ETP, PNR, PSR, PSD

Question 1

What are the main four points to be do in planning?

Answer 1

1) Équi-time point
2) Point of no return
3) Point of Safe Return
4) Point of Safe Diversion

Question 2

What is the equi-time point?

Answer 2

• The position from which it takes equal time to fly to either of two airfields.
• Based solely on time

Question 3

What is the equation for critical point or equi time point?

Answer 3

X = (D x H)/ (O + H)

Question 4

What is the point of no return?

Answer 4

The last point at which the aircraft can return to the departure airfield with adequate fuel reserves intact

Question 5

What is formula for point of no return?

Answer 5

T = (P x H)/(O + H)
Where P = Max Safe endurance
H = Groundspeed home
O = Groundspeed out

Question 6

What is the point of safe diversion ?

Answer 6

Determines the point furtherest point along track at which the aircraft can divert to an off track airfield with nominated fuel reserves intact.