Wingtip vortices are tubes of circulating air that are left behind a wing as it generates lift.

They are caused by the difference in pressure above and below the wing causing the air to 'escape' from the high pressure area below the wing to the low pressure area above the wing, by rolling around the tip of the wing. This creates a vortex that trails behind the wing.

NDB errors:

Interference from other NDB’s

• Static, especially near thunderstorms

• Night effect Coastal refraction

• Mountain effect

• Aircraft quadrantal error

The glide range is not affected by the weight. Howver Vmd is. The heavier the aircraft, the higher the Vmd.

The speed is too low for an indication.

Antiskid has a detection system that senses the moment a wheel stops rotating.

Once it senses that the wheel is not rotating, the antiskid system releases brake pressure. This allows the wheel to regain traction with the surface, so that break application can be resumed and prevents complete loss of controllability.

8.000ft

Frequency range from 200-1750kHz, medium and low range frequency bands.

Swept wings, thin wings.

They provide at least 1000ft clearance over obstacles within 25NM of the homing facility.

Yes, with the modern high bypass turbofans the N1 compressor works as a huge propeller, it takes a big mass of air and gives it a relative small acceleration.

Around 70% of the air will bypass the core of the engine, only 30% of air will be compressed further and will eventually go through the combustion chamber.