What happens if an aircraft is overloaded beyond its maximum gross weight?

When an aircraft is overloaded beyond its maximum gross weight, it can significantly impact handling characteristics and performance. The increased weight can lead to control difficulties, as the added mass affects the aircraft's ability to respond to pilot inputs and makes it harder to maneuver effectively. This can result in longer takeoff distances, reduced climb rates, and compromised stability, all of which elevate the risk of an accident.

Furthermore, exceeding the maximum gross weight can lead to increased wear and tear on the aircraft's structure and systems, potentially resulting in mechanical failures. Therefore, ensuring that the aircraft remains within its weight limits is crucial for maintaining safe operational parameters and overall airworthiness.

The other options do not accurately reflect the consequences of exceeding maximum gross weight. It’s not about flying faster, being grounded definitively, or the weight being inconsequential if fuel levels are low; these scenarios fail to recognize the serious and complex implications of operating an overloaded aircraft.