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modes: VNAV SPD, FLCH SPD, or TO/GA. Minimum and maximum speeds are
normally supplied by the FMC. If FMC data is invalid, internal FCC speed limits
are calculated. FCC minimum speed is a function of flap setting. FCC maximum
speed is the air data computer VMO/MMO for flaps up and flap placard speeds.
With an engine failure during cruise, the AFDS maintains level flight. If above
maximum engine-out altitude, delaying descent results in a gradual airspeed loss.
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
4.20.18 D6-30151-425
Automatic Flight -
System Description
Intentionally
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April 01, 2001
747 Operations Manual
Automatic Flight Chapter 4
EICAS Messages Section 30
Copyright © The Boeing Company. See title page for details.
D6-30151-425 4.30.1
Automatic Flight EICAS Messages
The following EICAS messages can be displayed.
Message Level Aural Condition
>AUTOPILOT Caution Beeper Autopilot is operating in a degraded
mode. Engaged roll and/or pitch mode
may have failed.
>AUTOPILOT DISC Warning Siren Autopilot has disengaged.
>AUTOTHROT DISC Caution Beeper Autothrottle has disconnected. Message
and aural are inhibited when disconnect
occurs due to selection of reverse thrust.
>NO AUTOLAND Caution
Advisory
Beeper Autoland is not available.
Message is a caution if fault occurs after
LAND 3 or LAND 2 annunciates.
Message is an advisory if fault occurs
before LAND 3 or LAND 2 annunciates.
>NO LAND 3 Caution
Advisory
Beeper Autoland system does not have
redundancy for triple channel autoland.
Message is a caution if fault occurs after
LAND 3 or LAND 2 annunciates.
Message is an advisory if fault occurs
before LAND 3 or LAND 2 annunciates.
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
4.30.2 D6-30151-425
Automatic Flight -
EICAS Messages
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April 1, 2000
747 Operations Manual
Communications Chapter 5
Table of Contents Section 0
Copyright © The Boeing Company. See title page for details.
D6-30151-425 5.TOC.0.1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.1
Audio Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.1
Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.3
Radio Tuning Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.3
Miscellaneous Communication Controls . . . . . . . . . . . . . . . . . . . 5.10.5
Flight Deck Speaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.5
Headphone/Boom Microphone . . . . . . . . . . . . . . . . . . . . . . . . 5.10.6
Hand Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.7
Oxygen Mask Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.7
Control Wheel Microphone/Interphone Switch. . . . . . . . . . . . 5.10.8
Service Interphone Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.9
Observer Audio SystemSwitch. . . . . . . . . . . . . . . . . . . . . . . . 5.10.9
Handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.10
Interphone Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.11
Cockpit Voice Recorder System . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.13
Cockpit Voice Recorder Panel . . . . . . . . . . . . . . . . . . . . . . . . 5.10.13
Cockpit Voice RecorderMicrophone. . . . . . . . . . . . . . . . . . . 5.10.13
Printer Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10.14
SystemDescription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.1
Audio Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.1
Cockpit Voice Recorder System . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.1
Radio Tuning Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.2
Radio Communication System . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.2
VHF and HF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.2
Aircraft Communication Addressing and Reporting
System(ACARS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.20.3
Satellite Communications (SATCOM) . . . . . . . . . . . . . . . . . . 5.20.3
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航空翻译 www.aviation.cn
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