Nav - ETP and PNR

You plan a night-time flight from A to B which is 102nm total distance. Your TAS is 105kt and you have a wind (A-B) of +15kt. If you load up 100L of fuel and your fuel burn is 36L an hour, what is PNR distance and ETP time?

• PNR = 100nm ETP = 22 minutes

• PNR = 50 minutes ETP = 44nm

• PNR = 0.84 ETP = 44nm

• PNR = 60nm ETP = 25 minutes

Answer explanation

You need to get to Kaikoura from Christchurch but due to unforeseen reasons you can't get any fuel in Christchurch and you only have 80 minutes safe endurance (day). The weather in kaikoura is marginal but your boss is insistent you go. Your arrow has a TAS of 130kt and fuel consumption of 42L an hour. Its a 22kt headwind from NZCH to NZKI which is 95nm away. What is your PNR in minutes and distance?

• 45 minutes 81nm

• 35 minutes 63nm

• 55 minutes 99nm

• 25 minutes 45nm

Answer explanation

You plan a daytime flight from A to B which is 144nm total distance. Your TAS is 105kt and you have a wind of +20kt to PNR and +30 to B. If you load up 150L of fuel and your fuel burn is 36L an hour, what is PNR distance and time?

• 65 minutes 110nm

• 99 minutes 206nm

• 90 minutes 187nm

• 72 minutes 123nm

Answer explanation

You plan a day trip from A to B in your Texan. It has a TAS of 315kt and a fuel consumption of 30GHP. You load on 110 gallons and check your flight plan which states a total distance of 132nm and a tailwind of 18kt from B to A. What is PNR and ETP distance?

• PNR = 500nm ETP = 70nm

• PNR = 50nm ETP = 70nm

• PNR = 70nm ETP = 50nm

• PNR = 700nm ETP = 500nm

Answer explanation

You fly from A to B which is a total distance of 242nm. TAS is 120kt.

Wind from A to ETP is +10kt

Wind from ETP to B is +15kt

What is the ETP time and distance from B?

• 94nm 43 minutes

• 108nm 49 minutes

• 134nm 60 minutes

• 162nm 72 minutes

Answer explanation

You're on a night-time return leg from A back to B. Your fuel remaining is 124L and your fuel burn is 34L an hour. TAS is 90kt and the flight is 325nm. The wind from A to B is an average of +20kt. What is your PNR time in hours from B and do you have enough fuel to make it to B with reserves still remaining?

• 1.83 hours from B, yes

• 1 hour from B, yes

• 1.83 hours from B, no

• 1 hour from NZCH, no

Answer explanation

NZOU to NZGT (Glentanner)

Total distance: 82nm

TAS: 115kt

Wind from NZOU to ETP: +10kt

Wind from ETP to NZGT: +15kt

What is ETP distance from NZGT?

• 36nm

• 46km

• 46nm

• 36km

Answer explanation

NZOU to NZHK (Hokitika)

Total distance: 157nm

TAS: 150kt

Wind from NZOU to ETP: -10kt

Wind from ETP to NZHK: -5kt

What is ETP time?

• 0.59 hours

• 0.42 hours

• 0.77 hours

• 1.22 hours

Answer explanation

You plan a flight from NZCH to the very top of NZ which is a total distance of 698nm. You plan to do it in the JC which has a TAS of 76kt.

Wind from NZCH to ETP: +5kt

Wind from ETP to top of NZ: +10kt

What is ETP distance and time in hours?

• 442nm 6.3 hours

• 315nm 3.8 hours

• 290nm 8.7 hours

• 380nm 8.5 hours

Answer explanation

Calculate PNR given the following information for a daytime flight from NZOU to NZMF (Milford Sound).

Fuel load: 120L

Fuel burn: 30L an hour

TAS: 120kt

Wind from NZOU to PNR: -20kt

Wind from PNR to NZMF: +10kt

• 2.5 hours

• 3 hours

• 1.5 hours

• 2 hours

Answer explanation