Which items shall be considered during Low Visibility Operations?
- Flight Crew qualified to perform Low Visibility Operations;
- CM1 is Pilot Flying;
- Review aerodrome layout and possible taxi routes;
- Recommended taxi speed max. 10 kt;
- Checklist should not be performed during taxiing;
- Loss of visual reference during take-off (take-off shall be discontinued below 80 kt)
Low Visibility Procedures are generally put into force at aerodromes authorized for CAT II/III operations when:
- The RVR falls below 400 Metres and/or
- The cloud base falls below 200ft.
- Lower than Standard CAT I and other than Standard CAT II operations are not permitted.
LVO qualified crews may reduce the take-off minima to…
125 meters, provided that the following requirements are met:
- Low Visibility Procedures (LVP) are in force;
- High Intensity Runway Centerline lights spaced 15m or less;
- High Intensity Edge lights spaced 60m or less are in operation;
- The reported RVR is at or above the required take-off RVR as shown on the LIDO CCI sections for LVOPS Minima page.
RVR values for TD, MP and RO (where available), shall be obtained before…
The Approach Ban Point
Pilot Monitoring standard callout at AH (200 feet RA).
“Alert Height”
What is required if it is not possible to return to the departure airport?
Take-off Alternate
If loss of visual reference occurs above 80 knots the pilot should perform an RTO?
No! Take-off shall be discontinued if required visual references are lost BELOW 80 knots.
Is the use of reduced thrust take-off (Assumed Temperature) authorized when Low Visibility Procedures are in forced?
Yes!
What other itens shall be included in addition to the normal Approach Briefing during LVO?
- Confirmation that both crew members are CAT II/III qualified and authorised;
- Check aircraft system status;
- Review and set applicable DH for CAT II/III and downgraded CAT I DA on barometric altimeter;
- Review task assigment and procedures in case of a malfunction;
- Review procedures for downgrading;
- Review approach ban, ATC calls required and LVP runway exits;
- Check seat position and flight deck lighting;
- APU, Autobrake as required.
Maximum Allowable Wind Speeds (including gusts) during Automatic Landing:
Headwind - 25 knots
Tailwind - 15 knots
Crosswind - 25 knots (15 - USA)
Maximum and Minimum glideslope angle on autoland operations:
3.25° degrees and 2.5° degrees.
Flap settings for Automatic Landings on 77L and 77W:
Flaps 20 or 30
Flap settings for Automatic Landings on 77F:
Flaps 20, 25 or 30
Automatic Landings can be made with one engine inoperative?
Yes!
Overweight Autolands Policy
Overweight autolands are not recommended. Autopilots are not certified for automatic landings above maximum landing weight.
According to the FCTM, can an Overweight Autoland be performed?
Only in an Emergency, if the pilot determine that it’s the safest course of action. But it should closely monitored and some factors considered:
- Touchdown may be beyond the normal one; allow for additional landing distance;
- Higher than normal sink rates may result in exceeding structural limits;
- Plan for a go-around or manual landing if autoland performance is unsatisfactory.
What is the minimum ceiling authorized for take-off during LVO?
Zero!
Visual Reference at DH when performing a CAT 2:
3 Consecutive lights + lateral element of ground pattern.
Visual Reference at DH when performing a CAT 3A:
3 Consecutive lights.
Visual Reference at DH when performing a CAT 3B:
1 Centerline light.
Visual Reference at DH when performing a CAT 3B with no DH:
Not required!
If we lose either L or R auto throttle can we carry out a CAT 3B approach?
Yes, by manually matching the associated thrust lever.
At what altitude approximately FLARE replaces G/S on FMA?
50 feet RA.
At what altitude approximately IDLE replaces SPD on FMA?
25 feet RA.
