FAA Ground School Practice Test

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Prepare for the FAA Ground School Test. Study with practice questions and explanations. Master your exam!

Practice this question and more.

When must the battery in an emergency locator transmitter (ELT) be replaced or recharged if the battery is rechargeable?

After one half the battery's useful life
When the ELT is activated
Every 6 months
After one year

The correct answer is: After one half the battery's useful life

The requirement to replace or recharge the battery in an emergency locator transmitter (ELT) when it is rechargeable is based on ensuring that the device remains in optimal working condition for emergencies. The guideline specifies that the battery should be replaced or recharged after one-half of its useful life has elapsed. This practice ensures that the ELT is ready to function effectively when needed, as batteries can degrade over time and may not perform adequately if left unchecked. Selecting this option emphasizes the importance of maintaining the reliability of safety equipment. Waiting until activation or at arbitrary time intervals does not guarantee that the ELT will be operational in a critical situation. Additionally, the six-month period and the one-year period mentioned in the other options do not align with the specific recommendations for ensuring battery readiness and longevity outlined for rechargeable batteries in ELTs.