Aircraft Accident/Incident Report

Mt. Deborah, Alaska 99737
Sunday, August 15, 1993 12:30 AKD

NTSB Narrative Summary Released at Completion of Accident

DURING THE LANDING ROLL AT A REMOTE SITE THE RIGHT MAIN LANDING GEAR COLLAPSED AND THE RIGHT WING DRAGGED THE GROUND. EXAMINATION REVEALED THAT THE RIGHT MAIN LANDING GEAR LEG, PART NUMBER 250 040 451 1, FAILED AT THE UPPER WELD. FURTHER EXAMINATION REVEALED AN UNDOCUMENTED PREVIOUS REPAIR AT THE FAILED AREA. IT WAS FOUND THAT THE GEAR LEG METAL HAD BEEN IMPROPERLY HEAT TREATED FOLLOWING THAT REPAIR.

NTSB Probable Cause Narrative

FAILURE OF THE RIGHT MAIN LANDING GEAR LEG DUE TO THE IMPROPER MAJOR REPAIR PERFORMED ON THE GEAR LEG BY SOME UNKNOWN MAINTENANCE PERSON(S).

Event Information

Type of Event Accident
Event Date 8/15/1993
Event Day of the Week Sunday
Time of Event 1230
Event Time Zone --
Event City MT. DEBORAH
Event State ALASKA
Event Country --
Zipcode of the event site 99737
Event Date Year 1993
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
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 Day
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) 20
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 13
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Light
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) 897
NTSB Notification Source --
NTSB Notification Date Aug 18 1993 12:00AM
NTSB Notification Time 1530
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:33PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N42DC
NTSB Number ANC93LA154
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HELIO
Aircraft Model H-295
Aircraft Series Identifier H-295
Aircraft Serial Number 1454
Certified Max Gross Weight 3800
Aircraft Category Airplane
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 Jul 2 1993 12:00AM
Airframe hours since last inspection 93
Airframe Hours 2726
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BURSIEL, ROBERT P.
Aircraft Owner Street Address P. O. BOX 60142
Aircraft Owner City FAIRBANKS
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99706
Operator is an individual? --
Operator Name BURSIEL, ROBERT P.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P. O. BOX 60142
Operator City FAIRBANKS
Operator State AK
Operator Country
Operator Zip code 99706
Operator Code HYTA
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) Positioning
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1200
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
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 No
Medical Flight --