A National Airlines plane explodes in midair, killing all 34 aboard. Investigators suspect that a passenger, bent on suicide, had brought a bomb aboard.
Antulio Ramirez Ortiz hijacks a National Airlines flight to Cuba after it takes off in Florida. It is the first aerial hijacking of a U.S. passenger plane.
The U.S. government begins placing armed guards on commercial planes when requested by airlines or the FBI.
Numerous airliners are hijacked to Cuba. Two Palestinian terrorists carry out the first hijacking of a U.S. aircraft outside the Western Hemisphere when they divert TWA Flight 840 to Damascus, Syria, after takeoff from Rome.
The Federal Aviation Administration develops a hijacker psychological profile to be used along with metal detectors to screen passengers and their bags. Eastern Air Lines begins using this system, and several airlines follow.
Arab terrorists hijack four airliners, including Pan American World Airways and TWA jets, and blow them up on the ground in the Mideast after releasing all aboard.
The Customs Air Security Officers Program ("Sky Marshals") is created to place armed officers, dressed as passengers, on aircraft.
Claiming to have a bomb, a man traveling as D.B. Cooper hijacks a flight in Portland, Ore., as it prepares for takeoff. After arriving in Seattle, he collects $200,000 in ransom and frees the passengers. He boards the plane, forces the crew to take off and parachutes away. He is never found.
The FAA reports that screening of passengers had produced 1,500 arrests and the recovery of a horde of weapons.
After a TWA flight takes off from New York's JFK airport, the airline is notified that a bomb is onboard. The plane returns to the airport, where a bomb-sniffing dog finds the device minutes before it is set to detonate.