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landings and maintain directional control after landing. Additionally, information
on factors affecting landing distance and landing geometry is provided.
Landing Configurations and Speeds
777-200 - 777-300ER
For normal landings, use flaps 25 or flaps 30. Aft body clearance is approximately
the same for either flap setting.
787-8
For normal landings, at weights below 325,000 lbs (147.4Kgs), flaps 25 is used
for noise abatement. At or above 325,000 lbs (147.4Kgs) flaps 25 or flaps 30 may
be used. Aft body clearance is approximately the same for either flap setting.
Maneuver Margin
Flight profiles should be flown at, or slightly above, the recommended
maneuvering speed for the existing flap configuration. These speeds approximate
maximum fuel economy and allow full maneuvering capability (25° bank with a
15° overshoot).
Full maneuver margin exists for all normal and non-normal landing procedures
whenever speed is at or above the maneuver speed for the current flap setting. Full
maneuver margin exists with flaps 20 at VREF 30 + 5 during a go-around at
go-around thrust.
Airspeeds recommended for non-normal flight profiles are intended to restore
near normal maneuvering margins and/or aerodynamic control response.
The configuration changes are based on maintaining full maneuvering and/or
maximum performance unless specified differently in individual procedures. It is
necessary to apply wind correction to the VREF speeds. See the Command Speed
section in chapter 1 for an explanation of wind corrections.
Non-Normal Landing Configurations and Speeds
The Non-Normal Configuration Landing Distance table in the PI chapter of the
QRH shows speeds and landing distances for various non-normal landing
configurations and runway conditions. The target speed for the approach is the
appropriate approach VREF plus the wind and gust additives.
October 31, 2006
777/787 Flight Crew Training Manual
Landing
Copyright © The Boeing Company. See title page for details.
6.2 FCT 777/787 Preliminary (TM)
Non-Normal Landing Distance
Because of higher approach speeds associated with the non-normal landing
condition the actual landing distance is increased. The flight crew should review
the Non-Normal Configuration Landing Distance information in the PI chapter of
the QRH.
October 31, 2006
777/787 Flight Crew Training Manual
Landing
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 6.3
Visual Approach Slope Indicator (VASI/T - VASI)
The VASI is a system of lights arranged to provide visual descent guidance
information during the approach. All VASI systems are visual projections of the
approach path normally aligned to intersect the runway at a point 1,000 or 1,800
feet beyond the threshold. Flying the VASI glide slope to touchdown is the same
as selecting a visual aim point on the runway adjacent to the VASI installation.
When using a two-bar VASI, the difference between the eye reference path and the
gear path results in a low approach with marginal threshold height. Therefore, the
two-bar VASI system should not be used to determine proper approach profile. It
may provide useful information in alerting the crew to low profile situations.
Some airports have three-bar VASI which provides two visual glide paths. The
additional light bar is located upwind from a standard two-bar installation. When
the airplane is on the glide path, the pilot sees the two white bars and one red bar.
Three-bar VASI may be safely used with respect to threshold height, but may
result in landing further down the runway.
For a T-VASI, flying the approach with one additional white fly down light visible
provides additional wheel clearance.
October 31, 2006
777/787 Flight Crew Training Manual
Landing
Copyright © The Boeing Company. See title page for details.
6.4 FCT 777/787 Preliminary (TM)
Three Bar VASI/T - VASI
Fly Down Lights
Fly Up Lights
Well Below
Glide Path
Slightly Low Low Very Low
Below
Glide Path
On
High
On Glide Path
Very High High Slightly High
High Cockpit Airplanes (3-bar)
Glide Path
Well Below
Glide Path
White VASI Lights
Indicator (VASI)
Visual Approach Slope Visual Approach Slope
Red VASI Lights
White T-VASI Lights
Red T-VASI Lights
Indicator (T-VASI)
October 31, 2006
777/787 Flight Crew Training Manual
Landing
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 6.5
VASI Landing Geometry
Two-bar VASI installations provide one visual glide path which is normally set at
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787机组训练手册Flight Crew Training Manual 787(94)
