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NTSB Report
July 11, 1989 · Aerospatiale AS-350-D · N3595B
Galveston, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 11, 1989
Injury Outcomes
2 injuries (2 fatalities)
Location
Galveston, TX
Aircraft
Aerospatiale AS-350-D
Tail Number
N3595B
Operator
Offshore Logistics
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW89FA133
AN AEROSPATIALE AS-350-D, N3595B, WAS IN CRUISE FLT & WAS TRANSITING THRU THE EDGE OF A CONTROL ZONE (NO TWR OPERG) AT 1200 FT MSL FROM SW TO NE, AFTER THE PLT HAD COMMUNICATED HIS POSITION/DIRECTION OF FLT ON UNICOM FREQ. ALSO, THE PLT OF BELL 206L-1, N1082H, HAD COMMUNICATED HIS DEPARTURE DIRECTION FROM THE COASTAL ARPT, AS HE WAS CLIMBING TO HIS CRUISE ALTITUDE ON A SOUTHEASTERLY HEADING. SUBSEQUENTLY, THE TWO HELICOPTERS CONVERGED & A MIDAIR COLLISION OCCURRED APRX 1.5 MI FROM THE COASTLINE OVER THE GULF OF MEXICO. BOTH HELICOPTERS DESCENDED UNCONTROLLED INTO THE GULF WATERS. THE AEROSPATIALE PILOT'S VISION WAS RESTRICTED DOWNWARD & LEFT BY THE COCKPIT CONSOLE. THE BELL PILOT'S VISION WAS RESTRICTED UPWARD & TO THE RIGHT BY THE DOOR FRAME. THE ANGLE BETWEEN THE FLT PATHS WAS ABOUT 105 DEGS.
NTSB Probable Cause
FAILURE OF BOTH PILOTS TO SEE-AND-AVOID THE OTHER AIRCRAFT (INADEQUATE VISUAL LOOKOUT).
Full Narrative
AN AEROSPATIALE AS-350-D, N3595B, WAS IN CRUISE FLT & WAS TRANSITING THRU THE EDGE OF A CONTROL ZONE (NO TWR OPERG) AT 1200 FT MSL FROM SW TO NE, AFTER THE PLT HAD COMMUNICATED HIS POSITION/DIRECTION OF FLT ON UNICOM FREQ. ALSO, THE PLT OF BELL 206L-1, N1082H, HAD COMMUNICATED HIS DEPARTURE DIRECTION FROM THE COASTAL ARPT, AS HE WAS CLIMBING TO HIS CRUISE ALTITUDE ON A SOUTHEASTERLY HEADING. SUBSEQUENTLY, THE TWO HELICOPTERS CONVERGED & A MIDAIR COLLISION OCCURRED APRX 1.5 MI FROM THE COASTLINE OVER THE GULF OF MEXICO. BOTH HELICOPTERS DESCENDED UNCONTROLLED INTO THE GULF WATERS. THE AEROSPATIALE PILOT'S VISION WAS RESTRICTED DOWNWARD & LEFT BY THE COCKPIT CONSOLE. THE BELL PILOT'S VISION WAS RESTRICTED UPWARD & TO THE RIGHT BY THE DOOR FRAME. THE ANGLE BETWEEN THE FLT PATHS WAS ABOUT 105 DEGS.
Flight
Event TypeAccident
Event Time14:52 CDT
Nearest AirportScholes Fld (0nm N)
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAerospatiale AS-350-D
Tail NumberN3595B
Aircraft CategoryHeli
DamageDestroyed
OperatorOffshore Logistics
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsLycoming · LTS-101 · Turboshaft · 615 | Allison · 250-C28 · Turboshaft · 500
Seats6
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 45 · Second Class
Crew 2Age 44 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 11 kt
Visibility15 sm
CeilingNone
Altimeter30.00 inHg
Observation Time19:50
Weather SourceWFAC