Aircraft Accident/Incident Report

Grand Isle Bl73
Sunday, January 5, 1986 8:03 CST

NTSB Narrative Summary Released at Completion of Accident

THE ACFT ROLLED OVER IN A HIGH X-WIND AFTER LANDING WHILE DEPLANING PASSENGERS. THE ACFT HAD LANDED ON A MOVING BARGE. A LANDING INTO THE WIND WAS BLOCKED BY A CRANE SO THE PLT SIDESLIPPED FROM A FLT PATH THAT PARALLELED THE SHIPS MOVEMENT. THE WIND WAS ACROSS THE BARGE FROM LEFT TO RIGHT. AFTER LANDING THE PLT DID NOT CHANGE THE X-WIND HEADING OF THE ACFT. ACCORDING TO A WITNESS THE ACFT WAS HEADING TOWARD THE RT SIDE OF THE VESSEL & THE WIND WAS FROM THE LEFT. THE PLT LEFT THE ENGS AT 'FLY' BECAUSE HE WAS UNSURE OF THE STABILITY OF THE POSITION BUT HE ALLOWED THE PASSENGERS TO DEPLANE. AS THE PASSENGERS DEPLANED WITNESSES SAID THE ACFT'S LEFT LANDING GEAR LIFTED SLIGHTLY OFF THE DECK. THIS REPORTEDLY HAPPENED 2 OR 3 TIMES BEFORE THE ACFT ROLLED OVER. THE PLT STATED THAT AS THE ROLL BEGAN HE APPLIED FULL LEFT CYCLIC WITH NO EFFECT. ONE WITNESS SAID THAT THERE WAS A STRONG GUST OF WIND AT THE TIME OF THE ROLL-OVER.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 1/5/1986
Event Day of the Week Sunday
Time of Event 803
Event Time Zone Central Standard Time
Event City GRAND ISLE BL73
Event State GULF OF MEXICO
Event Country --
Zipcode of the event site --
Event Date Year 1986
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 4
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 20
Variable Wind Indicator Unknown
Wind Speed (knots) 30
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 40
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 3
On Ground, Minor Injuries 0
On Ground, Serious Injuries 2
Injury Total Fatal 3
Injury Total Minor 1
Injury Total None --
Injury Total Serious 2
Injury Total All 6
Investigating Agency NTSB
NTSB Docket Number (internal use) 204
NTSB Notification Source --
NTSB Notification Date Jan 5 1986 12:00AM
NTSB Notification Time 1120
Fiche Number and/or location -used to find docket information 30293
Date of most recent change to record Nov 26 2002 4:48PM
User who most recently changed record NTSB\ZUZL
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7612L
NTSB Number FTW86LA032
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name SIKORSKY
Aircraft Model S-76A
Aircraft Series Identifier S-76A
Aircraft Serial Number 760054
Certified Max Gross Weight 7500
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 14
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 10 1985 12:00AM
Airframe hours since last inspection 70
Airframe Hours 4225
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AIR LOGISTICS
Aircraft Owner Street Address P.O. BOX 5C
Aircraft Owner City LAFAYETTE
Aircraft Owner State LA
Aircraft Owner Country
Aircraft Owner Zipcode 70505
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger/Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City AMELIA
Departure State LA
Departure Country
Departure Time 720
Departure Time Zone CST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Standing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 10 2001 2:56PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --