Chapter 6: Cockpit Electronics

Question 1

what does electronic flight instrument system (EFIS) consist of?

Answer 1

upper: electronic attitude and direction indicator (EADI)

lower: electronic horizontal situation indicator (EHSI)

Question 2

what does EADI screen display?

Answer 2

attitude in pitch and roll

flight director bars, ILS glideslope, localiser deviation

Question 3

at what height will EADI display radio altitude in digital/analog format?

Answer 3

digital: 1000 - 2500 ft

analog: below 1000ft

Question 4

colour code for display feature of EADI

Answer 4

warning - red
caution - amber
earth - brown
sky - blue
engaged modes - green
ILS deviation pointer - purple
flight bar - purple/green

Question 5

colour code for precipitation im mm/hr

Answer 5

black: 0 - 1
green: 1 - 4
yellow: 4 - 12
red: 12 - 50
purple: above 50

Question 6

colour code for turbulence

Answer 6

white

Question 7

what does a electronic horizontal situation indicator do?

Answer 7

display flight navigational information, 9 modes

Question 8

modes of EHSI

Answer 8

1) map
2) ctr map
3) plan
4) full VOR/ILS
5) exp VOR/ILS
6) exp nav/full nav

Question 9

what is EICAS?

Answer 9

engine indication & crew alerting system

Question 10

what does the EICAS display on both upper and lower screen?

Answer 10

upper screen: primary display (EPR, N1, EGT)

lower: secondary display (abnormal engine ops)

Question 11

2 page of the EICAS

Answer 11

operational page: during flight

maintenance page: for fixing, only on ground

Question 12

what is ARINC?

Answer 12

aeronautical radio incorporated

provide standard guidelines for electronic systems

Question 13

2 common data bus standard of ARINC

Answer 13

ARINC 429 & 629

Question 14

what is BITE?

Answer 14

built in test equipment

Question 15

purpose of BITE

Answer 15

provide fault detection/isolation & operational verification after defect repair

Question 16

how does BITE work?

Answer 16

defect sensed > sends control signal to isolate defect

Question 17

systems that BITE works on

Answer 17

EICAS
VHF & HF comms radio
altimeter
transponder

Question 18

operating modes for electronic centralised aircraft monitoring (ECAM)

Answer 18

normal, advisory, failure, manual

Question 19

what is FMS?

Answer 19

flight management system

Question 20

purpose of FMS

Answer 20

reduce crew workload, achieve best fuel economy

Question 21

what does the FMS do?

Answer 21

guides the aircraft navigation vertically & laterally to achieve planned altitude

Question 22

what does the FMS need to operate?

Answer 22

navigational data from systems like VOR ILS DME

Question 23

how does the flight crew link with the FMS?

Answer 23

control display unit (CDU)

Question 24

what does the CDU consist of?

Answer 24

1) screen
2) line select keys
3) annuciators
4) alpha-numeric numbers
5) function and mode keys