GPWS

Question 1

TAWS requirement

Answer 1

~turbine a/c mass > 5700kg or pax >9 need to be equiped with class ATAWS
~piston a/c mass >5700 kh or pax >9 with TAWS calss B

Question 2

Gpws
Egpws
Taws

Answer 2

Egpws/taws : look forward as well

Gpws : look only for below

Question 3

Modes

Answer 3

1)excessive descent rate
2)excessive terrain closure rate
3)altitude loss after take off or go around
4)unsafe terrain clearance while not on landing configuration
5)descent below glideslope
6)advisory callouts
70windsahre warning

Question 4

Mode 1

Answer 4

Height above ground use :
~radio altimeter
~adc (altitude)

Question 5

Mode 2

Answer 5

Rate of closure measured by how rapidly radio altitude decreses

~mode 2A : -flaps not in the la ding config
-active during climb ,cruise and initial approach
~mode 2b. - flaps in the landing config
-gear up

Question 6

Mode 3

Answer 6

Activated by barometric altitude loss
~gear up
~flaps not in landing config

13ft 1700ft gear up

Question 7

Limits

Answer 7

<2500ft
>50ft

Question 8

Mode 4

Answer 8

4a: -active in cruise or on approach wiht gear up
-protects against cfit and gear up landing

If is less than 190 kt ,it will say to low gear.

4bgear is down and
Flaps not in landing config

Question 9

Mode 5

Answer 9

When glideslpe

Question 10

Mode 6

Answer 10

Advisory
~minimums
~bank anlge

Question 11

Mode 6

Answer 11

Bank angle reduces to to 10 degrees whe nclose to the ground

Minimums

Question 12

Mode 7

Answer 12

~Changes in airspeed
~changes in ground speed
Rate of change of altitude
~rate of change of aoa

Question 13

Taws advanced modes

Answer 13

Based on the terrain databse and accurate a/c posiotn

~terrain awereness and display (TAD)
~terrain clarance floor (TCF)

Question 14

Terrain awereness and display (TAD)

Answer 14

~remote area have 5nm resolution
~0,25nm resolution near airports

Question 15

Terrain coding

Answer 15

~from below 500ft to 2000ft belkow me&raquo_space;>greeen
~from 500ft below me and to 2000ft above me&raquo_space;yellow
~above 2000ft above me&raquo_space;>red

Question 16

Terrain clearance floor (TCF)

Answer 16

~creates a stepped terrain floor extending from the centre of the nearest runways in the database

700agl ,from 15nm
400agl, from 5nm to 12nm

Question 17

RAAS and ROW /ROP

Runway awareness and advisory system
Runway overrun warning and protection

Answer 17

RAAS»~aural call out when taxing onto a runway

~ROW/ROP» warns of runway overrun