Low Visibility Procedures

Question 1

How is LVTO defined?

Answer 1

Means a take-off with less than 550 meters RVR

Question 2

When would an autoland warning light trigger?

Answer 2

ALL BELOW 200ft WITH AT LEAST 1 AP & LAND/FLARE

• LOC deviation 1/4 dot + A/C above 15ft RA
• GLIDE deviation 1 dot + A/C above 100ft RA
• Loss of LOC above 15ft RA
• RA difference is greater than 15ft
• Last AP disengages
• FMGS detects long flare
• FMGS detects untimely flare

Question 3

What is the difference between a fail-operational and fail-passive system?

Answer 3

FAIL-OPERATIONAL failure below AH (100’), approach, flare & landing completed automatically.

FAIL-PASSIVE AP will disconnect with no significant out of trim but landing will not be automatic. Pilot MUST assume control and land if visual references allow and is safe to do so.

Question 4

On a autoland, what happens below 1000’ with regards to aircraft status and task-sharing?

Answer 4

• 1000’ fully configured and stable
• 800’ LANDING INHIBIT (inhibits some warnings/cautions
• 700’ FMGC data lock
• 500’ STABLE
• 400’ FCU lock
• 350’ LAND FMA
• 200’ AUTOLAND RED light active
• 100’ CALL “ONE HUNDRED” reply “CONTINUE”
• 40’ FLARE FMA
• 30’ THR IDLE FMA
• 10’ ROLLOUT

Question 5

What is the lowest minima for a normal CATII approach?

Answer 5

DH 100’
RVR >300 m

Question 6

Is a Special Authorization CATII approach possible in SAS Connect?

Answer 6

SAS Connect is not approved to conduct special authorization CAT 1 / CAT 2 approaches.

Question 7

What is the lowest minima for a CATIII approach?

Answer 7

Fail-operational: DH 0’ / RVR >75 m (CAT 3 DUAL)

Fail-passive: DH 50’ / RVR >175 m (CAT 3 SINGLE)

Question 8

What is the lowest minima for a CATII approach with manual landing?

Answer 8

Same as a normal CATII approach with automatic landing

DH 100’
RVR >300 m

Question 9

What is the minimum disconnect height of AP on a CAT II Manual landing?

Answer 9

Min A/P disconnect: 80 ft

Question 10

What is recommended use of autobrakes on a low viz landing?

Answer 10

LO recommended for normal operations
MEDIUM recommended for short or contaminated runways

Question 11

What are the wind limitations for autoland (all engines operating)?

Answer 11

Headwind 30
Crosswind 20
Tailwind 10

(they are the same regardless of CAT3/CAT2/CAT2SA/CAT2 Manual)

Question 12

What are the wind limitations for autoland (single engine)?

Answer 12

If relying on auto-rollout: Crosswind 15 (only difference to all engines operating)

Question 13

What is the lowest RVR for a LVTO?

Answer 13

125 m

Question 14

What is required for a LVTO with 125 meters? (the lowest RVR)

Answer 14

HI RCLL max 15 m spacing

HI REDL max 60 m spacing

Multiple RVR

Question 15

What is the requirement for RVR in the 2nd and 3rd segment? (if reported and relevant)

Answer 15

2nd: 75 meters (or 125 m if AP not used for rollout)
3rd: 75 meters

Question 16

What needs to be considered for autoland if
- NOSE WHEEL STEERING or
- ANTI-SKID U/S or
- if landing on contaminated RWY?

Answer 16

After touchdown:
If auto rollout is not satisfactory, disconnect A/P.

Min RVR 1st segment : 200 m
Min RVR 2nd segment: 125 m

Question 17

What is considered a Type A instrument approach?

Answer 17

Instrument approach operation with MDH or DH at or above 250 ft

Question 18

What is considered a Type B instrument approach?

Answer 18

Instrument approach operation with DH below 200 ft. For example CATI/CATII/CATIII