787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Preflight
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 11.40.31
ILS-GLS
The tuning status displays adjacent to the ILS frequency/course or GLS channel.
The ILS and GLS receivers operate in FMC autotune or manual tuning modes.
The FMC autotunes the ILS frequency/course or the GLS channel depending upon
the approach selected in the flight plan. When the ILS or GLS is not necessary, the
FMC sets the ILS-GLS status to PARK. This removes the displays from the PFD.
Airplane position on the route determines the ILS-GLS operating mode. The
operating mode displays are:
• PARK – the ILS or GLS is not being used and is not tuned
• XXX.XX/YYY PARK – the ILS is tuned for the selected approach but is
not being used
• “A” indicates autotuning under FMC control for approach guidance
• “M” indicates the ILS or GLS is manually tuned
ILS autotuning is inhibited for ten minutes after takeoff and during
manual–tuning. Autotuning and manual–tuning are inhibited when:
• the autopilot is engaged and either the localizer or glideslope is captured
• only the flight director is ON and either the localizer or glideslope is
captured and the airplane is below 500 feet radio altitude
• on the ground with the localizer alive, the airplane heading within 45º of
the localizer front course and the groundspeed is greater than 40 knots
Subsequent manual–tuning is enabled when:
• either TOGA switch is pushed
• the autopilot is disengaged and both flight directors are switched off
• the MCP approach switch is deselected when the airplane is above 1500
feet radio altitude
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ILS-GLS Tuning
TCELESERP
SLGSLI
821/9.011
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OIDARVAN
KRAP
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August 14, 2009
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