How long will an ELT transmit signals?

An Emergency Locator Transmitter (ELT) is designed to transmit distress signals after an accident, aiding in search and rescue operations. The correct duration for which an ELT will typically transmit signals is 48 hours. This timeframe is standardized in many aviation regulations to ensure there is sufficient time for rescuers to locate a distressed aircraft.

The signals emitted by an ELT are designed to help search and rescue teams pinpoint the location of the downed aircraft efficiently. The 48-hour transmission period balances functionality with considerations for battery life and the likelihood of rescue operations occurring within that timeframe. Therefore, this option accurately reflects the operational capabilities of most ELTs in use today.