NTSB Identification: BFO85FA013.
The docket is stored on NTSB microfiche number 28505.
Accident occurred Thursday, January 17, 1985 in WASHINGTON, DC
Aircraft: AEROSPATIALE SA 360C, registration: N42CP
Injuries: 2 Minor,2 Uninjured.

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 FLT CREW RPRTD THE ENG LOST PWR WHEN THE HELICOPTER WAS AT APRX 100' WITH A FWD SPEED OF 50 KTS. WITNESSES OBSERVED FAINT GRAY/WHITE SMOKE EMANATING FROM THE VICINITY OF THE TAILPIPE SHORTLY AFTER LIFT OFF WHICH TRAILED & BECAME PROFUSEIMMEDIATELY BEFORE THE HELICOPTER BEGAN DSCNDG. SUBSEQUENTLY THE ACFT IMPACTED THE GND IN A LEVEL, RGT YAW ATTITUDE. THE RGT MAIN GEAR COLLAPSED & FOLDED UNDER THE BELLY, THE FUEL CELLS RUPTURED & THE TAIL CONE SEPARATED FROM THE CABIN. AN EXAM REVEALED THAT A MIXTURE OF FUEL & OIL HAD VENTED OVERBOARD THRU THE FLEXIBOX SEAL DRAIN LINE. ALTHO THE ACFT HAD RECENTLY BEEN WASHED, A HVY FUEL STAIN WAS NOTED ON THE UNDERSIDE OF THE HELICOPTER FROM THE GANG DRAIN TO THE FENESTRON. THERE WAS EVIDENCE THAT FUEL & OIL HAD LEAKED FROM THE JET HOLDER WHICH TRANSFERRED FUEL FROM A LINEAR LINE TO A ROTATING LINE. HOWEVER, AN EXAM OF THE FUEL (FLEXIBOX) & OIL (SEALOL) SEALS SHOWED NO IRREGULARITIES. THE CONDITION COULD NOT BE DUPLICATED DURING BENCH TESTING.

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

FUEL SYSTEM..UNDETERMINED

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

FLUID,FUEL..LEAK

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

FLUID,FUEL..DUMPED

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

FLUID,FUEL..STARVATION




Contributing Factors

LUBRICATING SYSTEM,OIL SEAL..LEAK


Contributing Factors

FLUID,OIL..LEAK

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