An 'incident' differs from an 'accident' in that:

An incident is an occurrence that affects or could affect safety but does not meet the definition of an accident

Correct

An incident involves fatalities

There is no difference

An incident only involves military aircraft

Explanation

An incident is a safety-related occurrence that does not result in serious injury or substantial damage but has the potential to affect safety.

Test yourself with random questions from Operational Procedures and all other ATPL subjects.