Which factor could lead to a violation of controlled airspace?

Flying above the altitude ceiling without clearance is indeed a violation of controlled airspace rules. In controlled airspace, there are specific altitude requirements that must be adhered to, and exceeding these limits without the proper authorization can lead to significant safety risks. Controlled airspace is designed to ensure the safe and orderly flow of air traffic, and each layer has defined vertical limits. If an aircraft operates above these limits without clearance, it not only breaches regulations but can also potentially interfere with other aircraft that are operating at their assigned altitudes.

The necessity for clearance in controlled airspace is crucial, as air traffic control communicates and manages traffic, ensuring that various aircraft maintain safe distances from one another. Therefore, violation of altitude restrictions can compromise safety, making it essential for pilots to understand and comply with airspace regulations to mitigate risks associated with air traffic management.