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NTSB Report
January 5, 1986 · Sikorsky S-76A · N7612L
Grand Isle Bl73
Overview
Report Status
Preliminary report
Event Type
Accident
Date
January 5, 1986
Injury Outcomes
1 injury (1 minor injury), 5 unknown outcomes
Location
Grand Isle Bl73
Aircraft
Sikorsky S-76A
Tail Number
N7612L
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW86LA032
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time14:03 UTC
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSikorsky S-76A
Tail NumberN7612L
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 135
Engines2
Engine TypeTurboshaft
Engine DetailsAllison · 250-C30S · Turboshaft · 317
Seats14
People & Injuries
Injury Summary1 injury (1 minor injury), 5 unknown outcomes
Fatal0
Serious0
Minor1
Uninjured0
Total6
Crew 1Age 37 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind20° @ 30 kt, gusting 40 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point39 C / 0 C
Altimeter0
Weather SourcePILO