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Given:

Distance from departure to destination: 875 NM
True track: 240°
W/V: 060/50
TAS: 500 kt

What is the distance and time of the PET from the departure point?

  • A
    Distance: 394 NM Time: 43 min
  • B
    Distance: 481 NM Time: 64 min
  • C
    Distance: 438 NM Time: 53 min
  • D
    Distance: 716 NM Time: 78 min

Wind is completely tail wind in the way out and headwind in way home
GS Out: 550 kts
GS Home: 450 kts

Distance to PET = (GS home x Distance) / (GS out + GS home)
Distance to PET = ( 450 x 875) / (550 + 450) = 394 NM

Time to PET = Distance to PET / GS out
Time to PET = 394 / 550 = 0.71 hr = 43 minutes

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