Predictive windshear symbol (R, B, A) MAP, MAP CTR, VOR, APP Displays windshear location and approximate geometric size (width and depth). Amber radials extend from predictive windshear symbol to help identify location of windshear event.
WINDSHEAR Windshear annunciation (R, A) All Predictive windshear caution active (A). Predictive windshear warning active (R).
PWS FAIL Predictive windshear status annunciation (A) All Predictive windshear alerting and display have failed.
Copyright . The Boeing Company. See title page for details.
10.41.20 March 28, 2005
Flight Instruments, Displays -PFD/ND Navigation Displays
TCAS
SYMBOL NAME MODE REMARKS
-03 TCAS resolution advisory (RA), relative altitude (R) MAP, MAP CTR, VOR, APP These symbols are displayed only when the EFIS control panel traffic (TFC) switch is selected on. Refer to Chapter 15, Warning Systems. The arrow indicates traffic climbing or descending at a rate >= 500 fpm. At rates < 500 fpm, the arrow is not displayed. For relative altitude symbols, the number and associated signs indicate altitude of traffic in hundreds of feet relative to the airplane. For absolute altitude symbols, the number indicates altitude of traffic in thousands and hundreds of feet. For both relative and absolute altitude, the number is below the traffic symbol when the traffic is below, and above the traffic symbol when the traffic is above the airplane. Absence of the number implies altitude unknown.
+02 TCAS traffic advisory (TA), relative altitude (A)
-05 TCAS proximate traffic, relative altitude (W)
+09 TCAS other traffic, relative altitude (W)
128 TCAS TA, absolute altitude (A)
TCAS no bearing MAP, Message provides traffic type,
RA 5.3 +03 message (RA–R, MAP CTR, range in NM, altitude and vertical
TA 8.9 -12 TA–A) VOR, APP direction. TFC must be selected on.
TRAFFIC TCAS traffic alert message (RA–R, TA–A) All Displayed whenever a TCAS RA or TA is active. EFIS control panel TFC switch does not have to be selected on.
Copyright . The Boeing Company. See title page for details.
September 29, 2005 10.41.21
Flight Instruments, Displays -PFD/ND Navigation Displays 737 Flight Crew Operations Manual
SYMBOL NAME MODE REMARKS
OFFSCALE TCAS off scale message (RA–R, TA–A) MAP, MAP CTR, VOR, APP Displayed whenever RA or TA traffic is outside the traffic area covered by the ND range. Displayed only if the EFIS control panel TFC switch is selected on.
TFC TCAS mode (C) MAP, MAP CTR, VOR, APP Indicates the ND TCAS display is active; the EFIS control panel TFC switch is selected on.
TA ONLY TCAS mode (C) All Indicates TCAS computer is not computing RAs. Displayed whether the EFIS control panel TFC switch is selected on or off.
TCAS TEST TCAS mode (C) All Indicates TCAS is operating in the test mode. Displayed whether EFIS control panel TFC switch is selected on or off.
TCAS OFF TCAS mode (A) All Displayed when the TCAS/ATC mode switch is not in TA ONLY or TA/RA, if traffic is selected. Not displayed if TCAS is failed.
TCAS FAIL TCAS mode (A) All Indicates TCAS failure, if traffic is selected.
YA613 - YA809, YC411 - YK104
Range Ring (W) MAP, MAP CTR, Displayed when TFC selected on EFIS Control Panel. Shows 3 NM
VOR, APP range ring oriented to aircraft heading. Displayed at ranges of 80 NM or less.
Copyright . The Boeing Company. See title page for details.
10.41.22 June 1, 2005
737 Flight Crew Operations Manual
This Section Applies to YC153, YC154
Introduction
HUD symbology consists of green symbols projected on the combiner from the OHU. The NP mode display symbols are similar to those on the CDS, and can be used for all phases of flight. The approach mode displays (AI, AII, AIII) are optimized to enhance aircraft control and situational awareness during final approach, flare, and touchdown.
In addition to flight symbology, TCAS resolution advisories and HUD system failure flags are displayed when active.
Head-Up Guidance Display Symbology
The following symbols can be displayed on the combiner, depending on CDU and EFIS control panel switch selections.
SYMBOL NAME MODE REMARKS
Airplane reference All Top center point of the symbol represents airplane projected centerline. 中國航空網(wǎng) www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：737NG機組操作手冊Flight Crew Operations Manual FCOM 3(48)
