Maintenance Of Ice And Rain Protection Systems

Question 1

When must rubber blades of windscreen wipers be replaced

Answer 1

Worn to limits

Damaged

Contaminated

Question 2

Maintenance of windscreen wipers

Answer 2

Rubber blades replaced when applicable

Routine lubrication of the system

Checks for clearance between blades and screen surrounds at the extremes of arc

Check for correct tension in the wiper arms

Question 3

Servicing tasks of thermal anti and de-icing systems

Answer 3

Examine ducting for signs of cracks,damage, overheating and security of attachment to the AC structure

Examine duct lagging for signs of discolouration and damage, particularly for blow holes in lagging, indicating a possible leak from a duct

Examine all system components for security of attachment to aircraft

Question 4

Maintenance of mechanical de-icing systems

Answer 4

Operational checks, adjustments, troubleshooting and inspections for damage, deterioration punctures and security of attachment of the boot

Question 5

Problems with electrically heated windscreens

Answer 5

Delamination

Discolouration

Scratches

Arcing