What is QFU in aviation?

Related questions

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2. What is the difference between AGL and MSL?
3. What is elevation in aviation?
4. What does Qfe Qnh Qne stand for?
5. What is QFE and QNH?
6. How do you write barometric pressure?
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Tags

1. #aviation
2. #suggest
3. #heading
4. #stands
5. #magnetic
6. #runway
7. #definition