737 Operations Manual
Non-Normal Checklists -
Flight Management, Navigation
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE NNC.11.3
IRS DC FAIL
Condition: An IRS DC FAIL light illuminated indicates the related
IRS DC power has failed.
If all other IRS lights are extinguished, operate normally.
Note: With both IRS DC FAIL lights illuminated, the
switched hot battery bus is not powered or the
battery is nearly discharged.
December 06, 2002