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constraint to “at” (hard constraint). This enables a shallower path before the FAF,
permitting a normal deceleration for flap and gear extension. Example: In the
diagram above, if both the FACF and the FAF contain “xxx/4000A” waypoint
constraints, the crew should change “4000A” to “4000” at the FACF to modify the
path for a more normal deceleration.
Coded vertical
angle
(RWxx)
Threshold
FACF FAF MAP crossing height
Coded vertical
angle
(MXxx)
Threshold
FACF FAF MAP crossing height
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
5.38 FCT 777/787 Preliminary (TM)
Crews can expect to see several other variations of approach path construction:
• approaches where the FAF has an “at or above” waypoint altitude
constraint. The GP angle normally terminates at the FACF altitude
constraint or the cruise altitude, whichever is lower. When this type of
path is flown, the airplane passes above the FAF
• where there is more than one GP angle, such as for ILS approaches, the
airplane uses the GP angle for the active leg to define the VNAV approach
path. These types of paths are shown on the LEGS page as having two GP
angle values, one approaching the FAF, the second approaching the
runway (missed approach point).
Note: The coded GP angle is steeper than normal in temperatures warmer than
ISA standard and is shallower than normal in temperatures colder than ISA
standard.
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) 5.39
Instrument Approach Using VNAV
777-200 - 777-300ER
At DA(H) or MDA(H)
• Intercept landing profile
and disengage autopilot
Approaching intercept heading
• Flaps 5
• Flaps 5
On RADAR vectors
• HDG SEL
• Pitch mode (as needed)
Intercept heading
• Arm LNAV or select
other roll mode
• Flaps 1
FAF
Inbound (Approximately 2 NM)
• Gear down
• Flaps 20 (optional landing flaps 1 engine)
• Arm speedbrake
• Set DA(H) or MDA(H)
• Select VNAV
• Speed intervention
Enroute to fix
• LNAV or other roll mode
• VNAV or other pitch mode
Descend to DA(H) or MDA(H)
• Landing flaps (2 engine,
optional 1 engine)
• Monitor VNAV path
• Do the Landing checklist
300 feet below missed approach altitude
• Set missed approach altitude
October 31, 2006
777/787 Flight Crew Training Manual
Approach and Missed Approach
Copyright © The Boeing Company. See title page for details.
5.40 FCT 777/787 Preliminary (TM)
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.
FCT 777/787 Preliminary (TM) 5.41
Approach Preparations for using VNAV
Select the approach procedure from the ARRIVALS page of the FMC. Tune and
identify appropriate navaids. Do not manually build the approach or add
waypoints to the procedure. If additional waypoint references are desired, use the
FIX page. To enable proper LNAV waypoint sequencing, select a straight-in
intercept course to the FAF when being radar vectored to final approach.
Verify/enter the appropriate RNP and set the DA(H) or MDA(H) using the baro
minimums selector. If required to use MDA(H) for the approach minimum
altitude, the barometric minimums selector should be set at MDA + 50 feet to
ensure that if a missed approach is initiated, descent below the MDA(H) does not
occur during the missed approach.
Note: The approach RNP is not displayed until the first waypoint of the approach
is sequenced unless the pilot manually enters an RNP or the navigation
data base specifies the RNP value.
Transition to an Instrument Approach using VNAV
There are several techniques which help ensure a smooth descent transition to a
non-ILS final approach where VNAV PTH will be used.
Note: The FAF is normally the waypoint shown on the LEGS page and map
display just before the final approach segment. The following discussions
assume the FAF altitude constraint is set in the MCP while descending
toward the FAF.
If descending to FAF altitude in FLCH, V/S or FPA, or if in ALT at the FAF
altitude, set DA(H)/MDA(H) in the MCP, engage VNAV and speed intervention
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787机组训练手册Flight Crew Training Manual 787(81)
