NTSB Identification: FTW84FA107.
The docket is stored on NTSB microfiche number 23937.
Accident occurred Wednesday, January 04, 1984 in MORGAN CITY, LA
Aircraft: AEROSPATIALE AS-355F, registration: N5792X
Injuries: 2 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 PLTS IN A HELICOPTER ENCOUNTERED FOGGY WEATHER DURING A POSITIONING FLT AND CRASHED INTO A LAKE ABOUT 4 MI FROM THE DEPARTURE POINT, A FISHERMAN WHO WITNESSED THE ACCIDENT SAID THE ACFT DESCENDED INTO THE WATER IN A NOSE LOW ATTITUDE. THE ACFT SKIPPED AND TUMBLED FOR ABOUT 100 YARDS BEFORE IT SANK. PLTS, WHO WERE SEARCHING IN THE AREA & THAT THERE WAS A SCUD LAYER BETWEEN 100 & 300 FT AGL. A COUPLE OF AIRCREWS REPORTED THAT SHORTLY AFTER TAKEOFF, THEIR WINDSPEEDS FOGGEDUP ON BOTH THE INSIDE & OUTSIDE, REDUCING THEIR FORWARD VISIBILITY. ADDITIONALLY, THE PLTS REPORTED DIFFICULTY MAINTAINING A VISIBLE HORIZON BELOW 300 FT AGL.

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

VISUAL/AURAL PERCEPTION..PILOT IN COMMAND

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

ALTITUDE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..HAZE/SMOKE


Contributing Factors

WINDOW,FLIGHT COMPARTMENT WINDOW/WINDSHIELD..DIRTY(FOGGY)


Contributing Factors

TERRAIN CONDITION..WATER,GLASSY


Contributing Factors

WEATHER CONDITION..FOG


Contributing Factors

WEATHER CONDITION..OBSCURATION

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