Crew Alerting System

Question 1

What are the visual indications of GPWS (EGPWS) warnings?

Answer 1

• activates the illumination of both GPWS PULL UP/TEST annunciator switchlights
• if aircraft descends below glideslope, activates the illumination of the BELOW G/S switchlights.

Question 2

What does the warning tone generator provide us with?

Answer 2

Two warning tone generators compute and provide the warning tones which alert the flight crew to specific abnormalities or system failures.

The WTG’s receive parameters from various aircraft equipment and generate and prioritize the associated tones.

The tones are heard through the cockpit speakers and the pilot headsets.

Question 3

What are the indications of a warning tone generator failure?

Answer 3

“WTG 1 FAIL OR WTG 2 FAIL” message is displayed on the ED advisory message location.

Question 4

Can warning tones be heard through the speakers and headsets?

Answer 4

Yes