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Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
YD651 - YD655
YC153, YC154
Copyright . The Boeing Company. See title page for details.
10.11.18 March 28, 2005
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
Bank Scale (white)
Provides fixed reference for the bank pointer; scale marks are at 0, 10, 20, 30, 45, and 60 degrees.
Pitch Limit Indication (amber)
Indicates pitch limit (stick shaker activation for existing flight conditions).
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displayed when the flaps are not up.
YA613, YA809, YD651 - YK104
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displayed at slow speeds with the flaps up.
Flight Director Bar (magenta)
Indicates flight director steering commands. (Refer to Chapter 4, Automatic Flight.)
Horizon Line and Pitch Scale (white)
Indicates the horizon relative to the airplane symbol; pitch scale is in 2.5 degree increments.
YD651 - YD655
Horizon scale is in 5 degree increments.
Bank Pointer
Indicates bank angle; fills and turns amber if bank angle is 35 degrees or more.
Slip/Skid Indication
Displaces beneath the bank pointer to indicate slip or skid:
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fills white at full scale deflection
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turns amber if bank angle is 35 degrees or more; fills amber if the
slip/skid indication is also at full scale deflection.
Airplane Symbol
Indicates airplane attitude relative to the horizon.
Flight Path Vector (FPV) Indication (white)
Displays flight path angle and drift when selected on the EFIS control panel:
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flight path angle is displayed relative to the horizon line
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drift angle is displayed relative to display center.
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Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
PFD Navigation Performance Scales (NPS) Indications YK101 - YK104
Scale ID Annunciation (white)
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displayed when LNAV or VNAV are engaged.
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displayed above the left corner of ADI.
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indicates the source of displayed deviation for each scale.
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Possible annunciations include:
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LNAV/VNAV - (LNAV and VNAV deviations)
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LOC/VNAV - (Localizer with VNAV deviation)
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LNAV/G/S - (LNAV deviation with glideslope)
.
ILS - (ILS approach)
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10.11.20 March 28, 2005
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
NPS Deviation Scale
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lateral NPS deviation scale represents current FMC lateral RNP.
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vertical NPS deviation scale represents current FMC vertical RNP.
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displayed if an approach mode is not engaged and either LNAV or any VNAV mode is engaged.
Anticipation Cues
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displayed if valid approach course deviation information is being received while corresponding NPS deviation scale and pointer are displayed.
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an unfilled white diamond symbol.
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if engaged lateral mode subsequently transitions to LOC, lateral NPS deviation indications will be removed, and normal ILS localizer indications will be displayed.
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if engaged vertical mode subsequently transitions to G/S, vertical NPS deviation indications will be removed, and normal ILS G/S indications will be displayed.
NPS Pointer
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a filled magenta symbol when it is not parked at deflection limit.
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an unfilled pointer outline when at deflection limit.
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indicates lateral/vertical paths relative to the airplane.
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will flash for 10 seconds if deviation is within ANP bar limits for 10 continuous seconds.
Actual Navigation Performance (ANP) Bars
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lateral/vertical indication of available flight technical error remaining based on total system error.
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lateral ANP bars can be displayed in all phases of flight.
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vertical ANP bars can be displayed only after reaching top-of-descent.
. originate from outer scale and expand inward as a function of increasing ANP relative to RNP.
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will just touch at center of scale when ANP equals RNP.
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turn from white to amber if current deviation is within the ANP bar limits for 10 continuous seconds.
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Flight Instruments, Displays -PFD/ND – Displays
