737 Flight Crew Operations Manual
Flight Management, Navigation -
Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
11.10.14 D6-27370-866-EGP
1 Global Positioning System (GPS) Light
Illuminated (amber) –
• indicates failure of both GPS sensor units
• indicates failure of a single GPS sensor unit when either system
annunciator panel is pushed to initiate a recall
• with single GPS sensor failure, light extinguishes when the system
recall is reset.
Inertial System
IRS Display Unit (ISDU)
1 Display Selector (DSPL SEL)
TEST (spring–loaded to TK/GS) –
• all lights in data displays and on the mode selector unit momentarily
illuminate, followed by a 10 second self–test
• use only during alignment.
TK/GS –
• left window displays true track (course)
• right window displays present ground speed (knots).
R
L
ENT CLR
2
N
5
H
S
8
0
3
E
6
97
4
W
1
SYS DSPL
BRT
TK/GS
TEST
HDG/STS
WIND
PPOS
DSPL SEL
IRS DISPLAY
AFT OVERHEAD PANEL
1
2
3
5
4
6
7
September 15, 2016
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