NTSB Identification: MIA97LA174.
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Accident occurred Thursday, May 22, 1997 in SAN JUAN
Probable Cause Approval Date: 09/30/1997
Aircraft: Convair CV-240, registration: N355T
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot stated that during cruise flight, the flight crew noticed that the left engine had high temperature and that its oil pressure started to fluctuate. A precautionary engine shutdown was performed. A short time later, the right engine started to fail, and the airplane would not maintain altitude. The left engine was restarted, but the flight crew could not maintain altitude. A forced landing was made on a beach; however, the airplane came to rest in 5 feet of water in the Atlantic Ocean. Examination of the left engine revealed a failure of the front master rod bearing. Examination of the right engine revealed a failure of the aft master rod.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

failure of the aft master rod in the right engine, and failure of the front master rod bearing in the left engine, which resulted in a forced landing on a beach and a subsequent encounter with ocean water.

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