737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Cruise
11.42.6
MN-FLT-OH-201
Leg Bypass
1
Bypass Notification
A waypoint (BAN01) has been entered into the route which is very close to
another route waypoint (BANDR). It is impossible for the airplane to turn and
capture the leg between BANDR and BAN01, so a bypass is noted.
Turn construction is based upon FMC criteria which assumes that LNAV is
engaged. Normal turn construction may not be possible under certain
combinations of airspeed, short leg length, and a significant change in leg
direction. If normal turn construction cannot be provided to capture the leg into a
waypoint, the FMC bypasses the affected waypoint and uses alternative turn
construction to intercept that leg. When the bypass is for the active waypoint, the
waypoint remains active until the airplane passes abeam.
Any mandatory altitude–crossing restriction for the bypass waypoint is still
observed if VNAV is engaged, based on passing abeam the waypoint.
If a triple bypass condition occurs (bypass of three consecutive legs), a route
discontinuity will be inserted.
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1
March 1, 2021
