Aircraft Accident/Incident Report

San Clemente, California 92674
Thursday, February 19, 2009 19:30 PST

NTSB Narrative Summary Released at Completion of Accident

During cruise flight the helicopter experienced a loss of engine power. The pilot performed an autorotation, maneuvering the helicopter to avoid obstacles. The helicopter sustained substantial damage after landing hard, semi-submerged in the surf zone of a beach. During the landing sequence, a main rotor blade made contact with the tail boom and the helicopter sustained crush damage to the lower fuselage. Post accident examination of the airframe did not reveal evidence of any failure or malfunction. Examination of the engine revealed a failure of the number two bearing, resulting in a subsequent failure of the engine’s gas generator and power turbine sections. Examination of the bearing revealed signatures consistent with the inner and outer bearing races experiencing misalignment. The misalignment resulted in the associated balls becoming mechanically locked against the ball cage, leading to raceway compromise, heat damage, and bearing failure. As a result of this accident, and other in-service wear issues related to the number two bearing, the engine manufacturer has embarked on a bearing redesign process for this engine series.

NTSB Probable Cause Narrative

Failure of the engine’s number two bearing during cruise flight, which resulted in a loss of engine power.

Event Information

Type of Event Accident
Event Date 2/19/2009
Event Day of the Week Thursday
Time of Event 1930
Event Time Zone Pacific Standard Time
Event City San Clemente
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92674
Event Date Year 2009
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 322207N
Event Location Longitude 1173317W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1956 Pacific Standard Time
Direction of event from weather observation facility (degrees) 110
Weather Observation Facility ID KNFG
Elevation of weather observation facility 78
Distance of event from weather observation facility (units?) 13
Time Zone of the weather observation PST
Lighting Conditions Night
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 12
Dew Point at event time (in degress fahrenheit) -5
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.11
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious 2
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 26560
NTSB Notification Source FAA ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Feb 1 2010 5:12PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N608BP
NTSB Number WPR09GA119
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed Company VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name MCDONNELL DOUGLAS HELICOPTER
Aircraft Model 600
Aircraft Series Identifier N
Aircraft Serial Number RN037
Certified Max Gross Weight 4100
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Oct 14 2008 12:00AM
Airframe hours since last inspection 74
Airframe Hours 3571
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91-A
Aircraft Owner Name Department Of Homeland Security
Aircraft Owner Street Address 1300 Pennsylvania Ave NW RM 6.4A
Aircraft Owner City Washington
Aircraft Owner State DC
Aircraft Owner Country USA
Aircraft Owner Zipcode 20229-0002
Operator is an individual? No
Operator Name United States Customs and Border Protection
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City El Paso
Operator State TX
Operator Country USA
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code LGB
Departure City Long Beach
Departure State CA
Departure Country USA
Departure Time 1900
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code SDM
Destination City San Diego
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 12 2010 3:45PM
User who most recently changed record grol
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --