Aircraft Accident/Incident Report

Tok, Alaska 99780
Tuesady, May 4, 1982 16:00 AST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT WAS CONDUCTING A NON-REVENUE, SLING-LOAD OPERATION ON MT NEUBERER, WHILE DONATING HIS SERVICES TO TOK COMMUNITY TV, INC. HE STATED THAT HE WAS LIFTING THREE EMPTY PROPANE BOTTLES FROM A SNOW FIELD WHEN HE NOTICED THE AUTO RELIGHT LAMP FLASH. HE STATED THAT ALMOST IMMEDIATELY, THE ENGINE-OUT LIGHT AND HORN ACTIVATED AND THE LOAD MAY HAVE CONTACTED THE GROUND. THE HELICOPTER BEGAN TO ACCELERATE FORWARD DESPITE HIS AFT CYCLIC CONTROL INPUT. HE STATED THAT HE PUSHED THE ELECTRIC SLING RELEASE SWITCH. HOWEVER, THE HELICOPTER CONTINUED TO ACCELERATE FORWARD AND DOWN. IT HIT THE GROUND IN A VERTICLE NOSE DOWN ATTITUDE WHILE HE WAS APPLYING ALMOST FULL AFT CYCLIC. THE ELEVATION WAS ABOUT 5800 FT. THE ELECTRIC SLING LOAD LATCH WAS FOUND IN THE CLOSED POSITION. THE ENGINE WAS REMOVED AND CHECKED ON A TEST STAND. SEVERAL HUNG STARTS OCCURRED AT 45 TO 50% UNTIL A SLIGHT ADJUSTMENT WAS MADE TO INCREASE FUEL FLOW, THEN THE ENGINE OPERATED WELL, BUT ABOUT 5% BELOW MAX POWER. PILOT LACKED FAA APPROVAL, EXT LOAD OPN

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 5/4/1982
Event Day of the Week Tuesday
Time of Event 1600
Event Time Zone Atlantic Standard Time
Event City TOK
Event State ALASKA
Event Country --
Zipcode of the event site 99780
Event Date Year 1982
Event Date Month 5
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 0
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
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 Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Unknown
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) 3
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 20
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1335
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9239F
NTSB Number ANC82DA039
Missing Aircraft Indicator N
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 369HS
Aircraft Series Identifier 369HS
Aircraft Serial Number 350723S
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class Unknown
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 44
Airframe Hours 239
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RONALD M. & LINDA S. WARBELOW
Aircraft Owner Street Address P.O. BOX 401
Aircraft Owner City TOK
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99780
Operator is an individual? --
Operator Name RONALD M. & LINDA S. WARBELOW
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O. BOX 401
Operator City TOK
Operator State AK
Operator Country
Operator Zip code 99780
Operator Code
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code C
Departure City MT. NEUBERGER
Departure State AK
Departure Country
Departure Time 142
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code C
Destination City TANACROSS
Destination State AK
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 18 2002 4:50PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --