State Ports Authority Chairman Harry Butler was flying the plane from Georgetown to Columbia on Thursday morning when he lost both radios.
The weather wasn't good enough to land in Columbia without the radio, so he turned back to the coast, where it was clear.
En route, his co-pilot sent a message on a signal device. He was supposed to type 7600, which means "lost communications." But instead, he punched in 7500, which reports a hijacking, Butler said.
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