Advanced Instruments

Question 1

What are the main outputs of the radio altimeter ?

Answer 1

GPWS- ground proximity warning system

TCAS - Traffic collision alert system

Autopilot- go around, ILS deviation, autoland

Question 2

What is wave frequency of the signal for radio altimeter ?

Answer 2

4300 SHZ

Question 3

By how much does the wave frequency modulate ?

Answer 3

+/-50 MHZ

Question 4

How wide is the radio altimeter beam width ?

Answer 4

30-60 degrees

Question 5

How long is the navigational database valid for ?

Answer 5

28 day period

Question 6

What are the two display types on EFIS ?

Answer 6

CRT- cathode ray tube

LCD- liquid crystal display

Question 7

What is EADI ?

Answer 7

Electronic attitude director indicator.

This is your primary flight display

Question 8

What is EHIS ?

Answer 8

Electron horizon indicator system

The is your Nav screen

Question 9

How is your FMS information displayed ?

Answer 9

On a EFIS (electronic flight information system) via a symbol generator

Question 10

What are the colours of the EFIS display ?

Answer 10

Green- current active, engaged modes
White- Armed modes, range scales, current status and data.
Magenta- Current route and fly to info
Cyan- general non important and background information
Black- background or OFF
Red- warnings
Amber- Alerts

Question 11

What are the types of display available for EHSI or NavData ?

Answer 11

MAP
VOR
Approach/ILS

Question 12

What language do radios get programmed in ?

Answer 12

Octal - 1 to 8

Question 13

What is the software used in computers ?

Answer 13

RTCA/DO-1788

EUROCAE ED-12B

Question 14

What are the lateral modes for flight path mode ?

Answer 14

HDG
VOR-tracks cone of confusion 
LOC - localiser - ILS
LNAV - follows FMS lateral position plan 
Rollout - keeps centre line on auto land

Question 15

What are the 3 control laws ?

Answer 15

Normal - standard law used. High protection

Alternate - No AP, fair bit of protection

Direct - direction relationship. No protection

Law keep throughout flight envelope

Question 16

What are the two actuators used ?

Answer 16

Series actuator - Airbus: control stick remains in static position when control surface is moving.

Parallel actuator - Boeing: control column moves with control surface

Question 17

What are the components of the AP?

Think AACCSS

Answer 17

Actuators 
Amplifiers
Computers 
Comparators 
Servo actuators 
Sensors

Question 18

What is size of surface deflection about ?

Answer 18

A/C attitude.

Size error
Rate of error
Rate of deviation

Question 19

What are the inputs to stall warning computer ?

Answer 19

AOA 
ADC 
CONFIG
IRS
THRUST 
AIR AND GROUND LOGIC

Question 20

What is the CAT 1 decision height and RVR ?

Answer 20

200ft and 550m

Question 21

What is the CAT 2 decision height and RVR ?

Answer 21

100ft and 350m (RVR)

Question 22

What is the CAT 3(A) decision height and RVR ?

Answer 22

50ft and 200m

Question 23

What is the CAT 3(B) decision height and RVR ?

Answer 23

0ft and 75m

Question 24

What is the CAT 3(C) decision height and RVR ?

Answer 24

0ft and 0m

Question 25

What is the name of the system which controls the older auto-throttle ?

Answer 25

Hydro-mechanical engine control unit (MECU)

Calculations done by:
Power management computer (PMC)

Question 26

What is the name of the system which controls the new engine and auto throttle system ?

Answer 26

FADEC - full authority digital engine control