NTSB Identification: NYC88FA133.
The docket is stored on NTSB microfiche number 38627.
Accident occurred Sunday, May 01, 1988 in LONG ISLAND CTY, NY
Probable Cause Approval Date: 01/24/1990
Aircraft: BELL 206B, registration: N7094J
Injuries: 1 Fatal,4 Minor.

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 BELL 206B WAS ON A SIGHTSEEING FLIGHT AROUND THE ISLAND OF MANHATTAN WHEN IT EXPERIENCED A LOW ROTOR RPM SITUATION. THE PILOT SAID HE COULD NOT RECOVER ROTOR RPM AND MADE A FORCED LANDING IN THE EAST RIVER. THE PILOT AND THREE PASSENGERS EXITED THE AIRCRAFT AND HUNG ONTO THE FLOATS WHICH WERE INFLATED AND SEPARATED FROM THE AIRCRAFT. ONE PASSENGER DID NOT ESCAPE, WAS FOUND IN THE AIRCRAFT 1 1/2 HOURS LATER AND DIED OF DROWNING. A FATIGUE CRACK WAS FOUND ON THE POWER TURBINE GOVERNOR NEAR THE PY PORT WHICH WOULD CAUSE THE ENGINE TO LOSE POWER. THE PILOT AND PASSENGERS SAID A WARNING HORN IDENTIFIED AS THE LOW ROTOR WARNING HORN, STAYED ON THROUGHOUT THE DESCENT. THE LOW ROTOR RPM WARNING HORN IS DESIGNED TO SOUND WHEN A LOW ROTOR RPM CONDITION EXISTS. NO EVIDENCE OF ANY COLLECTIVE CONTROL PROBLEM WAS FOUND AND THE PILOT DID NOT MENTION A JAMMED COLLECTIVE.

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

TURBOSHAFT ENGINE,FREE TURBINE GOVERNOR..UNDERSPEED

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

COLLECTIVE..IMPROPER USE OF..PILOT IN COMMAND

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

AUTOROTATION..IMPROPER..PILOT IN COMMAND

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

TURBOSHAFT ENGINE,FREE TURBINE GOVERNOR..CRACKED

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

ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND

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