Beech Model 200 Super King AirWaterlogged ELTATC advised crew the ELT may be inadvertently transmitting. Inspection revealed the ELT was filled with water, possibly due to a heavy rainstorm the previous day. The ELT was replaced and the aircraft returned to service.
Emergency Locator Transmitters (ELTs) experienced diverse malfunctions, including waterlogging, low transmitting power, unknown error codes, and dead batteries.
Critical component failures were observed, such as inoperative G-switches and a complete failure to activate after an aircraft impact.
Several AmeriKing ELT models (AK451, AK4512) showed recurring reliability issues, including uncommanded false activations (70% failure rate for one model) and persistent G-switch failures.
Manufacturer issues compounded the problems, as one ELT (AmeriKing AK4512D) could not be serviced due to an FAA cease and desist order against the manufacturer.
ATC advised crew the ELT may be inadvertently transmitting. Inspection revealed the ELT was filled with water, possibly due to a heavy rainstorm the previous day. The ELT was replaced and the aircraft returned to service.
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