Which of the following is NOT a requirement for notifying the FAA?

Scheduled maintenance is not a requirement for notifying the FAA in the same way that the other listed events are. The FAA requires notification for serious incidents that could affect safety, such as mid-air collisions, in-flight fires, and significant property damage exceeding $25,000. These events pose immediate threats to flight safety or significant legal implications that must be reported to maintain oversight and respond to safety issues.

In contrast, while maintenance is critical for aircraft safety and proper operation, it is generally a routine process monitored by the aircraft owner or operator according to a scheduled maintenance program. As such, it does not require an immediate report to the FAA unless it involves a specific event or result that falls under serious incident reporting requirements.