Contaminated Runways Flashcards
What is the definition of a contaminated runway?
Runway 25% covered with 3mm of precipitation.
Is a wet runway a contaminated runway?
No.
What would be used to indicate there is a contaminated runway?
Snow / flooded / water patches ect
What type of runway is reflective?
Wet runway.
What is the definition for a damp runway?
Non reflective - non contaminated.
On a wet runway, what happens to TOD?
No change.
On a contaminated runway, what happens to TOD?
Increases
What happens to TOD on a contaminated compacted snow runway ?
No change.
What are the two types of drag due to contamination?
Spray impingement drag and displacement drag.
What is the value of a good breaking coefficient?
> 0.4
What landing technique would you use in colder weather?
Hard landing.
When does viscous hydroplaning occur?
On a dirty runway.
What is reverted rubber hydroplaning?
If the tyres lock up post skid.
What is dynamic hydroplaning?
The tyres ride a layer of water.
What is the equation for spin down hydroplaning speed (Vp)?
9 x square root of tyre pressure
What does spin down mean?
Rejected take off.
What is Vp?
Hydroplaning speed.
What is the equation for spin up hydroplaning speed?
7.7 x square root of the tyre pressure.
In stormy conditions, what should you do to your airspeed?
Increase it by 15kts.
Where is information regarding flight in cold weather located?
Company operations manual, part B.
What three chapters are located within the company operations manual, part B?
Procedures, performance, limitations.
