PRIMARY DISPLAY SYSTEM -MISCELLANEOUS CONTROLS -2
EFFECTIVITY BEJ ALL 31-61-00
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D633W101-BEJ Jan 05/2002
PRIMARY DISPLAY SYSTEM -PRIMARY FLIGHT DISPLAY OVERVIEW
Purpose
The primary flight display (PFD) gives the crew this information:
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Attitude
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Critical parameters cross comparison
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Airspeed
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Altitude
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Marker beacon
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Vertical speed
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Heading
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Localizer and glide slope deviation
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Autopilot and autothrottle mode annunciations
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Autopilot status annunciations
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Radio altitude and decision height
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Time critical warning (TCW) messages.
Attitude
The attitude area supplies the flight crew with pitch and roll information from the air data inertial reference system (ADIRS). This data shows as sky/ground shading, a horizon line and a fixed airplane symbol. Additional information in this area includes this:
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Integrated flight director cue
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Flight path vector (FPV)
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Flight path angle (FPA)
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TCAS commands
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Slip/skid information
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Pitch limit indications.
Critical Parameter Cross Comparison
Each PFD graphic generator compares this data with the data for the other PFD:
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Track
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Heading
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Pitch attitude
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Roll attitude.
When the difference between pitch or roll attitude exceeds three degrees, heading exceeds four degrees, or track exceeds six degrees, the system makes an EICAS ATTITUDE message.
Airspeed
The airspeed indication is to the left of the attitude area. Digital readouts show computed air speed (CAS) and MACH values. Reference speeds, maximum and minimum limit speeds, and speed trend data also show.
Altitude
The barometric altitude indication shows as a digital readout and a moving tape to the right of the attitude area.
Marker Beacon
The marker beacon indication shows in the upper right area of the attitude display. Inner marker (IM) white, middle marker (MM) amber, or outer marker (OM) blue, show as the airplane flies over a marker beacon.
EFFECTIVITY BEJ ALL 31-61-00
Page 72
D633W101-BEJ Sep 05/2002
PRIMARY DISPLAY SYSTEM -PRIMARY FLIGHT DISPLAY OVERVIEW
Vertical Speed
The vertical speed indication shows on a fixed scale with a pointer. It is to the right of the barometric altitude indication.
Heading
Heading and track data show on a partial compass rose at the bottom of the PFD.
ILS Data
ILS data shows when the ILS receiver tunes to a valid frequency. This data includes:
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localizer and glide slope deviation
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ILS frequency
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ILS identifier
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DME distance and
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Selected runway course.
The identifier and selected runway course show at the upper left corner of the attitude area. Co-located DME distance shows just below the identifier.
Flight Mode Annunciations
Autopilot and autothrottle flight mode annunciations show at the top of the PFD. The top lines show autothrottle, AFDS roll, and AFDS pitch active modes in large green letters. The lower line shows AFDS roll and pitch armed modes in the center and right areas in small white letters.
EFFECTIVITY
BEJ ALL
AFDS Status
The AFDS status shows at the top center of the attitude area. These annunciations show for a flight director (F/D) only or an autopilot and F/D engaged:
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FLT DIR -F/D only
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A/P -autopilot only or autopilot and F/D.
These are the autoland status annunciations:
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NO AUTOLAND
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>LAND 2<
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本文链接地址：777 AMM 飞机维护手册 指示和记录系统 2(22)
