GPWS panel

Question 1

What does pressing the SYS pushbutton do?

Answer 1

All basic GPWS alerts (mode 1 to 5) are inhibited

Question 2

What does an amber FAULT light in the SYS pushbutton indicate on the GPWS panel?

Answer 2

Any failure of the GPWS mode 1 through 5

Question 3

What effect, if any, does an amber FAULT light in the SYS pushbutton have on the TERRAIN mode?

Answer 3

no effect at all

Question 4

Describe a situation when a pilot might press LDG FLAP 3

Answer 4

-to avoid nuisance warning in case of landing in CONF 3
-in this case, LDG MEMO displays FLAPS…..3 instead of CONF FULL

Question 5

Describe a situation when a pilot might press the FLAP MODE pushbutton

Answer 5

-to avoid nuisance warning in case of landing with flaps setting reduced
-FLAP SYS 1(2) FAULT would require selection of FLAP MODE off

Question 6

What effect, if any, does the failure of TERR mode have on basic GPWS?

Answer 6

no effect whatsoever

Question 7

What are the modes of the SYS? (5)

Answer 7

1. Rate of Descent
2. Altitude loss after takoff/go-around
3. Too far below glideslope
4. Terrain Closure Rate
5. Unsafe terrain clearance when not in landing configuration

Question 8

When does the GPWS activate?

Answer 8

From 30 ft to 2450 ft