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mode is changed. Complete the landing.
Minimum Descent Altitude/Height (MDA(H))
The pilot monitoring should expand the instrument scan to include outside visual
cues when approaching MDA(H). Do not continue the approach below MDA(H)
unless the airplane is in a position from which a normal approach to the runway
of intended landing can be made and suitable visual reference can be maintained.
Upon arrival at MDA(H) or any time thereafter, if any of the above requirements
are not met, immediately execute the missed approach procedure.
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
5.54 FCT 777/787 Preliminary (TM)
When suitable visual reference is established, maintain the descent path to the
flare. Do not descend below the visual glide path.
Visual Descent Point
For a non-ILS approach, the VDP is defined as the position on final approach from
which a normal descent from the MDA(H) to the runway touchdown point may
be initiated when suitable visual reference is established. If the airplane arrives at
the VDP, a stabilized visual segment is much easier to achieve since little or no
flight path adjustment is required to continue to a normal touchdown.
VDPs are indicated on some non-ILS approach charts by a "V" symbol. The
distance to the runway is shown below the “V” symbol. If no VDP is given, the
crew can determine the point where to begin the visual descent by determining the
height above the airport (HAA) of the MDA(H) and use 300 feet per NM distance
to the runway.
In the following example, an MDA(H) of 550 feet MSL with a 100 feet
touchdown zone elevation results in a HAA of 450 feet. At 300 feet per NM, the
point to begin the visual descent is 1 ½ NM distance from the runway.
Most VDPs are between 1 and 2 NM from the runway. The following table
provides more examples.
Note: If flying a VNAV path approach and the airplane remains on the published
path, then the VDP is automatically complied with when the airplane
arrives at the DA(H) or MDA(H). It is not necessary to determine the point
to begin the visual descent for VNAV path approaches for this reason.
HAA (feet) 300 400 450 500 600 700
VDP Distance, NM 1.0 1.3 1.5 1.7 2.0 2.3
FAF
MDA(H)
550 ft
Touchdown zone
elevation (100 ft)
VDP (1.5 NM)
HAA (450 ft)
VDP
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 5.55
When flying an instrument approach using V/S or FPA, if the pilot adjusts the
altitude range arc to approximately the VDP distance in front of the runway by
varying the vertical speed or flight path angle, the airplane will remain close to or
on the proper path for typical non-ILS approaches.
Missed Approach - Non-ILS
Refer to Go-Around and Missed Approach - All Approaches, this chapter.
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
5.56 FCT 777/787 Preliminary (TM)
Circling Approach
777-200 - 777-300ER
Before turning base or
initiating the turn to base
• Landing flaps
(if not previously selected)
• Do the Landing checklist
Configuration at MDA(H)
• Gear down
• Flaps 20
(landing flaps optional)
• Arm speedbrake
Intercepting landing profile
• Disconnect autopilot
Minimum descent altitude
• Select ALT HOLD
(as needed)
• Set missed approach altitude
• Select HDG SEL or TRK SEL
If a missed approach is needed at
any time while circling, make an
initial climbing turn toward the
landing runway and intercept the
missed approach course.
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 5.57
787-8
TBD
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
5.58 FCT 777/787 Preliminary (TM)
Circling Approach - General
The circling approach should be flown with landing gear down, flaps 20, and at
flaps 20 maneuvering speed. Use the weather minima associated with the
anticipated circling speed. As an option the approach may be flown with flaps 25
or 30. Maintain MDA(H) using ALT HOLD or VNAV ALT mode and use HDG
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787机组训练手册Flight Crew Training Manual 787(87)
