Aircraft Accident/Incident Report

Oklahoma City, Oklahoma 73116
Sunday, August 27, 1995 18:49 CDT

NTSB Narrative Summary Released at Completion of Accident

AFTER LANDING THE EMS HELICOPTER AT THE ROOF TOP HELIPAD, THE PILOT WAS INFORMED THAT THE HOSPITALS' ELEVATOR WAS INOPERATIVE AND THE STAIRWAY WOULD NOT ACCOMMODATE THE INCUBATOR. FOLLOWING THE TAKEOFF, A LOSS OF ENGINE POWER OCCURRED, AND THE PILOT INITIATED AN AUTOROTATION. BELOW THE HELICOPTER WAS A FULL PARKING LOT, A STREET, AND TREES. THE PILOT FLARED THE HELICOPTER OVER THE TREES AND RECALLED LOWERING THE PITCH AND APPLYING FORWARD CYCLIC IN AN ATTEMPT TO REGAIN RPM AND AIRSPEED. THE HELICOPTER TOUCHED DOWN IN AN UNEVEN FIELD AND SKIDDED 30 YARDS BEFORE COMING TO REST. DAMAGE OCCURRED TO THE HORIZONTAL STABILIZER WINGLETS, MAIN ROTOR BLADES, REAR LANDING GEAR CROSSTUBE, AND THE TAILROTOR DRIVESHAFT COVER. THE COMPANY REPORTED A 'LOW SIDE GOVERNOR FAILURE' AS THE CAUSE OF THE POWER LOSS.

NTSB Probable Cause Narrative

THE FAILURE OF THE LOW SIDE OF THE TURBINE GOVERNOR. A FACTOR THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.

Event Information

Type of Event Accident
Event Date 8/27/1995
Event Day of the Week Sunday
Time of Event 1849
Event Time Zone Central Daylight Time
Event City OKLAHOMA CITY
Event State OKLAHOMA
Event Country --
Zipcode of the event site 73116
Event Date Year 1995
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Dusk
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 35
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1285
NTSB Notification Source --
NTSB Notification Date Aug 28 1995 12:00AM
NTSB Notification Time 1300
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 7 2000 4:30PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2070Z
NTSB Number FTW95LA368
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 206L-1
Aircraft Series Identifier 206L-1
Aircraft Serial Number 45730
Certified Max Gross Weight 4150
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 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Aug 23 1995 12:00AM
Airframe hours since last inspection 12
Airframe Hours 7953
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ST. LOUIS HELICOPTER AIRWAYS
Aircraft Owner Street Address P. O. BOX 809
Aircraft Owner City CHESTERFIELD
Aircraft Owner State MO
Aircraft Owner Country
Aircraft Owner Zipcode 63006
Operator is an individual? --
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 DFMA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City HUGO
Departure State OK
Departure Country
Departure Time 1728
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight Yes
Medical Flight Medical Emergency