FAA Ground School Practice Test

In what phase of flight is it particularly important to monitor battery life for an ELT?

1. During taxi

2. During takeoff and landing

3. During cruise

4. During pre-flight checks

The correct answer is: During takeoff and landing

Monitoring battery life for an Emergency Locator Transmitter (ELT) is especially critical during takeoff and landing phases of flight. This is due to the fact that these phases are statistically linked to a higher risk of accidents or emergencies when an aircraft is most vulnerable. In the event of an incident during takeoff or landing, the ELT serves as a vital tool for assisting search and rescue teams in locating the aircraft. If the battery of the ELT is low or dead, it would be unable to transmit a distress signal, which could significantly hinder rescue efforts. While it is also important to check battery life during taxi, cruise, and pre-flight checks, the urgency of ensuring the ELT is operational is heightened during takeoff and landing when the likelihood of needing it is increased.