Instruments And Systems

Question 1

3 pressure instruments and what system they use

Answer 1

VSI, ASI, Altimeter

Pitot static system

Question 2

ASI errors

Answer 2

Instrument, pressure, density, compression, mechanical, blockages

Question 3

Different colours airspeed indicator

Answer 3

White = flap operating range
Green = normal operating
Yellow = caution only in still air
Red = Vne
Blue = best single engine speed

Question 4

Static system block errors descent and climb

Answer 4

Descent = over read
Climb = underread

SOD/SUC

Question 5

Pitot system errors descent and climb

Answer 5

Descent = underread

Climb = over read

PUD/POC

Question 6

Altimeter errors

Answer 6

Instrument, pressure, time lag, barometric, Temp/pressure

Question 7

What is a servo assisted altimeter

Answer 7

A more accurate altimeter as no mechanical linkages

Question 8

How does a VSI work

Answer 8

Uses a change in static pressure (inside capsule and casing)

Question 9

What happens to VSI if blocked

Answer 9

Remains zero at all times

Question 10

What is a gyroscope

Answer 10

A body that rotates freely in one or more directions that possesses rigidity and procession

Question 11

What is gyroscopic wander

Answer 11

Any movement away from its fixed direction

Question 12

5 components to a direction indicator

Answer 12

1. Tied gyro
2. Gyro rotates around earths horizontal axis
3. Two gimbals
4. 3 planes of freedom
5. Gyro aligned to true north

Question 13

How is the artificial horizon gyro aligned

Answer 13

Rotates on its vertical axis aligned on the aircrafts vertical axis

Question 14

How is the turn and slip gyro aligned

Answer 14

Rotates about horizontal axis and aligned to a/c lateral axis

Question 15

What is variation

Answer 15

The difference between magnetic and true meridians

Question 16

Variation and magnetic relationship

Answer 16

Variation east, magnetic least

Variation west, magnetic best

Question 17

What is the electronic flight information system

Answer 17

A fully integrated computer based digital navigation system

Question 18

5 main components to the EFIS

Answer 18

1. Cathode ray tubes
2. EFIS control panel
3. Symbol generators
4. EADI
5. EHSI

Question 19

What 3 EHSI modes can show weather

Answer 19

1. Expanded VOR/ILS
2. Expanded NAV
3. Centre map mode

Question 20

5 factors affecting VHF comms

Answer 20

1. Transmitter power
2. Frequency
3. Height of transmitter and receiver
4. Obstructions
5. Fading

Question 21

Order of priority when faced with windshear, GPWS and TCAS

Answer 21

Windshear, GPWS, TCAS

Question 22

3 sources of information input for FMS

Answer 22

1. Stored databases
2. Pilot via CDU
3. Other integrated aircraft systems that feed in

Question 23

Fail passive autopilot system

Answer 23

When a duplex system used and one fails, no out of trim conditions but Pilot must land themselves

Question 24

Examples of systems using hydraulics

Answer 24

Gear, brakes, steering, flight controls

Question 25

Why are hydraulics better than pneumatic systems

Answer 25

Hydraulic fluid incompressible so quicker response, easier to detect leaks

Question 26

Chimed tyres

Answer 26

Ridge on sidewall to divert water away from engines

Question 27

What controls cabin pressure

Answer 27

Cabin outflow valve

Question 28

When does a pilot go onto oxygen

Answer 28

When cabin alt pressure passes 10,000ft