NTSB Identification: MIA90FA081.
The docket is stored on NTSB microfiche number 41597.
Nonscheduled 14 CFR
Accident occurred Thursday, March 08, 1990 in MIAMI, FL
Probable Cause Approval Date: 03/05/1993
Aircraft: AEROSPATIALE 350D, registration: N5778W
Injuries: 2 Fatal,1 Serious.

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 HELICOPTER WAS IN CRUISE FLT OVR THE OCEAN, WHEN THE PLT HEARD A LOUD NOISE & NOTED A LOSS OF ENG POWER. HE ENTERED AN AUTOROTATION & TOLD THE PSGRS TO PUT ON THEIR LIFE JACKETS. AT ABT 100' ABV THE WATER, HE DEPLOYED THE EMERG FLOATS, THEN SUCCESSFULLY LANDED IN THE OCEAN ABOUT 3 MI FROM SHORE. AFTER LNDG, A WAVE HIT THE HELICOPTER & IT ROLLED OVR. THE PLT & PSGRS GOT ONTO THE BELLY OF THE HELICOPTER, THEN THE PLT DOVE UNDER THE WATER & RETRIEVED THE ELT. HOWEVER, AFTER HE ACTIVATED THE ELT, ANOTHER WAVE HIT & THE PLT DROPPED IT AS HE REACHED TO HELP A PSGR. ONE PSGR EXPIRED ABT 8 HRS LATER & THE OTR PSGR EXPIRED ABT 15 HRS AFTER THE ACDNT. BOTH DIED FM DROWNING. THE ACDNT OCCURRED AT ABT 1115 EST; THE COAST GUARD WAS NOTIFIED OF THE SITUATION AT 1530 EST. THE PLT WAS RESCUED AT 0430 EST THE NEXT DAY. A SUBSEQUENT EXAM OF THE ENG REVEALED THAT A POWER TURBINE BLADE HAD FAILED FROM FATIGUE, WHICH RESULTED IN THE LOSS OF ENG POWER.

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

FATIGUE FAILURE OF AN ENGINE TURBINE BLADE, WHICH RESULTED IN A LOSS OF POWER. ROUGH OCEAN WATER IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.

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