34 Surveillance

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

5 (active up to 2500ft RA)

1: Excessive rate of descent
“SINK RATE, SINK RATE”
“PULL UP” (Warning)

2: Excessive terrain closure rate
“TERRAIN, TERRAIN”
“PULL UP” (Warning)

3: Altitude loss after takeoff or go-around
“DON’T SINK, DON’T SINK”

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

5: Excessive descent below the glideslope
“GLIDESLOPE”

FCOM 34-SURV-40-20