737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
Controls and Indicators
MN-FLT-OH-201
11.10.11
Landing System Lights
1B785, 1B786, 1J585 - 1J594
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.
2
Instrument Landing System (ILS) Light
Illuminated (amber) –
• indicates failure of both ILS sensor units
• indicates failure of a single ILS sensor unit when either system
annunciator panel is pushed to initiate a recall
• with single ILS sensor failure, light extinguishes when the system recall
is reset.
IRS
L
R
ALIGN
DC FAIL
FAULT
ALIGN
FAULT
OFF
NAV
ALIGN
DC FAIL
ATT
OFF
NAV
ALIGN
ATT
ON DC
ON DC
GPS
ILS
GLS
1
AFT OVERHEAD PANEL
2
3
March 1, 2021