FTW89FA133

NTSB accident investigation · Aerospatiale AS-350-D · Galveston, TX · July 11, 1989

Accident · FatalField investigationFinal report
Date
July 11, 1989, 14:52 local (19:52 UTC)
Place
Galveston, TX
Injuries
2 fatal
Phase of flight
Enroute
Aircraft
N3595BAerospatiale AS-350-DN1082HBell 206L-1
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 1992
Report
Approved by Office Director
Case key
22778

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Failure of both pilots to see-and-avoid the other aircraft (inadequate visual lookout).

Failure of both pilots to see-and-avoid the other aircraft (inadequate visual lookout).

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Midair collisionCruise
Visual lookout - inadequatePilot in commandCause
Visual lookout - inadequatePilot of other aircraftCause
In flight collision with terrain/waterDescent - uncontrolled
Midair collisionClimb - to cruise
Visual lookout - inadequatePilot in commandCause
Visual lookout - inadequatePilot of other aircraftCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

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.

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.

Aircraft · 2

Registration
N3595B
Reported as
Aerospatiale AS-350-D
Category
Helicopter
Serial number
1072
Airframe hours
6,874
Engine
Lycoming LTS-101, 615 horsepower, turbo shaft
Damage
Destroyed
Flight
Business · Part 91
Last inspection
AAIP · June 9, 1989 · 58 hours before
Departed
NONE · Mt 606, GM
Destination
SBI · Sabine Pass, TX
Flight plan
Company VFR
Airport
GLS · Scholes Fld

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Registration
N1082H
Reported as
Bell 206L-1
Category
Helicopter
Serial number
45403
Airframe hours
8,941
Engine
Allison 250-C28, 500 horsepower, turbo shaft
Damage
Destroyed
Flight
Part 135
Operator
Offshore Logistics, doing business as Air Logistics
Last inspection
AAIP · June 29, 1989 · 40 hours before
Departed
GLS · Galveston, TX
Destination
NONE · Hi 582, GM
Flight plan
Company VFR
Airport
GLS · Scholes Fld

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N3595B
Age
45
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Toxicology
Performed
Flight hours
2,710 total · 545 in this make and model · 2,657 as pilot in command · 131 in the last 90 days · 39 in the last 30 days · 2 in the last 24 hours
Role
Pilot, aircraft N1082H
Age
44
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Right
Toxicology
Performed
Flight hours
6,894 total · 4,862 in this make and model · 6,044 as pilot in command · 135 in the last 90 days · 17 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 11 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 77 °F
Altimeter
30.00 inHg
Observed at
GLS, 2 nm away

FAA reports on this event · 2

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.