VFR-on-top: A pilot's responsibility
What is VFR-on-top?
VFR-on-top is a clearance that allows a pilot to fly under visual flight rules (VFR) on top of a layer of clouds. This clearance is only given when the reported weather at the airport has a ceiling at or above 1000 feet and visibility 3 miles or more.
When is VFR-on-top appropriate?
VFR-on-top is appropriate when the pilot has good visibility and can maintain visual contact with the ground. This clearance is not appropriate when there is any precipitation, fog, or other obscuration that would reduce visibility.
What are the risks of VFR-on-top?
There are several risks associated with VFR-on-top, including:
- The pilot may lose visual contact with the ground if the clouds lower or the visibility decreases.
- The pilot may encounter icing if they fly into a cloud layer.
- The pilot may collide with another aircraft that is not visible due to the clouds.
By requesting a VFRontop clearance the pilot assumes the sole responsibility for the safe conduct of the flight.
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