How may the battery replacement date be verified for an ELT?

How may the battery replacement date be verified for an ELT?

• A. By the placard outside of the transmitter
• B. By the serial number on the unit
• C. By the date printed on the battery
• D. By the maintenance log

Answer: (A)

The key point is that the battery replacement date for an ELT is shown on a placard mounted on the outside of the transmitter. This placard is specifically updated to reflect the next due date for battery replacement, so it provides a quick, always-visible reference for verification during preflight checks or maintenance. Why this is the best source: the placard is the intended, immediate indicator of service life for the current battery and is updated whenever the battery is replaced. The date on the battery itself can be the manufacture date and may not represent when the battery needs replacement. The maintenance log contains history, but it isn’t as convenient or definitive for a quick check as the visible placard.

The key point is that the battery replacement date for an ELT is shown on a placard mounted on the outside of the transmitter. This placard is specifically updated to reflect the next due date for battery replacement, so it provides a quick, always-visible reference for verification during preflight checks or maintenance.

Why this is the best source: the placard is the intended, immediate indicator of service life for the current battery and is updated whenever the battery is replaced. The date on the battery itself can be the manufacture date and may not represent when the battery needs replacement. The maintenance log contains history, but it isn’t as convenient or definitive for a quick check as the visible placard.