737 Flight Crew Operations Manual
11.9
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D6-27370-4Q8-SJA
11.9
FAULT - IRSALIGN and FAULT - IRSFAULT and ALIGN - IRS
1 Choose one:
On the ground
2 Choose one:
▼
Continued on next page
▼
FAULT
IRS FAULT
Condition:
One or more of these occur:
•An IRS fault occurs
•On the ground, if the ALIGN light is also
illuminated, the present position entry is
possibly incorrect.
On the ground:
►►Go to step 2
In flight:
►►Go to step 6
ALIGN light is extinguished:
Do not takeoff.
■ ■ ■ ■
ALIGN light is also illuminated:
IRS mode selector
(failed side) . . . . . . . . . . . . . . . . . OFF
The FAULT light extinguishes
immediately and the ALIGN light
extinguishes after approximately 30
seconds.
►►Go to step 3
December 16, 2016
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