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Training Information Point
If an engine fails when the airplane is on the ground and the airplane CAS is more than 65 knots but less than 3 knots below V1 (decision speed), the primary display function of AIMS shows the time critical warning message ENGINE FAIL on the PFDs. Also, the master warning lights come on. The AIMS cabinets also send a digital request signal to the ground proximity warning computer (GPWC). The GPWC makes an engine fail aural.
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777 AIRCRAFT MAINTENANCE MANUAL

WES -ENGINE FAIL WARNING

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WES -GPWS PULL UP AND WINDSHEAR WARNINGS

General
The ground proximity warning computer (GPWC) supplies pull up and windshear digital discrete signals to the AIMS. The AIMS cabinets supply these signals to the WEUs.
Before a WEU channel makes a pull up or a windshear warning, at least one other WEU channel must make the same warning.
The master warning light logic makes the master warning lights (MWLs) come on. Push any master warning light to make the master warning lights go out.
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777 AIRCRAFT MAINTENANCE MANUAL

WES -GPWS PULL UP AND WINDSHEAR WARNINGS

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WES -TAKEOFF CONFIGURATION WARNING ENABLE

General
The WES makes a takeoff configuration warning when the airplane configuration is not safe for takeoff.
Each WEU has takeoff configuration warning enable logic. The takeoff configuration warning enable permits the WEUs to make takeoff configuration warnings only when it is possible to takeoff.
The WEUs use this data to make the takeoff configuration warning enable:
*
Air data inertial reference unit (ADIRU) data

*
Secondary attitude air data reference unit (SAARU) data

*
Primary Flight Computer (PFC) data.

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WES -TAKEOFF CONFIGURATION WARNING ENABLE

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