Low Visibility Procedures Flashcards by Heather Argile

What is the difference between FOG & MIST?

Fog - Visibility is less than 1000m
Mist - Visibility is between 1000m and 5000m

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What is the definition of Windshear?

Airspeed changes greater than 15kts
OR
Vertical Speed changes greater than 500ft/min

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What is the difference between LVPs and LVOs?

LVOs - Operator Procedures (Airline)
LVPs - Procedures at the Airport that ensure safe operations

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What type of system is BACF AUTOLAND?

Fail Passive

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What is the difference between Fail Passive & Fail Operational?

FAIL PASSIVE - in the event of a failure there is no deviation from flight path or attitude but the system can no longer operate

FAIL OPERATIONAL - System can still operate in the event of a failure but becomes a Fail Passive System

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What is the Minimum RVR for a CAT I Approach?

550m

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What is the Minimum RVR for a CAT II Approach?

300m

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What is the Minimum RVR for a CAT III Approach?

200m

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What indicates that only 900m of Runway is remaining?

Red & White Alternating Centreline Lights

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What colour are the taxiway lights in the ILS Sensitive Area?

Green & Yellow Alternating

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What are the Minima for CAT I, II & III Approaches?

CAT I - 550m, 200ft BARO
CAT II - 300m RVR, 100ft RA
CAT IIIA - 200m RVR, 50ft RA

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What is the definition of Decision Height?

The height in a precision approach at which point a missed approach much be initiated if the required visual references have not been established

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Below what visibility is RVR reported?

1500m

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What is the acceptable visual reference for a CAT II Approach?

Three consecutive lights

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What is the acceptable visual reference for a CAT II Approach?

Three consecutive lights are
AND
At least one lateral element (eg. an approach lighting crossbar or landing threshold)

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What do flashing yellow lights on the side of the taxiway indicate (wigwams)?

Proximity to the Runway

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What is the Approach Ban?

If RVR below the required before 1000ft - Must Go around

If RVR falls below the required after 1000ft - You can continue to Minimas until the decision height (as RVR become advisory)

If you do not see the required Visual reference at Decision Height, you must go around

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What can you do to maximise the visual segment on approach?

Position Seat correctly
Lights to a minimum in the Cockpit
Strobe & Landing Lights OFF (Plan when to turn them ON)

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What comprises the Rapid Exit Taxiway Lighting?

3 yellow lights - 300m
2 yellow lights - 200m
1 yellow light - 100m

Alternating Green & Yellow Lights

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What is the Takeoff Thrust Setting used for LVOs?

T/O 1 with NO flex
STATIC START

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What colour are the Threshold Lights?

Landing End - Green
Stop End - Red

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What is the length of the Runway Touchdown Zone Lighting?

900m

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How long is the section of red barrettes and where are they located in relation to the threshold?

The last 300m prior to the threshold

What is the spacing between runway centreline lights for CAT I (Instrument Approach Approved) Runways?

30m

What is the spacing between runway centreline lights for CAT II & CATIII (Instrument Approach Approved) Runways?

15m

When is RVR given in 25m increments?

When RVR is less than 400m

When is RVR given in 100m increments?

When RVR is between 800 & 1500m

If there is an aircraft Malfunction above 1000ft requiring pilot action, what do you do?

If the actions cannot be completed before 1000ft, GO AROUND

What effect does failure of part of the airfield lighting system have on the minima?

RVR is affected But DH is unaffected

Can you take off when LVO procedures are enforced if there are no reported RVR values available?

Yes, RVR can be determined by Pilot Assessment

What Colour are the Runway Centreline Lights?

White Red & White (with 900m remaining) Red (Last 300m)

When is a takeoff Alternate Required?

WX at DEPT Airport is Below Landing Minima Takeoff Alternate must be: MAX 1hr away OEI Cruise Speed (250kts) WX must be above minima for +/- 1hr of ETA

What are the Planning Minima requirements for Destination, Alternate etc.?

WX must be Suitable for the Category Above for +/- 1hr of ETA CAT II/III - CAT I RVR CAT I - NPA RVR/VIS, Ceiling greater than or equal to MDH NPA - RVR/VIS + 1000m, Ceiling greater than or equal to MDH +200ft Circling - CIRCLING

If there is an aircraft Malfunction below 1000ft requiring pilot action, what do you do?

GO AROUND Unless Autothrottle Failure - Pilots can choose whether or not to continue

What is the length of the runway touchdown Zone lighting?

900m

What Spacing are the Touchdown Markings and what is the total length of the markings?

150m spacing Total Length - 900m

What Colour are Runway Edge Lights?

White Red (Before threshold or stopwatch) Yellow (CAUTION)

What do the large white rectangles on the runway indicate?

Aiming Point/Touchdown Markers

What is the Autobrake Setting for an LVO Landing?

Medium

What are Stop bars?

A lit bar across the taxi way at holding points - must never be crossed when lit

What colour are Taxiway Lights?

GREEN

What colour are Taxiway Edge Lights?

Blue

What conditions do you need for a PRACTICE Autoland?

Cat I or better

At least 1 Destination Alternate must be selected UNLESS:

Duration of Flight is less than 6 hours 2 Separate Runways are available and usable at the DESTINATION WX at Destination for +/- 1hr of ETA Ceiling will be at least 200ft or Circling Height +500ft (Whichever is greater) & Visibility 5000m Alternate is replaced by FUEL permitting Holding for 15 minutes at 1500ft above the Destination in Icing Conditions

When do you need 2 Destination Alternates?

WX at Destination for +/- 1hr of ETA will be below Planning Minima OR No Met information is Available

When must Autoland be disabled in the MCDU?

For a CAT II Manual Landing

Taxi speed Limits in Low Vis

10kts (5kts for Turns)

LVO Takeoff with RVR of less than 150m must have:

90m Visual Segment (6 lights - as spaced 15m apart)

When should the Taxi Checklist and Before Takeoff Checklist be completed during LVOs?

At the Holding point, when not moving

What must you do when entering the runway during LVOs?

Set the transponder to TA/RA to check the runway is clear

What do you have to support you for CAT II & CAT III Descent Briefs?

Aide Memoirs

What RVR is reported?

TOUCHDOWN, MID, STOP END

CAT II/III Approach Lighting must have how many Crossbars?

2 1 - at 150m 2 - at 300m

What RVR is controlling?

Touchdown

What does relevant mean with respect to controlling RVR?

That the respective part of the runway will be used during the high-speed phase of the landing down to 60kts

What is the acceptable visual reference for a CAT I Approach?

Any one of the following lights/elements is visible and identifiable: Element of the Approaching Lighting System Threshold Threshold Marking Threshold Light Threshold Identification Lights Visual Glide Slope INdicator Touchdown Zone or Markings Touchdown Zone Lights Runway Edge Lights