Surveillance Systems

Question 1

What occurs when the GPWS TERR pb is selected OFF?

Answer 1

▪ TERR pb selected OFF :

• Inhibits only the terrain warning feature of the GPWS system.

Question 2

What occurs when the GPWS SYS pb is selected OFF?

Answer 2

▪ SYS pb selected OFF:

• Inhibits each of the basic categories of the GPWS system. The terrain warning feature remains fully operational.

Question 3

What is the function of the G/S MODE pb on the GPWS panel?

Answer 3

▪ G/S MODE:
• Inhibits the excessive deviation below glideslope warning “GLIDESLOPE”
• Used for approaches with glideslope out of service or LDA/LOC approaches.

Question 4

What is the function of the FLAP MODE pb on the GPWS panel?

Answer 4

▪ FLAP MODE:
• Inhibits the unsafe terrain clearance warnings “TOO LOW FLAPS”.
• Used in conjunction with a flap malfunction.

Question 5

What is the function of the LDG FLAP 3 pb on the GPWS panel?

Answer 5

▪ LDG FLAP 3:
• Configures the GPWS to expect FLAPS 3 as the final flap setting for landing.
• Inhibits the “TOO LOW FLAPS” aural warning.
• Landing memo displays Flap 3 instead of Conf Full.

Question 6

What are the indications associated with a Terrain Caution?

Answer 6

❇️Terrain Caution
▪ Both GPWS lights (amber) illuminate on the forward instrument panel. ▪ Aural “TERRAIN AHEAD!” warning sounds.
▪ Terrain displays automatically appear on both NDs.
▪ Amber TERRAIN AHEAD message appears on the NDs.

Question 7

What are the indications associated with a Terrain Warning?

Answer 7

❇️Terrain Warning
▪ Both PULL UP lights (red) illuminate on the forward instrument panel. ▪ Aural “TERRAIN AHEAD, PULL UP!” warning sounds.
▪ Terrain displays automatically appear on both NDs.
▪ TERRAIN AHEAD message appears on the NDs.

Question 8

What would be the responsive actions to TCAS Preventative Advisory?

Answer 8

▪ Preventative Advisory – Keep the aircraft’s vertical speed out of the red area of the PFD’s vertical speed indicator.

Question 9

What would be the responsive actions to TCAS Corrective Advisory?

Answer 9

▪ Corrective Advisory – Keep the aircraft’s vertical speed within the green-shaded area of the PFD’s vertical speed indicator.

Question 10

Which ND mode cannot display GPWS, TCAS, or Weather Radar returns?

Answer 10

▪ PLAN mode.