NTSB Identification: FTW85LA111.
The docket is stored on NTSB microfiche number 27707.
Accident occurred Monday, February 04, 1985 in SABINE PASS, TX
Aircraft: AEROSPATIALE AS 355F-1, registration: N5796A
Injuries: 1 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.

WHILE EN ROUTE AT AN ALT OF 500 TO 700 FT, THE #1 ENG SPOOLED DOWN. THE PLT SECURED THE #1 ENG & TURNED BACK TOWARD THE HELIPORT TO MAKE A SINGLE ENG LANDING. HOWEVER, HE COULD NOT MAINTAIN LEVEL FLT & THE ROTOR RPM BEGAN DROPPING. THE PLT NOTED THAT THE #2 ENG HAD HI TEMP (ABOVE 900 DEGS) & LOW TORQUE. SUBSEQUENTLY, HE INFLATED THE POPOUT FLOATS & MADE A PARTIAL POWER LANDING IN A MARSH. DUE TO LOW ROTOR RPM, THE HELICOPTER TOUCHED DOWN HARD & WAS DAMAGED. THE #1 ENG WAS REMOVED & CHECKED IN A TEST CELL & IT OPERATED NORMALLY. THE #2 ENG WAS DAMAGED; HOWEVER, IT'S FUEL MANAGEMENT SYS CHECKED NORMAL. THE ACFT WAS BEING FLOWN IN RAIN SHOWERS WITHOUT USING THE ENG ANTI-ICE. OPERATOR PERSONNEL SUSPECTED THAT INLET ICING CAUSED THE #1 ENG TO FLAME OUT & THE #2 ENG TO LOSE PARTIAL POWER. A WITNESS ESTIMATED THE SURFACE AIR TEMP WAS 33 DEGS.

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

PLANNING/DECISION..IMPROPER..PILOT IN COMMAND




Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN


Contributing Factors

TERRAIN CONDITION..WET


Contributing Factors

WEATHER CONDITION..RAIN


Contributing Factors

WEATHER CONDITION..ICING CONDITIONS


Contributing Factors

ANTI-ICE/DEICE SYSTEM..NOT USED..PILOT IN COMMAND

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