[.041 Safety Wire]

Thanks Moggy, I couldn't let the above statement pass as a fact of Aerodynamic knowledge. I spent 34 years in and around all types of aircraft so I somewhat know what I am talking about. I don't know where that CFI came up with his info but as I said he needs to take a refresher course, You're right about the Fiesler. I saw Couriers both hover and fly backwards at Oshkosh back in the 80,s Its a pretty neat thing to see. It also a common mistake that aircraft stall at a certain speed which in fact an aircraft can be stalled at any speed under the right circumstances.

So if you fly into a 30mph wind, your true airspeed will be 30mph slower than if there was no wind. And aircraft could fly at 0mph in a strong wind; it has happened. Indeed,

Your airspeed will be your speed through the air your ground speed will be thirty mph slower.

I think you guys are getting confused about airspeed and speed over the ground. An aircraft flys at a certain airspeed regardless of headwind tailwind or crosswind. If an aircraft is flying between two points at 100 miles per hour, 100 miles apart it will take him approx 1 hour to reach this point If he is flying into a 50 mph headwind his airspeed is still 100 but his groundspeed is now 50mph so it will take him 2 hrs to reach his destination. His airspeed does not change.

The definition of airspeed: The forward speed of an object relative to the air through which it is flying; commonly used in reference to canopies, airfoils, or aircraft.