LAX83LA312

NTSB accident investigation · Bell 204B · Ocotillo, CA · June 30, 1983

Accident · No injuriesLimited investigationFinal report
Date
June 30, 1983, 12:05 local (19:05 UTC)
Place
Ocotillo, CA
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N1WABell 204B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
23771

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.

Loss of engine powerHover
Reason for occurrence undeterminedCause
Forced landingLanding
Autorotation - performedPilot in command
Loss of control - in flightLanding - flare/touchdown
Object - other personFactor
Maneuver - performedPilot in command
Directional control - not possiblePilot in command
In flight collision with terrain/waterLanding - flare/touchdown
Weather condition - high density altitudeFactor
Terrain condition - rough/unevenFactor

Analysis

The acft was on an external load operation to airlift loads of cement. The cement was being poured for base pilings for power line towers on rough terrain. While carrying a 3100 lb load of cement on a 40 ft line, the helicopter had just moved to a position to start pouring. While stablized in a hover, the plt heard 3 compressor stalls. The helicopter yawed & began losing altitude. The plt moved the acft forward for the safety of workers below. The plt continued forward, released the external load, continued an autorotation into a ravine & landed on soft, uneven ground. Prior to touchdown, the helicopter began making uncontrollable turns. The main rotor struck a large boulder. Shortly after landing, a fire erupted in the eng compartment which subsequently cosumed the helicopter. An exam of the wreckage, including the eng, revealed no preimpact, mechanical problem. The pinion gear of the 90 deg gear box exhibited some backlash wear. The elevation of the crash site was aprx 3000 ft.

Aircraft

Registration
N1WA
Reported as
Bell 204B
Category
Helicopter
Serial number
2065
Airframe hours
9,566
Engine
Lycoming T53-13B, 1,300 horsepower, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Other work use · Part 133
Registered owner
Wright Airlift International
Airworthiness certificate
Standard, Transport
Last inspection
100 hour · June 17, 1983 · 10 hours before
Departed
Jacumba, CA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
37
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
4,800 total · 350 in this make and model · 200 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
225° at 12 knots, gusting 17
Visibility
20 statute miles
Lowest ceiling
None
Temperature
86 °F
Altimeter
29.00 inHg