LAX85FA036

NTSB accident investigation · Bell 206B · Beaumont, CA · October 31, 1984

Accident · FatalField investigationFinal report
Date
October 30, 1984, 23:41 local (Oct 31, 1984, 07:41 UTC)
Place
Beaumont, CA
Injuries
2 fatal, 1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N20DBBell 206B
Weather
Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19841030073329A
Case key
24431

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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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.

In flight collision with objectCruise
Weather condition - fogFactor
Weather condition - haze/smokeFactor
Preflight briefing service - not obtainedPilot in command
Light condition - dark nightFactor
In-flight planning/decision - improperPilot in command
Pressure induced by othersPilot in command
Visual lookout - not maintainedPilot in commandCause
Proper altitude - not maintainedPilot in commandCause
Object - wire,transmission
Object - guy wire
Loss of control - in flightCruise
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

Approximately one min before the accident the pilot contacted the tower at norton air force base for clearance through their traffic area. He reported initially that he was at 300 ft AGL. Seconds later he transmitted that he was at 100 ft over the freeway. The request was approved at or below 2700 ft MSL while in the control zone. The helicopter first contacted wires at 100 ft AGL. It then descended into a second wire at 80 ft and a guy wire at 60 ft. elevation at the sight was 2,400 ft MSL. The site was about 11 miles east of norton air force base in uncontrolled airspace. Wx at norton was sky partly obscured, visibility 1.5 miles in fog. Shortly after takeoff, at the request of the front seat passenger the pilots planned route of flight was changed. The pilot stated that he was aware of wires in the area and had slowed to 60 KTS and turned the landing light on in order to maintain his visual lookout.

Aircraft

Registration
N20DB
Reported as
Bell 206B
Category
Helicopter
Serial number
937
Airframe hours
3,580
Engine
Allison 250-C20, 317 horsepower, turbo shaft
Damage
Destroyed
Flight
Business · Part 91
Registered owner
Offshore Logistics, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · August 13, 1984 · 77 hours before
Departed
Banning, CA
Destination
SNA · Santa Ana, CA

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
4,625 total · 193 in this make and model · 81 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Night/dark
Wind
Calm
Visibility
1 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 52 °F
Altimeter
29.00 inHg
Observed at
SBD, 13 nm away

FAA reports on this event · 1

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