The phrase "instance occurred" is correct and can be used in written English.
It is commonly used to describe a specific event or occurrence that took place. Here is an example of how it can be used in a sentence: "The instance occurred last week during the company's annual meeting, causing chaos among the employees."
Another instance occurred earlier in 2016.
The most risible instance occurred in 2009 when, in an absurd effort to prevent the spread of swine flu, the government decided to slaughter all pigs in Egypt.
A notable instance occurred in 1957, in the wake of Brown v. Board of Education, when Orval Faubus, the governor of Arkansas, resisted the desegregation of a high school in Little Rock.
Such an instance occurred in 1989, when both Saturn and Titan occulted the bright star 28 Sagittarii, allowing astronomers to observe ring and atmospheric structures at a level of detail not seen since the Voyager encounters.
The most striking instance occurred Tuesday, when the State Administration of Radio, Film and Television ordered 34 major satellite television stations to limit themselves to no more than two 90-minute entertainment shows each per week, and collectively 10 nationwide.
The Penn Central debacle, for instance, occurred in the first year that PC was audited by Peat Marwick.
The best instance occurs when the dancers balance upside down on their necks.
The separation of the two strands of DNA, for instance, occurs in one-millionth of a second.
Their first meeting, for instance, occurs when Mary snags a heel in a manhole cover and is nearly flattened by a runaway garbage bin.
Such extremes can, for instance, occur in the presence of motion and/or light changes in the scene.
In other words, if discrete, episodic cognitive events are all that constitutes the mental domain, how does appropriation and grasping, for instance, occur?
