Aircraft Accident/Incident Report

Pasadena, California 91001
Friday, December 7, 2012 9:30 PST

NTSB Narrative Summary Released at Completion of Accident

Prior to the flight, the doors were removed in order to make it easier for the passengers to board and exit the helicopter. During the safety briefing, the pilot took a headset from a pouch in the rear of the helicopter, demonstrated how to wear the headsets, and then replaced it. The pilot did not tell the passengers that the headsets needed to be replaced in the pouch after landing and before exiting the helicopter. Additionally, the pilot did not make the passengers aware of the danger associated with loose headsets in the back of the helicopter in a doors-off configuration. After the two passengers were transported to a work site location, the right rear passenger exited the helicopter and placed the headset on the hook located behind the front seats. After departing the site, about 3 to 5 minutes later while en route at an elevation of about 1,000 feet above ground level, the pilot felt something strike the helicopter. After landing and upon inspecting the helicopter, the pilot discovered that the right rear headset was missing and that the leading edge of the tail rotor had been damaged. Upon further inspection of the helicopter, the operator reported that the tail rotor drive shaft was found to be slightly egg shaped at its aft end.

NTSB Probable Cause Narrative

An unsecured headset, which struck the leading edge of a tail rotor blade. Contributing to the accident was the pilot’s inadequate safety briefing.

Event Information

Type of Event Accident
Event Date 12/7/2012
Event Day of the Week Friday
Time of Event 930
Event Time Zone Pacific Standard Time
Event City Pasadena
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91001
Event Date Year 2012
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 341330N
Event Location Longitude 1180609W
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 Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 11
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 15
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) 30.09
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 30988
NTSB Notification Source Southern California Edison Chi
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 4 2013 10:36AM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N818CE
NTSB Number WPR13CA071
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 369
Aircraft Series Identifier D
Aircraft Serial Number 610983D
Certified Max Gross Weight 3000
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 AAIP
Date of Last Inspection May 16 2012 12:00AM
Airframe hours since last inspection 92
Airframe Hours 11784
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Southern California Edison Co.
Aircraft Owner Street Address --
Aircraft Owner City San Bernardino
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 91761
Operator is an individual? No
Operator Name Southern California Edison Co.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City San Bernardino
Operator State CA
Operator Country USA
Operator Zip code 91761
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) Other Work Use
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 27CN
Departure City Valencia
Departure State CA
Departure Country USA
Departure Time 645
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 27CN
Destination City Valencia
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 16 2013 1:19PM
User who most recently changed record stam
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 --