Federal Aviation Regulations Practice Test 2025 – Complete Exam Prep

The requirement for an aircraft to be equipped with a 406 MHz Emergency Locator Transmitter (ELT) is specifically tied to operational altitude. According to Federal Aviation Regulations, when an aircraft operates at altitudes above 12,500 feet in controlled airspace, it must be outfitted with a 406 MHz ELT. This is because the 406 MHz ELT provides improved detection capabilities through satellite coverage and enhances search and rescue operations.

When flying above this altitude, the enhanced safety measures of having a 406 MHz ELT become critical, as the likelihood of needing assistance due to emergencies increases with altitude. The other options present various altitudes and contexts that do not align with the specific regulatory requirement. For instance, operating above 10,000 feet in uncontrolled airspace or even above 8,000 feet during all operations does not meet the specific threshold outlined for the mandatory installation of a 406 MHz ELT. Furthermore, the requirement is not limited to international flights, reinforcing the necessity for this equipment based solely on altitude and airspace classification.

Thus, the requirement for an aircraft to have a 406 MHz ELT applies unambiguously at altitudes above 12,500 feet in controlled airspace, ensuring enhanced safety for pilots