B767: ILS - AUTOLAND LOGIC

Question 1

APP PUSHED

Answer 1

• Other two autopilots armed (if AP ON already)
• LOC and GS armed
• LOC will only capture when intercept within 120*
• either G/S or LOC can be captured first (except JA605F)

Question 2

@ G/S capture

Answer 2

Go-around mode is armed (or when flaps not up)

Question 3

1500’

Answer 3

• FLARE and ROLLOUT modes armed
• ALL autopilots engage (powered by 3 separate sources)
• ASA indicates autoland status (LAND 3 or 2)
• Rudder control provided by AP

Question 4

When all AP’s are engaged by 3 separate sources

Answer 4

LEFT FCC and CAPT INST = LEFT MAIN BUS

Center FCC = STANDBY/BATTERY SYS

RIGHT FCC and FO INST = RIGHT MAIN BUS

Question 5

500’

Answer 5

• Runway alignment
• Introduces a slip of up to 2* AOB if crab angle >5*
• uptrim bias of 2 units (for LAND 3 situation)

Question 6

200’

Answer 6

Simply,

• Bus isolation
• ASA inhibited except for ‘No Autoland’

More info,
- ABOVE 200’ = Loss of a generator results in B-T-B to CLOSE and left system to power center AP (NO LAND 3)

• BELOW 200’ = Loss of a generator results in B-T-B to OPEN and the autoland to finish using the remaining systems
• below this height, ASA will not change unless a NO AUTOLAND conditions exists

Question 7

100’

Answer 7

• Uptrim bias 2 units (only for LAND 2 operations)

Question 8

50’

Answer 8

FLARE capture

Question 9

15’

Answer 9

IDLE capture

Question 10

5’

Answer 10

ROLLOUT capture

Question 11

Touchdown

Answer 11

• Autopilot maintains LOC w/ rudder nose wheel
• ROLLOUT continues until full stop or AP disengaged
• Auto-throttle disconnects when either thrust reverse is selected to reverse