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and the amount of nose wheel tiller required for each turn. Except for turns less
than approximately 30°, speed should be 10 knots or less prior to turn entry. For
all turns, keep in mind the main gear are located behind the nose wheels, which
causes them to track inside the nose wheels during turns. The pilot position
forward of the nose wheels and main gear is depicted in the table below.
Main gear tracks
(near centerline)
Nose gear track
October 31, 2006
777/787 Flight Crew Training Manual
Ground Operations
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 2.9
777-200 - 777-300ER
787-8
Turns less than 90 degrees
Use a technique similar to other large airplanes: steer the nose wheels far enough
beyond the centerline of the turn to keep the main gear close to the centerline.
Turns of 90 degrees or more
777-200 - 777-300ER
Initiate the turn as the intersecting taxiway centerline (or intended exit point)
approaches the aft edge of the number 2 window. Initially use approximately full
nose wheel steering tiller displacement. Adjust the tiller input as the airplane turns
to keep the nose wheels outside of the taxiway centerline, near the outside radius
of the turn. Nearing turn completion, when the main gear are clear of the inside
radius, gradually release the tiller input as the airplane lines up with the
intersecting taxiway centerline or intended taxi path.
787-8
Initiate the turn as the intersecting taxiway centerline (or intended exit point)
approaches the aft edge of the number TBD window. Initially use approximately
full nose wheel steering tiller displacement. Adjust the tiller input as the airplane
turns to keep the nose wheels outside of the taxiway centerline, near the outside
radius of the turn. Nearing turn completion, when the main gear are clear of the
inside radius, gradually release the tiller input as the airplane lines up with the
intersecting taxiway centerline or intended taxi path.
Model Pilot Seat Position
(forward of nose gear)
feet (meters)
Pilot Seat Position
(forward of main gear)
feet (meters)
777 - 200 12 (3.7) 97 (29.6)
777 - 200LR 12 (3.7) 97 (29.6)
777 - 300 12 (3.7) 114 (34.8)
777 - 300ER 12 (3.7) 114 (34.8)
Model Pilot Seat Position
(forward of nose gear)
feet (meters)
Pilot Seat Position
(forward of main gear)
feet (meters)
787 - 800 TBD TBD
October 31, 2006
777/787 Flight Crew Training Manual
Ground Operations
Copyright © The Boeing Company. See title page for details.
2.10 FCT 777/787 Preliminary (TM)
Turns of 180 Degrees
If the available taxi surface is narrow, coordination with ATC and ground support
personnel may be required to complete the operation safely. Reference special
aerodrome operating instructions, if available. In some cases (e.g., heavy weight,
pilot uncertainty of runway and/or taxiway pavement edge locations and related
safety margins, nearby construction, vehicles, potential FOD damage, etc.),
towing the airplane to the desired location may be the safest option.
If a minimum radius 180° turn is necessary, consider using the ground crew to
monitor the wheel path and provide relevant information as the turn progresses.
The ground crew should be warned of the risk associated with jet blast and
position themselves to avoid the hazard. Also ensure that obstacle clearance
requirements are met. Since more than idle thrust is required, the flight crew must
be aware of buildings or other objects in the area being swept by jet blast during
the turn.
Note: Monitor the nose gear track closely, as it will leave the pavement in the turn
before the main gear.
777-200 - 777-300ER
Approach the edge of the taxi surface at a shallow angle until the outboard side of
the main gear wheels are near the edge. The lower outboard corner of the pilot’s
number 1 window is a good visual reference for the outboard side of the main gear
wheels on the same side. The lower inboard corner of the pilot’s number 1 window
is also a good reference for the opposite side main gear wheels.
787-8
Approach the edge of the taxi surface at a shallow angle until the outboard side of
the main gear wheels are near the edge. The lower outboard corner of the pilot’s
number TBD window is a good visual reference for the outboard side of the main
gear wheels on the same side. The lower inboard corner of the pilot’s number TBD
window is also a good reference for the opposite side main gear wheels.
Note: Painted runway markings are slippery when wet and may cause skidding
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787机组训练手册Flight Crew Training Manual 787(28)
