Low Visibility

Question 1

Definition contaminated runway

Answer 1

> 25% of required rwy (length and width) covered with:

• > 3mm water, slush or loose snow
• compacted snow
• ice or wet ice

Question 2

Low Vis T/O if

Answer 2

RVR < 400 m

Question 3

Which elements have to be functioning for T/O less than 400m but more than 300 m ?

Answer 3

REDL and RCLM (day)
REDL and RENL (night)
RCLL and RENL (night)

Question 4

Touchdown zone

Answer 4

900m from threshold

Question 5

Runway edge lights spacing?

Answer 5

200 ft (60m)

Question 6

Runway edge light change color at the end?

Answer 6

2000ft (600 m) before DER they turn amber

Question 7

Runway centerline lights change color at the end?

Answer 7

Alternating red / white between 900m and 300 m (3000 ft and 1000ft)

Red last 300m (1000ft)

Question 8

Hierarchy of reported visibility

Answer 8

RVR
Aerodrome visibility
Pilot observed visibility

Question 9

Standard Minimums- Decision Height / RVR

Answer 9

Cat I 200 ft / 550 m
Cat I LTS 200ft / 400 m

Cat II 100 ft / 300 m

CatIIIA <100 ft / 200 m
Cat IIIB <100 ft / 150 m
<50 ft / 125 m
No DH / 75 m

Question 10

Minimum RVR for T/O?

Answer 10

125 m

Question 11

For a take off below 200 m consider following:

Answer 11

Low vis in force
Pilots trained
Check for country restictions

RL including edge lights
CL
RVR for all relevant sectors 
CM 1 PF
Max crosswind 25 kts
Rwy not contaminated 
Auto brake System

Question 12

Reset of DH in case of malfunction allowed down to

Answer 12

1000 ft AGL

Question 13

Below alert height (200ft AGL) go around if

Answer 13

Any master caution with warning occurs:

No autoland
Autopilot
Autothrottle disc
Speedbrake extended

Question 14

ATC phrasiology if TO is delayed on rwy

Answer 14

„rolling“ should be used to announce the take off roll

Question 15

TO alternate if

Answer 15

The weather at departure aerodrome is below one-engine out minimum

Shall be located within 435 NM

Question 16

Autoland / CM 1 PF compulsory for

Answer 16

Cat I LTS
Cat II (manual landing also ok)
Cat III

Question 17

Required visual reference to continue below DA

Non-precision, Cat I, LTS Cat I

Answer 17

• Elements of the APL
• rwy threshold markings or lights
• Visual slope indicator (VASI, PAPI etc)
• TDZ markings or lights
• rwy edge lights

Question 18

Manual landing on Cat II approach?

Answer 18

Yes, if autoland not available

Question 19

Required visual reference to continue below DA

Cat IIIa

Answer 19

At least 3 consecutive lights or a combination of these:

Centerline of APL
TDZL
rwy CLL
REDL

and maintained

Question 20

Required visual reference to continue below DA

Cat IIIb with DH

Answer 20

One element of CLL is attained and maintained

Question 21

Required visual reference to continue below DA

Cat IIIb without DH

Answer 21

Decision to continue does not depend on visual reference

Question 22

Alert Height is

Answer 22

Height above which a CatIII would be aborted in case of malfunction.
Below AH landing would be made unless alter is accompanied by master caution

Question 23

What is the alert height for a B777?

Answer 23

200 ft

Question 24

MABH

Answer 24

Minimum approach break-off height s 25ft for the B777

Question 25

Which elements have to be functioning for T/O less than 300m but more than 150 m?

Answer 25

REDL and RCLL

Question 26

Which elements have to be functioning for T/O with RVR of 125 m?

Answer 26

High intensity RCLL < 15 m
and
HI REDL < 60m

Question 27

Additional requirements for T/O with RVR 125m?

Answer 27

• RVR for all segments ok

- 90m segment visible from cockpit

Question 28

Low Vis USA (visibility < 1600 ft)

Requirements

Answer 28

CM 1 PF
Crew Low vis trained

2 RVRs available
1600 -1000 ft: HI REDL or RCLL or RCLM (day)

1000 - 500ft:
HI REDL and RCLL

Question 29

Required visual reference to continue below DA

Cat II

Answer 29

A segment of at least 3 consecutive lights of the approach centerline lights, touchdown zone lights, rwy centerline lights, rwy edge lights or a combination.

Also a lateral element is required (approach lighting crossbar, landing threshold or a barrette of tdz lighting)

and can be maintained