Runways Flashcards
What is the stop-way?
Obstacle free area at the end of the runway for emergency stopping.
What is the threshold to threshold area called?
Landing distance available.
What is the part of the runway called, used in take off, with lines on it but behind the threshold?
Starter extension.
What does TORA stand for?
Take-off runway available.
What is the clearway?
Area at the end of the TORA and extends 75m either side.
What is the LDA + Starter Extension equal to?
TORA
What is TORA + Stop-way?
Asda (accelerated stop distance available)
What is ASDA?
TORA + Stop-way
What is the minimum width of the clearway in feet?
152m (500ft) by 50% of the TORA (max)
What does TORA + Clearway equal?
TODA
What is the max slope of a clearway?
1.25%
What is a displaced threshold also known as?
Starter extension.
TODA = TORA + Clearway or what (choose smallest)
TORA x 1.5
When does a balanced runway occur?
TODA = ASDA
What do you have to remove to make a balanced runway?
Removed stop-way or clearway.
Using the runway heading, what will sin give us?
Crosswind.
Using the runway heading, what will cos give us?
Head/tail wind
What happens to ASD on an upsloping runway?
Increases
Every blank % of slope causes a blank % change of distance needed.
1 % - 5 %
What would you times the take off distance by if there is a 1 slope up?
1.05
What would you times the take off distance by if there is a 1 slope down?
1
What is the equation for runway slope?
Difference in threshold elevations / TORA x 100
What does PCN stand for?
Pavement classification number.
What does PCN tell us?
The relative load bearing strength of the surface.
On a PNC what does F stand for within the code?
Flexible.
On a PNC what does R stand for within the code?
Rigid.
On a PNC what does A/B/C stand for within the code?
Sub grade surface strength.
What does ACN tell us?
The aircraft classification number.
What does the ACN mean?
The relative load the aircraft will apply to the surface.
PCN 46. If the number was smaller, what does this mean?
Weaker surface.
ACN (</>) PCN
ACN < PCN
When can ACN exceed PCN by 10%?
The surface is older than 12months and occasional annual movements (occassional)
When can ACN exceed PCN by 25% ?
All 10% restrictions + inspections before and after a movement
When can ACN exceed PCN by >50% ?
Emergency’s only
What is the name of an obstruction in the take off path that is a minimum hazard to an aircraft?
Frangible object.
