Aircraft Accident/Incident Report

Ocotillo, California 92259
Thursday, June 30, 1983 12:05 PDT

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/30/1983
Event Day of the Week Thursday
Time of Event 1205
Event Time Zone Pacific Daylight Time
Event City OCOTILLO
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92259
Event Date Year 1983
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 30
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 225
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 17
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2882
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 23200
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1WA
NTSB Number LAX83LA312
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 133: Rotorcraft Ext. Load
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 204B
Aircraft Series Identifier 204B
Aircraft Serial Number 2065
Certified Max Gross Weight 8500
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 11
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 17 1983 12:00AM
Airframe hours since last inspection 10
Airframe Hours 9566
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name WRIGHT AIRLIFT INTERNATIONAL
Aircraft Owner Street Address 3501 LAKEWOOD BLVD.
Aircraft Owner City LONG BEACH
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 90808
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation External Load
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Other Work Use
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City JACUMBA
Departure State CA
Departure Country
Departure Time 1200
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --