34 Surveillance / EGPWS

Question 1

What does ROW and ROP stand for?

Answer 1

Runway Overrun Warning
Runway Overrun Protection

Question 2

When is ROW armed from and to?

Answer 2

Armed from 500ft AGL to the start of braking (starts detection from 2000ft)

Question 3

When is ROP working from/to?

Answer 3

From the start of braking until the aircraft stops

Question 4

Which aircraft have ROW/ROP features?

Answer 4

A320NEO and A321NEO

Question 5

What does ROW/ROP do?

Answer 5

Monitors the length of the runway against considerations of the aircraft such as weight, configuration, AP use, and also wind, runway state, and the 15% safety margin.

ROW warns if this LDA is insufficient on approach, ROP warns on ground

Question 6

If ROW gives the message IF WET: RUNWAY TOO SHORT in amber, can it be disregarded?

Answer 6

Yes, if the runway is dry. If wet or contaminated, go-around.

Question 7

How many modes of GPWS are there? What are they?

Answer 7

G
R
E
A
T

5 (active up to 2500ft RA)

G. GLIDESLOPE
Excessive descent below the glideslope
“GLIDESLOPE”

R. ROD
Excessive rate of descent
“SINK RATE, SINK RATE”
“PULL UP” (Warning)

E. Excessive terrain closure rate
“TERRAIN, TERRAIN”
“PULL UP” (Warning)

A. Altitude loss after takeoff or go-around
“DON’T SINK, DON’T SINK”

T: Terrain clearance not sufficient, if not in landing config
“TOO LOW TERRAIN”
“TOO LOW GEAR”
“TOO LOW FLAPS”

FCOM 34-SURV-40-20

Question 8

What would you expect to see visually if you had an EGPWS alert?

Answer 8

The GPWS amber light comes on in front of you.

Question 9

What colours do you expect to see on the terrain ND?

Answer 9

Green or low density yellow below you.

High density yellow(amber)greater than 1000ft above

High density red greater than 2000ft above