What are the requirements for ELT installations?
Turbojet-powered aircraft, part 91, US operations: Starting January 1, 2004 an approved ELT must be installed. An ELT meeting TSO-C91 installed prior to June 21, 1995 is acceptable. An ELT installed after June 21, 1995 must meet TSO-C91a or TSO-C126. No person may take off an airplane for flight over water more than 30 minutes flying time or 100 nautical miles from the nearest shore, whichever is less, unless it has on board the following survival equipment: • A life preserver, equipped with an approved survivor locator light, for each occupant of the airplane. • Enough liferafts (each equipped with an approved survival locator light) of a rated capacity and buoyancy to accommodate the occupants of the airplane. • At least one pyrotechnic signaling device for each liferaft. • One self-buoyant, water-resistant, portable emergency radio signaling device that is capable of transmission on the appropriate emergency frequency or frequencies and not dependent upon the airplane power supply (
