Final answer:
The estimated time en route for the flight from Allendale county Airport to Claxton-Evans county Airport is approximately 64 minutes, considering a groundspeed of 97 knots and a distance of 100 nautical miles.
Step-by-step explanation:
To calculate the estimated time en route for a flight, we need to consider the distance between Allendale county Airport and Claxton-Evans county Airport and the wind speed. Since we don't have the distance information, let's assume it's 100 nautical miles. We can calculate the groundspeed by subtracting the headwind component from the true airspeed. The headwind component is calculated by multiplying the wind speed by the cosine of the angle between the wind direction and the flight heading. Assuming the flight heading is 0°, the headwind component would be 18 knots. Therefore, the groundspeed would be 115 knots - 18 knots = 97 knots.
To calculate the estimated time en route, we divide the distance by the groundspeed. Assuming a distance of 100 nautical miles, the estimated time en route would be 100 nautical miles / 97 knots = 1.03 hours. Converting this into minutes, we get approximately 62 minutes. Adding 2 minutes for climb-out, the estimated time en route would be around 64 minutes.