ATA 34 - Surveillance

Question 1

What are the 5 basic modes of GPWS ?

Answer 1

Mode 1: excessive descent rate
Mode 2: excessive terrain closure
Mode 3: altitude loss during TO or GA
Mode 4: unsafe terrain clearance when not in landing configuration
Mode 5: deviation from glide

Question 2

How many seconds to react to a first TCAS RA ? G load expected ?

Answer 2

5s
1.25g

Question 3

How many seconds to react to a corrective TCAS RA order ? Expected G load ?

Answer 3

2.5s
1,35g

Question 4

TCAS altitudes monitored in ALL mode ? ABV ? BLW ?

Answer 4

ALL: +/- 2700ft
ABV: +9900ft /-2700ft
BLW: + 2700ft / -9900ft

9900ft avec SEXTANT (std)
7000ft avec GARBLES (plus rare)

Question 5

TCAS is operative if transponder ALT RPTG is OFF. True or False ?

Answer 5

False. Works with altitude reporting.

Question 6

How many threats can be displayed by TCAS on ND ?

Answer 6

8 most dangerous

Question 7

What is the range where TCAS info can be displayed on ND ?

Answer 7

10/20/40 Nm

Question 8

Below which altitude PWS is operative ?

Answer 8

Predictive WS active below 2300ft RA

Question 9

When is PWS is inhibited ?

Answer 9

TO: 100kt to 50ft RA
LDG: 50ft RA

Question 10

What is the max range for turbulences detection by the weather radar (Wx + T mode )?

Answer 10

40Nm
CAT not detected

Question 11

What is the maximum range for PWS caution and warning detection ?

Answer 11

Take off before 100kt
Caution and Warning: 3Nm

Take off above 50ft and Landing
Caution = 3Nm max
Warning=1.5Nm max

Question 12

BUSS is usable until which FL ?

Answer 12

FL 250

Question 13

What do you do if RWY TOO SHORT is displayed on your PFD ?

Answer 13

Go Around

Question 14

What do you do if IF WET RWY TOO SHORT is displayed on your PFD ?

Answer 14

If rwy is wet: Go Around
Id rwy is dry: Continue

Question 15

Is TCAS operative if transponder is inoperative ?

Answer 15

No

Question 16

When you see an arrow next to a TCAS plot, what does it mean ?

Answer 16

VS > 500ft/min

Question 17

Below which altitude TCAS is inhibited ?

Answer 17

900ft RA

Question 18

How does an air data malfunction suspicion imply for TCAS ?

Answer 18

Alt reporting may be affected, TCAS may be erroneous. Advise ATC

Question 19

When you are established ILS, if a TCAS RA is triggered, LOC mode switches to HDG. True or False ?

Answer 19

False. LOC remains.

Question 20

What is the priority between GPWS, TCAS, stall and windshear ?

Answer 20

Stall > Windshear > GPWS > TCAS

Question 21

In case of radome destruction, how much N1 increment do you add to the one of the QRH?

Answer 21

+5%

Question 22

Do you follow stall warning if you use BUSS ?

Answer 22

Yes

Question 23

Can you use speedbrakes while using BUSS ?

Answer 23

No, it modifies relationship between speed and aoa

Question 24

Which CONF do you use if speed is unreliable ?

Answer 24

CONF 3

Question 25

What is the first thing to do after activating BUSS ?

Answer 25

Test speed and altitude responses with longitudinal stick input

Question 26

Which altitude source do you use when BUSS is activated ?

Answer 26

GPS altitude