Batteries used in the emergency locator transmitters
For Batteries used in the emergency locator transmitters, interval is When the transmitter has been in use for more than 1 cumulative hour; or (2) When 50 percent of their useful life (or, for rechargeable batteries, 50 percent of their useful life of charge) has expired; applies to is emergency locator transmitters required by paragraphs (a) and (b) of this section; consequence if lapsed is must be replaced (or recharged, if the batteries are rechargeable); regulation section is § 91.207, verified against its source on 2026-08-06.
- Inspection or test item
- Batteries used in the emergency locator transmitters verified
- Interval
- When the transmitter has been in use for more than 1 cumulative hour; or (2) When 50 percent of their useful life (or, for rechargeable batteries, 50 percent of their useful life of charge) has expired verified
- Applies to
- emergency locator transmitters required by paragraphs (a) and (b) of this section verified
- Consequence if lapsed
- must be replaced (or recharged, if the batteries are rechargeable) verified
- Regulation section
- § 91.207 verified
What the source says
Batteries used in the emergency locator transmitters required by paragraphs (a) and (b) of this section must be replaced (or recharged, if the batteries are rechargeable)— (1) When the transmitter has been in use for more than 1 cumulative hour; or (2) When 50 percent of their useful life (or, for rechargeable batteries, 50 percent of their useful life of charge) has expired, as established by the transmitter manufacturer under its approval.
— ecfr.gov, retrieved 2026-08-06
Source
- ecfr.govhttps://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-14.xml?part=91§ion=91.207