Aircraft Accident/Incident Report

Ely, Nevada 89315
Tuesady, January 23, 2001 7:45 PST

NTSB Narrative Summary Released at Completion of Accident

The single engine helicopter experienced a loss of engine power after the oil was inadvertently pumped overboard. A company mechanic replaced the torque gauge prior to the accident flight due to needle "bounce." The mechanic bled the torque system and reinstalled a radio that was removed to facilitate the work. During the radio installation, he inadvertently engaged the bleed valve, which is located behind the instrument panel, allowing oil to flow out of the engine from behind the instrument panel. While at 9,500 feet, the engine lost power and the pilot performed an autorotation landing to a field at the base of mountains. The pilot said he touched down smooth and light; however, the main rotor blades flexed and severed the tail boom. As a result of the accident, the operator rerouted the torque system bleed line toward the pilot's feet so that they could detect an inadvertent oil leak.

NTSB Probable Cause Narrative

The mechanic's inadvertent activation of the bleed valve, which resulted in a loss of engine oil and loss of engine power while in cruise flight.

Event Information

Type of Event Accident
Event Date 1/23/2001
Event Day of the Week Tuesday
Time of Event 745
Event Time Zone Pacific Standard Time
Event City Ely
Event State NEVADA
Event Country --
Zipcode of the event site 89315
Event Date Year 2001
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 391700N
Event Location Longitude 1134200W
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 7500
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 753 Pacific Standard Time
Direction of event from weather observation facility (degrees) 330
Weather Observation Facility ID Ely
Elevation of weather observation facility 6259
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation PST
Lighting Conditions Day
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) -8
Dew Point at event time (in degress fahrenheit) -9
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.17
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 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 15188
NTSB Notification Source FAA
NTSB Notification Date Jan 23 2001 12:00AM
NTSB Notification Time 820
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2004 8:14AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-RNO-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8353F
NTSB Number LAX01LA079
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Hughes
Aircraft Model 369D
Aircraft Series Identifier --
Aircraft Serial Number 1260062D
Certified Max Gross Weight 3000
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 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jan 2 2001 12:00AM
Airframe hours since last inspection 47.5
Airframe Hours 11037.7
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Hawkins and Powers Aviation, Inc.
Aircraft Owner Street Address P.O. Box 391
Aircraft Owner City Greybull
Aircraft Owner State WY
Aircraft Owner Country USA
Aircraft Owner Zipcode 82426
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 BZBA
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) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code ELY
Departure City Ely
Departure State NV
Departure Country USA
Departure Time 730
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City Ely
Destination State NV
Destination Country USA
Specific Phase of Flight Approach
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jan 26 2004 4:24PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --