How often must an Emergency Locator Transmitter be inspected for airplanes?

An Emergency Locator Transmitter (ELT) must be inspected every 12 months to ensure it is functioning properly and will be operational in case of an emergency. This annual inspection is part of the regulatory requirements set forth by aviation authorities like the FAA. During this inspection, the transmitter is tested to confirm that it can emit signals as intended.

Regular inspections are crucial since an ELT that fails to operate when needed can significantly hinder search and rescue efforts after an aircraft incident. By adhering to the 12-month inspection schedule, pilots can ensure that their ELT is in compliance with safety regulations and can reliably function in emergencies.

In contrast, other listed timeframes such as 24 months, 30 days, and 6 months are either not sufficient or overly frequent compared to the established requirement. Understanding this timeline is key to maintaining safety standards in aviation operations.