NTSB Identification: MIA88FA260.
The docket is stored on NTSB microfiche number 38194.
Nonscheduled 14 CFR operation of M D AIR SERVICES, INC.
Accident occurred Friday, August 19, 1988 in DUNCAN TOWN, Bahamas
Probable Cause Approval Date: 11/24/1989
Aircraft: PARTENAVIA P-68C, registration: N39272
Injuries: 6 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.

THE ACFT CRASHED IN THE OCEAN NR DUNCAN TOWN, BAHAMAS. THE WX ACCORDING TO WITNESSES WAS VMC. THE FLT HAD BEEN AIRBORNE ENROUTE FROM NASSAU FOR ABOUT 1 HR AND 20 MINUTES. WITNESSES ON A NEARBY BOAT SAID THE ACFT WAS FLYING IN A SLIGHT LEFT BANK WHEN THE LEFT WING SEPARATED FROM THE ACFT. THE ACFT ROLLED TO THE LEFT AND IMPACTED THE WATER. THE WRECKAGE SANK WHERE THE WATER WAS ABOUT 50 FT DEEP. THE LEFT OUTBOARD WING PANEL WAS RECOVERED AND EXAMINED AT THE NTSB LAB. ALL FRACTURES WERE FOUND TO BE FROM OVERSTRESS. NO PREEXISTING CRACKS WERE FOUND AND NO EVIDENCE OF FATIGUE OR FAILURE FROM CORROSION. THE WING TIP HAD CRUSHING DAMAGE AND A BLUE PAINT TRANSFER AS IF FROM A COLLISION. THE PARTLY BLUE VERTICAL STAB WAS DAMAGED FROM THE SEPARATED WING SECT STRIKING IT. THE WX REPORTED EN ROUTE WAS: BROKEN TO OVERCAST WITH RAIN SHOWERS AND ISOLATED THUNDERSTORMS. EXAM OF THE LATER RECOVERED INBOARD LEFT WING SECTION SHOWED SEPARATION OF THE OUTBOARD WING SECTION RESULTED FROM OVERSTRESS.

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

WING,SPAR..FAILURE,TOTAL

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

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

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