NTSB Identification: MIA93FA198.
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Accident occurred Sunday, September 19, 1993 in AGUADILLA
Probable Cause Approval Date: 09/13/1994
Aircraft: SOCATA TB 10, registration: N104F
Injuries: 3 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

A PREFLIGHT WEATHER BRIEFING WAS NOT OBTAINED BEFORE DEPARTURE. THUNDERSTORMS WITH HEAVY RAIN SHOWERS WERE FORECAST. DURING THE FLIGHT AN INDIVIDUAL IN THE AIRPLANE REQUESTED WEATHER ADVISORIES FROM THE UNICOM OPERATOR WHO ADVISED THE CREW OF A THUNDERSTORM NEAR THE AIRPORT. THE FLIGHT PROCEEDED TOWARD THE THUNDERSTORM ACCORDING TO WITNESSES BUT THERE WERE NO WITNESSES TO THE ACCIDENT. THE AIRPLANE MINUS THE RIGHT WING WAS RECOVERED. EXAMINATION OF THE AIRPLANE REVEALED THAT THE LEFT WING SEPARATED NEAR THE WING ROOT AND ABOUT 20 INCHES OUTBOARD OF THE OUTBOARD FUEL SENSOR DUE TO OVERLOAD. THE RIGHT WING FAILED NEAR THE WING ROOT DUE TO OVERLOAD. EXAMINATION OF THE FLIGHT CONTROLS REVEALED NO EVIDENCE OF PRE-IMPACT FAILURE OR MALFUNCTION. EXAMINATION OF THE ENGINE ASSEMBLY MINUS THE MAGNETOS, AND FUEL PUMP HOUSING REVEALED NO EVIDENCE OF PRE-IMPACT FAILURE OR MALFUNCTION. NO OCCUPANT HAD AN INSTRUMENT RATING. NO DETERMINATION COULD BE MADE AS TO WHO WAS FLYING THE AIRPLANE.

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

IN FLIGHT ENCOUNTER WITH A LEVEL II THUNDERSTORM AND FLIGHT INTO KNOWN ADVESE WEATHER BY THE PILOT IN COMMAND. CONTRIBUTING TO THE ACCIDENT WAS FAILURE OF THE PILOT IN COMMAND TO OBTAIN A PREFLIGHT WEATHER BRIEFING.

Full narrative available

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