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How often must a required emergency locator transmitter be inspected?

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  1. Within 12 calendar months
  2. Every 24 calendar months
  3. Every 100 hours of flight

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References

  1. 14 CFR 91.207 Emergency locator transmitters www.ecfr.gov/current/title-14/section-91.207 Checked 2026-10-09.

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FlyingUnder the usual Part 91 annual-inspection rule, what is the inspection interval?FlyingBefore using a required ATC transponder, how recently must it have been tested and inspected?FlyingAn emergency locator transmitter's battery must be replaced after the ELT has been used for how long in total?

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