The crash in 1952 killed 52 people and led to requirements for the passenger safety briefings given on every commercial flight.

All 69 passengers and crew members on board the plane survived the initial crash in 1952, but 52 of them later died after the plane's tail section broke off and the fuselage sank into the ocean.

The Pan American Airways Clipper Endeavor crashed in April 1952 after multiple engine failures forced a water landing ...

Seventy-four years after a Pan Am flight crashed into the water off Puerto Rico, killing 52 people and prompting sweeping reforms including preflight passenger safety briefings, an aviation search ...

The deaths of 52 people on the Clipper Endeavor led to the introduction of mandatory pre-flight safety briefings.

Searchers have found the wreckage from a Pan Am flight that plunged into the ocean off Puerto Rico in 1952, an accident that killed 52 and led to requirements for the passenger safety briefings given ...

The wreckage of a Pan Am plane that crashed 74 years ago, and led to safety briefings becoming mandatory on flights, has been found off the coast of Puerto Rico.

Some 74 years after a Pan American Airways flight crashed into the water off the coast of ​Puerto Rico, an aviation search team said it ‌found the wreckage sitting on the ocean floor.

Discovery Channel announces the intact wreckage of 1952 Pan Am Clipper Endeavor located off Puerto Rico. 52 drowned, 17 survived.

The underwater wreckage of the Pan American Airways flight that crashed and killed 52 people off Puerto Rico’s coast in 1952 has been found, according to a news release.

An aviation search team has found the wreckage of a plane that crashed in the Atlantic Ocean more than seven decades ago.

A search team has found the wreckage of a New York City-bound Pan Am flight more than 74 years after it crashed off Puerto Rico, killing 52 and prompting major changes in pre-flight safety procedures.