How may the operation of an installed emergency locator transmitter (ELT) be verified during aircraft inspection?

How may the operation of an installed emergency locator transmitter (ELT) be verified during aircraft inspection?

• A. By tuning a communications receiver to the civil emergency frequency and activating the ELT momentarily within five minutes after the hour
• B. By performing a visual inspection of the ELT battery only
• C. By checking the ELT's serial number with maintenance logs
• D. By analyzing the aircraft's flight data for ELT signal indications

Answer: (A)

The key idea is to verify that the ELT actually transmits and can be received on the standard distress frequency. To do this, you use a communications receiver tuned to the civil emergency frequency and briefly activate the ELT, ideally within five minutes after the hour. This short test confirms the transmitter, wiring, and power are functioning and that the signal can be detected by ground stations or fault detectors monitoring that frequency. The five-minute-after-the-hour window helps ensure the test aligns with monitoring schedules and reduces potential conflicts with other timed transmissions. Merely visually inspecting the battery doesn’t prove the beacon actually transmits, checking a serial number doesn’t prove operational capability, and analyzing flight data requires data showing an ELT signal that isn’t typically available in a standard inspection.

The key idea is to verify that the ELT actually transmits and can be received on the standard distress frequency. To do this, you use a communications receiver tuned to the civil emergency frequency and briefly activate the ELT, ideally within five minutes after the hour. This short test confirms the transmitter, wiring, and power are functioning and that the signal can be detected by ground stations or fault detectors monitoring that frequency. The five-minute-after-the-hour window helps ensure the test aligns with monitoring schedules and reduces potential conflicts with other timed transmissions. Merely visually inspecting the battery doesn’t prove the beacon actually transmits, checking a serial number doesn’t prove operational capability, and analyzing flight data requires data showing an ELT signal that isn’t typically available in a standard inspection.