Aircraft Accident/Incident Report

Collinsville, California 94520
Saturday, January 4, 2003 15:32 PST

NTSB Narrative Summary Released at Completion of Accident

The helicopter was in normal cruise flight when it suddenly descended steeply into a shallow tidal marsh/swamp area. Two witnesses in a boat observed the helicopter flying about 500 feet above the terrain and water. One reported seeing it in normal straight and level flight while over the water. The witness described the engine sound as "tinny." The helicopter suddenly turned toward land, the engine sound became quiet, and it descended rapidly to the ground. The other witness reported that his attention was drawn to the helicopter when he heard a "pop" followed by a grinding noise. He noticed that the rotors were slowing down as the helicopter dropped while in a left-hand turn or rotation. Examination of the rotor blades revealed evidence of low rotor energy at impact. The engine was removed from the airframe, cleaned, and then installed on an instrumented test cell where it was test run for 50 minutes at various power levels according to a factory acceptance test protocol with no abnormalities detected. Continuity was established throughout the control system, the fuel delivery system, and the drive train to the main and tail rotors. On the day of the accident, the accident pilot's partner in the helicopter discussed an erratic fuel pressure issue with an aviation maintenance technician (AMT) at the FAA Approved Repair Station where the helicopter was parked and serviced. The discrepancy was not resolved at the time the pilot departed on the accident flight. There is no verified evidence that the pilot was aware of the discrepancy.

NTSB Probable Cause Narrative

A loss of engine power for undetermined reasons, and the pilot's failure to maintain main rotor rpm during the subsequent autorotation. A factor in the accident was the unsuitable nature of the terrain for a forced landing.

Event Information

Type of Event Accident
Event Date 1/4/2003
Event Day of the Week Saturday
Time of Event 1532
Event Time Zone Pacific Standard Time
Event City Collinsville
Event State CALIFORNIA
Event Country --
Zipcode of the event site 94520
Event Date Year 2003
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 380403N
Event Location Longitude 1215001W
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 Weather Observation Facility
Time of the weather observation 1455 Pacific Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID SUU
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 5000
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 2
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.26
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 18484
NTSB Notification Source FAA
NTSB Notification Date Jan 4 2003 12:00AM
NTSB Notification Time 1615
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 27 2005 6:51AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-SAC-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N98TH
NTSB Number LAX03FA060
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Schweizer
Aircraft Model 269C
Aircraft Series Identifier --
Aircraft Serial Number S1760
Certified Max Gross Weight 2050
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 1 2002 12:00AM
Airframe hours since last inspection 26
Airframe Hours 663
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Joseph Remcho
Aircraft Owner Street Address --
Aircraft Owner City Piedmont
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94611
Operator is an individual? No
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 None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code CCR
Departure City Concord
Departure State CA
Departure Country USA
Departure Time 1430
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code CCR
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Descent
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jul 28 2005 3:17PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --