Aircraft Accident/Incident Report

Nr Gatlinburg, Tennessee 37738
Tuesady, July 26, 1983 16:45 EDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT REPORTED THAT HE WAS BEGINNING HIS APCH TO A LANDING SITE AT AN ELEVATION OF 5200 FT WHEN HE FELT A BUMP IN THE TAIL ROTOR PEDALS. THE HELICOPTER BEGUN TO SPIN TO THE RIGHT & THE PLT FOUND HE HAS NO TAIL ROTOR CONTROL. AN AUTOROTATIVE LANDING WAS MADE INTO THE TREETOPS WHICH HE ESTIMATED TO BE 125 FT ABOVE THE MOUNTAIN TERRAIN. REPORTEDLY, THE MAIN ROTOR MAST SEPARATED AFTER CONTACTING THE TREES & THE HELICOPTER ROLLED INVERTED & STRUCK THE GROUND IN A NOSE LOW ATTITUDE. A SMALL POSTCRASH FIRE WAS EXTINGUISHED BY A PORTABLE FIRE EXTINGUISHER FROM THE HELICOPTER. BEFORE CRASHING, THE HELICOPTER WAS BEING USED ON AN EXTERNAL LOAD OPERATION. AN INVESTIGATION REVEALED THAT IT WAS CARRYING A 30 GAL BUCKET THAT HAD BEEN LOOSELY FILLED WITH FABIC STRAP. WITNESSES REPORTED THE ACFT WAS DESCEND AT APRX 40 KTS WHEN THEY OBSERVED 1 OR MORE OF THE STRAPS TRAILING FROM THE BUCKET. SUBSEQUENTLY, A STRAP BECOME ENTANGLED IN THE TAIL ROTOR & IT WAS OBSERVED TO HAVE STOPPED ROTATING.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/26/1983
Event Day of the Week Tuesday
Time of Event 1645
Event Time Zone Eastern Daylight Time
Event City NR GATLINBURG
Event State TENNESSEE
Event Country --
Zipcode of the event site 37738
Event Date Year 1983
Event Date Month 7
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1652 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 310
Weather Observation Facility ID TYS
Elevation of weather observation facility 981
Distance of event from weather observation facility (units?) 28
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 948
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 21155
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5733M
NTSB Number ATL83LA294
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 133: Rotorcraft Ext. Load
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 206B
Aircraft Series Identifier 206B
Aircraft Serial Number 2992
Certified Max Gross Weight 3600
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 2350
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name VERTIFLITE AIR SERVICES
Aircraft Owner Street Address ROUTE 2, BOX 91
Aircraft Owner City MARYVILLE
Aircraft Owner State TN
Aircraft Owner Country
Aircraft Owner Zipcode 37801
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
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation External Load
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Other Work Use
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City MT. LECONTE
Departure State TN
Departure Country
Departure Time 1635
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code
Destination City INDIAN GAP
Destination State TN
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 No
Medical Flight --