- Thread starter m1kehot3l
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I'm going to the haunted house of Muskogee in order to prepare for the test. lol. It seems cool tho.lol you'll develop an ear for that after some time. most controllers i know can have multiple conversations going on at once and follow along on all of them. Def takes time to develop though, I'm surprised they test that on an entry exam

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I dont know if this is right but...I found the distance in 90 mins at 250 and then found the difference from 330nmAn airplane with a ground speed of 250kts Is flying into a headwind. If it has traveled 330nm in 90 minutes. How fast is the headwind?

What's the fastest way to calculate this in your head?

Wow I wasn't even looking at it like that thinks

Yes the answer is 30 but I'm trying to find the best way to do this in your headI believe the headwind is 30 knots, if that hasn't already been said.

The plane goes 330 nautical miles in 90 minutes. So it's ground speed is 220 knots each hour. Or 2/3 of 330. The ground speed is 220. The true airspeed is 250. The difference between those numbers is 30.Yes the answer is 30 but I'm trying to find the best way to do this in your head

OK so best way is to break it down thanksThe plane goes 330 nautical miles in 90 minutes. So it's ground speed is 220 knots each hour. Or 2/3 of 330. The ground speed is 220. The true airspeed is 250. The difference between those numbers is 30.

Question should have said "true airspeed of 250kts" I'm pretty sure...An airplane with a ground speed of 250kts Is flying into a headwind. If it has traveled 330nm in 90 minutes. How fast is the headwind?

What's the fastest way to calculate this in your head?

(90 min = 1.5 hours)

330/1.5 = 220 (D/T=S)

250kts - 220kts = 30kts

Headwind of 30 knots is the answer.

Lol I'm trying to figure out how you got it your way

ThanksQuestion should have said "true airspeed of 250kts" I'm pretty sure...

(90 min = 1.5 hours)

330/1.5 = 220 (D/T=S)

250kts - 220kts = 30kts

Headwind of 30 knots is the answer.