FTW86FA033

NTSB accident investigation · Bell 206B · Port O'Connor, TX · January 7, 1986

Accident · Minor injuriesField investigationFinal report
Date
January 7, 1986, 16:35 local (22:35 UTC)
Place
Port O'Connor, TX
Injuries
1 minor
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N520EHBell 206B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860107000309A
Case key
21885

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

On this page

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.

Airframe/component/system failure/malfunctionTakeoff
Rotor drive system,tail rotor drive shaft - separationCause
Reason for occurrence undeterminedCause
Loss of control - in flightHover
In flight collision with objectDescent - uncontrolled
Object - aircraft parked/standing
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - dirt bank/rising embankment

Analysis

The helicopter sustained a loss of tailrotor drive on lift off. A bonding in a shaft coupling failed. Extensive research and analysis discovered no discrepancies in design, production, quality assurance, maintenance or operating environment that could have resulted in this failure. Only one previous occurrence was documented, in an assembly from another vendor.

Aircraft

Registration
N520EH
Reported as
Bell 206B
Category
Helicopter
Serial number
3020
Airframe hours
4,594
Engine
Allison 250-C20B, 420 horsepower, turbo shaft
Damage
Destroyed
Flight
Positioning · Part 91
Registered owner
Era Helicopters Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · January 3, 1986 · 9 hours before
Destination
Offshore Rig, GM
Flight plan
Company VFR
Airport
2TA5 · Era Heliport

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
40
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
2,136 total · 603 in this make and model · 1,751 as pilot in command · 204 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 20 knots, gusting 5
Visibility
5 statute miles
Lowest ceiling
600 ft overcast
Temperature
75 °F

FAA reports on this event · 1

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