LAX86LA155

NTSB accident investigation · Bell 206B · Huntington Bch, CA · March 23, 1986

Accident · No injuriesLimited investigationFinal report
Date
March 22, 1986, 19:00 local (Mar 23, 1986, 03:00 UTC)
Place
Huntington Bch, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N49643Bell 206B
Weather
Visual (VMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19860322010849A
Case key
25104

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.

Loss of engine power(total) - mech failure/malfTakeoff - initial climb
Reason for occurrence undeterminedCause
Forced landingTakeoff - initial climb
Autorotation - performedPilot in commandFactor
In flight collision with terrain/waterLanding - flare/touchdown
Light condition - dark nightFactor
Rotor rpm - reducedPilot in commandCause
Terrain condition - dirt bank/rising embankmentFactor

Analysis

A bell 206B collided with a berm after an eng failure while departing a helipad. The plt indicated he had just departed the helipad at night and at aprx 50 ft AGL the eng failed. The acft vertical fin hit the berm causing the tail boom to bend aft of the horizontal stabilizer into the path of the main rotor. The main rotor severed the tail boom. The acft rotated 90 deg and came to rest upright without further damaged. A tear down inspection of the eng was conducted. There was no indication of material failure or mechanical malfunction. There was fuel found in the fuel control and fuel pump. Exam of the fuel pump filter and high pressure fuel filter revealed no contaminants or water in the system. The fuel pump, governor, and fuel control were examined and bench tested in accordance with manufacturers instructions. All three components met manufacturers performance criteria.

Aircraft

Registration
N49643
Reported as
Bell 206B
Category
Helicopter
Serial number
1813
Airframe hours
10,829
Engine
Allison 250 C-20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Aspen Helicopter, Inc.
Registered owner
Rotor Dynamics
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · January 22, 1986 · 60 hours before
Departed
20L · Huntington Bch, CA
Destination
18L · Platform Emmy, CA
Flight plan
Company VFR
Airport
20L · Heliport Aminoil USA Inc.

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
48
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
4,084 total · 552 in this make and model · 3,754 as pilot in command · 116 in the last 90 days · 34 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
290° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 52 °F
Observed at
LGB, 12 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.

Other investigations on N49643 · 1

Matched to the same aircraft by N-number and date.