Aircraft Accident/Incident Report

Mariposa, California 95338
Sunday, June 7, 1992 7:19 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT STARTED THE HELICOPTER'S ENGINES ON AN INTENDED FLIGHT PRIOR TO THE ACCIDENT FLIGHT. A FIREMAN SAW SPARKS COMING FROM THE RIGHT ENGINE AND NOTIFIED THE PILOT. IN HIS WRITTEN STATEMENT THE PILOT SAID HE SHUT THE ENGINES DOWN AND CANCELLED THE FLIGHT. A MEDICAL CREW MEMBER ABOARD THE HELICOPTER SAID HE SAW SPARKS COMING FROM THE ENGINE EXHAUST AND NOTICED THE ENGINE TEMPERATURE 'READING WELL ABOVE NORMAL.' HE ALSO SAID HE SAW THE ENGINE'S CHIP DETECTOR LIGHT ILLUMINATE. HE SAID THE PILOT 'PLAYED WITH THE THROTTLES A LITTLE BIT TO TRY TO GET THE TEMPERATURE UNDER CONTROL.' THE PILOT SHUT THE ENGINES DOWN AND THE NON-FLYING CREW MEMBERS RETURNED TO THEIR HOME BASE VIA GROUND TRANSPORTATION. THE NEXT MORNING THE PILOT ATTEMPTED TO FERRY THE AIRCRAFT WITH ONE ENGINE. THE PILOT STARTED THE RIGHT ENGINE AND PERFORMED A TAKEOFF WITH BOTH ENGINES RUNNING. AFTER TAKEOFF, THE RIGHT ENGINE'S TEMPERATURE ROSE AND THE PILOT SHUT THE ENGINE DOWN. THE HELICOPTER COULD NOT FLY ADEQUATELY WITH THE POWER FROM THE LEFT ENGINE AND ALTITUDE COULD NOT BE MAINTAINED. THE HELICOPTER COLLIDED WITH A TREE AND THEN THE GROUND. EXAMINATION OF THE RIGHT ENGINE REVEALED EXTENSIVE HEAT DAMAGE TO THE GAS PRODUCER TURBINE WHEEL WITH 20-30% DETERIORATION OF ALL BLADES.

NTSB Probable Cause Narrative

THE PILOT DECISION TO TAKEOFF AND FLY WITH A KNOWN DEFICIENCY IN ONE OF THE HELICOPTER'S ENGINES.

Event Information

Type of Event Accident
Event Date 6/7/1992
Event Day of the Week Sunday
Time of Event 719
Event Time Zone Pacific Daylight Time
Event City MARIPOSA
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95338
Event Date Year 1992
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
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) 5
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 2557
NTSB Notification Source --
NTSB Notification Date Jun 7 1992 12:00AM
NTSB Notification Time 840
Fiche Number and/or location -used to find docket information
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5007L
NTSB Number LAX92LA237
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 222
Aircraft Series Identifier 222
Aircraft Serial Number 47008
Certified Max Gross Weight 7579
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 4
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 25 1992 12:00AM
Airframe hours since last inspection 21
Airframe Hours 6453
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROGERS HELICOPTERS, INC.
Aircraft Owner Street Address P. O. BOX 4
Aircraft Owner City CLOVIS
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 93727
Operator is an individual? --
Operator Name ROGERS HELICOPTERS, INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P. O. BOX 4
Operator City CLOVIS
Operator State CA
Operator Country
Operator Zip code 93727
Operator Code CUCA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Ferry
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 715
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code FAT
Destination City FRESNO
Destination State CA
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --