ATA 30 - Ice And Rain Protection

Question 1

When to use engine anti ice ?

Answer 1

OAT (ground) or TAT (inflight) =< 10°C + visible moisture/contaminated surfaces
except during climb or cruise if SAT =< -40°C ( not descent)

Question 2

If engine anti ice is ON, continuous ignition is automatically ON. True or False ?

Answer 2

True ( only on some MSN )

Question 3

How is engine anti iced ?

Answer 3

Air from HP compressor into leading edge of the nacelle

Question 4

What is the position of engine anti ice valve when in emergency electrical configuration ?

Answer 4

OPEN

Question 5

Which slats are anti iced ?

Answer 5

Slats 5, 4, 3
___ ___ ___ ___ ___|
5 4 3 2 1

Question 6

When wing anti ice is used ?

Answer 6

Ice on ice indicator or/and on wipers

Question 7

Can wing anti ice be used on ground ?

Answer 7

No. If you put it ON —> 30s self test only

Question 8

Position of the wing anti ice valve if emergency electrical configuration ?

Answer 8

CLOSED if on BAT only.
If EMER GEN running —> available !

Question 9

Position of the wing anti ice valve in case of leak detected ?

Answer 9

CLOSED

Question 10

How many Window Heat Computer ?

Answer 10

2 WHC, 1 each side

Question 11

When windows/windscreen is heated ?

Answer 11

AUTO: inflight or on ground 1 engine running
ON: …

Windows: 1 level of heat
Windscreen: Low on ground, High in flight

Question 12

How many Probe Heat Computer ?

Answer 12

3 PHC (1CdB, 1 Sby, 1FO)

Question 13

When probes are heated ?

Answer 13

AUTO: inflight or on ground 1 engine running
ON: …

AoA & SAT: 1 level
Pitot: Low on ground, high inflight
TAT: inflight only

Question 14

On ground, when is the rain repellent system inhibited?

Answer 14

Both engine off

Question 15

The ENGINE ANTI-ICE VALVE closes in case of low AIR PRESSURE. True or False ?

Answer 15

True. E.g. in case of engine shutdown.

Question 16

In case of window heat computer failure, the other computer can replace the failed one ?

Answer 16

No. One computer per side

Question 17

What is the consequence on N1 idle and max limit of the ENG or WING A/I ?

Answer 17

N1 idle is increased and max limit is decreased

Question 18

Can you land with WINGS A/I ON ?

Answer 18

No except if severe icing conditions (cf SOP when extending flaps Full)

Question 19

After how many seconds ECAM msg ICE NOT DETECTED is displayed ?

Answer 19

190s

Question 20

Which probe between AoA, TAT, SAT and pitot is not heated on ground ?

Answer 20

TAT

Question 21

What are the impact on climb gradient in case of an open WING A/I valve ? (MEL)

Answer 21

5000kg in case of «hot T°» (ISA+5)

Question 22

ENG A/I may be operative even if ENG BLEED off. True or False ?

Answer 22

True (cf Bleed system diagram)