Aircraft Accident/Incident Report

Stuart, Oklahoma 73108
Saturday, July 14, 2007 14:30 CDT

NTSB Narrative Summary Released at Completion of Accident

The helicopter experienced a loss of engine power while hovering out of ground effect while performing external load operations. While moving a heavy load , the helicopter's fuel light was reported to have flickered. The company's mechanic drained the tank, purged the fuel lines, and replaced the fuel filter. The helicopter was then filled with "clean fuel" and test flown for approximately 30-minutes; with no problems noted. After moving 2 or 3 more loads, and while repositioning the next load, the pilot "felt the engine surge slightly". All engine instruments appeared to be in the normal range and the pilot elected to continue to move the external load. The engine then "cut back to ground idle' and the helicopter descended through the trees. The engine was removed from the airframe, and shipped to an engine overhaul facility for further investigation. An initial examination of the engine did not reveal any pre-impact anomalies. The engine was placed in a test cell for a full run-up. Two engine starts were attempted; however, the engine failed to start. After the first attempt, the idling device strainer was found clogged and was replaced. The engine was disassembled after the second failed attempt and the examination revealed that the fuel tube was clogged, and fuel was not getting to the fuel injection wheel in the engine. Fuel samples taken at the accident scene and at the engine examination, failed to find containments in the fuel. A lab test of the substance that was found in the fuel tube, failed to identify the foreign substance.

NTSB Probable Cause Narrative

The loss of engine power due to a clogged fuel tube. A contributing factor was the lack of suitable terrain for the forced landing.

Event Information

Type of Event Accident
Event Date 7/14/2007
Event Day of the Week Saturday
Time of Event 1430
Event Time Zone Central Daylight Time
Event City Stuart
Event State OKLAHOMA
Event Country --
Zipcode of the event site 73108
Event Date Year 2007
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 345370N
Event Location Longitude 0960440W
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 1453 Central Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID MLC
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4200
Sky/Lowest/Cloud Conditions Scattered
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) 30
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.94
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) 22688
NTSB Notification Source Operator,
NTSB Notification Date Jul 14 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Dec 20 2007 6:59AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Oklahoma City, Oklahoma

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5770F
NTSB Number DFW07LA162
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 133: Rotorcraft Ext. Load
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Aerospatiale
Aircraft Model SA-315
Aircraft Series Identifier --
Aircraft Serial Number 2593
Certified Max Gross Weight 3500
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 Jul 1 2007 12:00AM
Airframe hours since last inspection --
Airframe Hours 12620
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Skydance Northwestern, Inc.
Aircraft Owner Street Address 101 Wass Way
Aircraft Owner City Minden
Aircraft Owner State NV
Aircraft Owner Country USA
Aircraft Owner Zipcode 89423
Operator is an individual? No
Operator Name SKYDANCE OPERATIONS INC
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 NCNL
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation External Load
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) External Load
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code --
Departure City Stuart
Departure State OK
Departure Country USA
Departure Time --
Departure Time Zone --
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Stuart
Destination State OK
Destination Country USA
Specific Phase of Flight Hover
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 20 2007 1:03PM
User who most recently changed record CASH
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 --