Ice & Rain

Question 1

399. What are the two types of protection?

Answer 1

Electric and pneumatic.

Question 2

400. Where is ice buildup prevented?

Answer 2

Wing leading edges
Engine cowl inlets
Windshields
Probe sensors
Aft drain mast

Question 3

401. Describe ice detection system.

Answer 3

It’s comprised of two independent systems consisting of two ice detectors: one mounted below pilot window and one below copilot window.

Question 4

402. When does cyan Ice Detected CAS message extinguish?

Answer 4

Ice accumulation < 0.02” for three (3) minutes.

Question 5

403. With switches in auto, when does cowl and wing heat cease?

Answer 5

Cowls heat for three (3) minutes and wings heat for five (5) minutes after ice detected message extinguishes.

Question 6

404. Describe WAI system?

Answer 6

It consists of two independent control systems, pneumatically linked via crossover duct. One system provides WAI for left wing and one provides WAI for right wing.

Question 7

405. Where is WAI exhausted overboard?

Answer 7

Hot air flows through leading edge of each wing, passes through main wheel well, and through two screens aft of wheel well on bottom of aircraft.

Question 8

406. What happens when WAI is selected to On?

Answer 8

WAI operates regardless of altitude or ice detection.

Question 9

407. What do blue wing anti-ice lines indicate on ECS/PRESS synoptic page?

Answer 9

WAI temperature ≤ 100°F

Question 10

408. What do green wing anti-ice lines indicate on ECS/PRESS synoptic page?

Answer 10

Normal temperature (100 to 180°F)

Question 11

409. What do amber WAI lines indicate on ECS/PRESS synoptic page?

Answer 11

Abnormal condition: wing temperature < 100°F for four minutes after it’s commanded to On or

> 180°F.

Question 12

410. In regards to FMS programming, what must you do if you plan to takeoff with WAI and CAI selected to On?

Answer 12

Remember to select Cowl+Wing in TSC Perf Takeoff AC Cfg or V Speeds will remain amber after parking brake release.

Question 13

411. Where is CAI exhausted overboard?

Answer 13

Hot air travels through CAI supply duct to heat lip skin and exhausts overboard through vent located at bottom of engine.

Question 14

412. What happens when CAI is selected On?

Answer 14

CAI valve opens regardless of altitude or ice detection.

Question 15

413. What kind of rain removal system does the aircraft have?

Answer 15

There’s a surface coating on windshield that deflects water.

Question 16

414. What’s the caution associated with removal of ice from windshield?

Answer 16

Use of mechanical means to remove ice from windshield causes degradation and should be avoided.

Question 17

415. What happens when EVS Window Heat is selected?

Answer 17

The switch blooms cyan, EVS window graphic turns green and EVS window heats for five (5) minutes. Otherwise, operation is automatic if aircraft is airborne and ice is detected.

Question 18

416. What happens when Cabin Window Heat is selected on the ground?

Answer 18

The switch turns green and cabin windows are heated for ten (10) minutes: they’re heated automatically airborne.

Question 19

417. What happens when TAT Probe Heat is selected on ground?

Answer 19

The switch turns green and TAT probes are heated for one (1) minute; otherwise not heated on ground < 100 kts.