28

300ft RA and removed at 60ft RA

Question 29

What provides power to the 28 Vdc system when the main AC buses are energized?

Electrical Systems 6.20.8

Answer 29

Power conversion devices

Question 30

What are the major components that make up the Inertial Reference System on the 787?

11.20.3

Answer 30

Inertial Reference and Attitude and Heading Reference Units

IR & AHRU

Question 31

When are the three pitot probes and the total air temperature (TAT) probe electrically heated for anti-ice protection?

Anti-lce and Rain Sys.3.20.4

Answer 31

The pitot probes are heated when either engine is operating and the TAT probe is heated in-flight.

Question 32

Which statement is NOT correct regarding the ENGINE ANTI-ICE ice selectors?

Anti-lce and Rain Sys.3.10.2, 3.20.1. Engines, APU 7.20.10

Answer 32

Approach idle is selected by the EEC only when the Engine Anti-lce selector is ON.

Question 33

In flight, all electrical power to the Captain’s and First Officer’s flight instruments are lost. The captain’s flight instruments and essential equipment for flight controls, navigation and communication

6.20.4

Answer 33

Will be energized by standby power from the main battery immediately.

Question 34

The 787 Air conditioning system supports the transport of live animals in the

2.20.6

Answer 34

FWD and Bulk cargo compartments

Question 35

For automatic flight approach and landing, which statement is correct?

Automatic Flight Sys.4.20.18

Answer 35

Pushing the LOC/FAC switch arms the AFDS to capture and maintain an approach lateral flight path to a runway using an ILS localizer beam or a lateral path provided by the FMC

Question 36

What is one condition that will cause the spoilers to extend automatically when the speedbrake lever is NOT in the ARMED position?

Answer 36

1. When the airplane is on the ground and both thrust reverse levers are moved to the reverse idle detent.
2. When the airplane is on the ground with groundspeed above 85 knots, and either thrust lever was previously in the takeoff range, and then both thrust levers are moved to the idle range.

Question 37

Which statement accurately describes the ADF displays?

[Vol II Flight Management, Navigation.11.20.13]

Answer 37

ADFs are not installed on the 787. (Note: SIA 787-10 does not have ADF)

Question 38

The autopilot is available in what Primary Flight Control System Modes?

Flight Controls.9.20.6-10

Answer 38

Normal only

Question 39

What is the limit of nose wheel steering turn when using the rudder pedals?

14.20.3

Answer 39

8 degrees in either direction

Question 40

According to turning radius information, what is the minimum pavement width required for a 180° turn?

Airplane General Sys.1.10.2

Answer 40

176 feet 7 inches (53.8 Meters)

Question 41

When does runway alignment occur on approach when crosswinds require more than 10 degrees of crab angle?

Automatic Flight Sys.4.20.20

Answer 41

At 500 feet AGL.

Question 42

Which statement accurately describes an element of the 787 engine fire & overheat detection system?

[Vol Il Fire Protection .8.20.1]

Answer 42

There are multiple dual-channel detector assemblies in each engine nacelle. Each detector channel provides both fire & overheat detection