Autoland

Question 1

Autoland requirents

Answer 1

~at least 2 autopilots
~2 ils receivers
~radio altimeter
~auto thrust (if required)

Answer 2

Fail operational /fail active

Question 3

Airport requiremrnts fora autoland

Answer 3

~accurate and calibrated radio aids and ils certified for autoland
~ils protected area
~low visibiilty procedures
~low visibilty procedures in force must be notified to pilots to confirm the airport is set up for LVos

Question 4

Crew

Answer 4

~annual training
~takeoff and landing
~emergency procedure in low vbisibilty
~

Question 5

REQUIREMTNS

Answer 5

~2 AUTOPILOT
~incase pf failure a/c must not deviate from its flight path
~if one AP fails the a/c continues to follow the ILS
~if all AP fails .a/c must be trim

Question 6

Alert height

Answer 6

~decison height
~if any faliure accur beofre deciosn height you MUST go around ,unless you have visual refernce
~

Question 7

Alert height

Answer 7

~it is around 100ft RA
If faliure occurs above alert height»>~go around ,~revert to high minima if possible

~if occurs below alert height
The falure is ignored and the approach is continued
Hte crew are notnotified of the faliure

Question 8

Autoland sys redundancy

Answer 8

~fail operational /active
~fail safe

Question 9

Redundancy

Answer 9

~fail operational/active : is like having 3 pilots,and if ap fails before alert height you can continue
~fail passive,if ap fails beforee alert height you CANT CONTINUE.
But if the FAIL PASSIVE includes a hybrid ,then it becomes a a fail operational ,so in case of an ap failure you can contune

Question 10

Fail passive

Answer 10

~min 2 separates ap
~if one fails ,the other ap contrls the a/c and there is no deviation from the flight path
~if above alert height ,the auto-land can not be carried out

~fail operationa;
3 ap,or 2 ap plus as eprate contorl channel
Wiht a single ap faolure ,auolnd can still be carried out

Question 11

Fail passive

Answer 11

Is inidicated on the FMA by land 2

Question 12

Fail operational

Answer 12

Fail operational is inidcted by land 3

Question 13

Fail operational hybrid

Answer 14

If you have a failure above alert heoght,you either increase you minima or go around

Question 15

Cat 1

Answer 15

~decision heigt not below 200ft
~rvr not less than 550m

Required visual refernce:
~at least 3 consecutive lights of the centreline of the approach light or
~touch down zone lights,centre line lights or runway light or
~a combination of the above

Question 16

Cat2

Answer 16

~decison height below 200 ft and not htna 100ft
~rvr not less than 300 m
Cat 2 LVOs must be inforce

Question 17

Cat 3

Answer 17

Above alert height

~3a :fail passive&raquo_space;land 2
-dh lower than 100ft and not lower than 50 ft
Rvr not less than 200m
~3b> fail operational land 3
-dh lower than 50 ft or no dh
-rvr not less than 75 m
-fail operational roll out control or guidance required

Answer 18

A dowgrade fr mland 3 to land 2 for example

~requires reversion from cat 3b to cat 3a minima
~a/c must be set up for the new category of appraoch