Low Visibility Procedures (LVP) Flashcards
BA Cityflyer Approval for? (RVR AND CAT)
RVR 125M and CAT III approaches
When do LVO come into action? (For the airline)
RVR less than 400m
Approach < CAT 1 Minima
When do LVP come into action? (Airport procedures)
CAT II/III approaches and landings
Takes offs with RVR below 550m
Difference between MIST and FOG?
FOG - Vis less than 1000m
MIST - Vis less than 5000m but greater than 1000m
What is the definition of severe windshear?
Rapid change in wind direction or velocity that results in:
- Airspeed changed more than 15 KIAS
- Vertical Speed changes greater than 500 fpm
When may icing conditions occur? (definition of icing conditions)
- Visible moisture in any form
- Visibility less than 1 statute mile (1,500m)
- Air temperature of 10C or less
ICE, FROST AND RAIN can do what to performance?
Reduces - CLmax (Lift)
Reduces - Stall AoA
Increases - Drag and weight (stall speed) (Can increase by up to 30%)
When and how is RVR reported?
Reported below 1500m RVR at
- Touchdown Zone
- Midpoint
- Stop end
RVR standard reporting is:
0 - 400m 25m steps
400 - 800m 50m steps
800 - 1500m 100m steps
ILS coverage is?
Localiser
Either side of centreline - 10 deg, 25nm
35 deg, 17nm
Glideslope
Either side of centreline - 8 Deg, 10nm
Approach lighting system CAT II/III
900m long
150m and 300m
Last 900m of the runway is what lights?
Last 300m of the runway is what lights?
900m alternating red and white lights
300m red runway centre lights
What are RETILS? What is the spacing?
Rapid Exit Taxiway Indicator Lights
2m lateral spacing on the RETILs
Information Signs are what colour?
Mandatory signs are what colour?
Information: Yellow and Black
Mandatory: Red and White
CAT II/III Holding points - PATTERN A and PATTERN B - PATTERN B holds you further away
Aircraft LVO capabilities
Approach modes?
Approach modes:
APPR 1 - CAT I
APPR 2 - CAT II
AUTOLAND 1 - CAT II / IIIA Autoland (We only get AUTOLAND 1)
AUTOLAND 2 - CAT IIIB
APPR 1 ONLY - Eg PFD Minima Incorrectly Set
APPR 2 ONLY - eg PFD Minima Incorrectly Set
NO AUTOLAND - Autoland has disengaged
CAT III placard in the AC means?
Autoland capable - parallel rudder
When does the Parallel rudder disengage?
- When AP disengages
- Another vertical mode engages
When does the Parallel rudder engage?
- Autoland Engagement (1500ft RA)
- GA with AP engaged - Even if autoland disabled via MCDU
The parallel rudder is a ____ passive system?
Fail Passive
What are the conditions to ARM/ENGAGE autoland?
- Autoland Enabled (MCDU)
- Autopilot / YD engaged
- NAV 1 and NAV 2 tuned to same frequency
- FD Approach Mode selected
- Both PFDs set to correct inbound course (VOR/LOC Preview)
- Both RA / Baro minimums set to RA
- Flap 5 set
AUTOLAND Sequence
Between ____ and _____ RA when Flap is set to 5, AUTOLAND 1 engages. ALIGN and FLARE arm. Parallel rudder self test carried out.
At Approx ____ RA, NOSE UP TRIM applied to prevent nose-down transient in event of autopilot disconnection
At ____ RA, ALIGN engages, RLOUT and RETD arm
At ____ RA, FLARE engages
At ____ RA, RETD engages
At main gear touchdown, RLOUT and D-ROT engage. AT disengages
___ seconds after touchdown, AP disconnects
AUTOLAND Sequence
Between 1500ft and 800ft RA when Flap is set to 5, AUTOLAND 1 engages. ALIGN and FLARE arm. Parallel rudder self test carried out.
At Approx 800ft RA, NOSE UP TRIM applied to prevent nose-down transient in event of autopilot disconnection
At 150ft RA, ALIGN engages, RLOUT and RETD arm
At 50ft RA, FLARE engages
At 30ft RA, RETD engages
At main gear touchdown, RLOUT and D-ROT engage. AT disengages
5 seconds after touchdown, AP disconnects
During an Autoland when does the Auto throttle disconnect?
Main gear touchdown
During an Autoland when does the Autopilot disconnect?
5 seconds after touchdown
For LVO you need?
Crew - Qualified and current
Aircraft - LVO Capable/Serviceable
Airfield - Approved / NOTAMS / Runway