Sigley's Pvt Airstrip Airport
Aircraft Accident/Incident Report

Bulchitna Lake, Alaska 99667
Friday, May 28, 1993 17:15 AKD

NTSB Narrative Summary Released at Completion of Accident

THE PILOT-IN-COMMAND STATED HE EXPERIENCED A MODERATELY HARD LANDING AND THE RIGHT MAIN WHEEL SEPARATED FROM THE LANDING GEAR AT THE UPPER BOLT HOLES WHICH NORMALLY SECURE THE AXLE TO THE LANDING GEAR LEG. METALLURGICAL EXAMINATION OF THE GEAR LEG SHOWED THAT THE FAILURE STEMMED FROM AREA OF FATIGUE CRACKING THAT INITIATED FROM CROSSION PITTING IN THE BOLT HOLES AND EXTERIOR SURFACES OF THE LOWER PORTION OF THE GEAR LEG.

NTSB Probable Cause Narrative

THE FAILURE OF THE LANDING GEAR LEG DUE TO A FATIGUE FRACTURE CAUSED BY CORROSION.

Event Information

Type of Event Accident
Event Date 5/28/1993
Event Day of the Week Friday
Time of Event 1715
Event Time Zone --
Event City BULCHITNA LAKE
Event State ALASKA
Event Country --
Zipcode of the event site 99667
Event Date Year 1993
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SIGLEY'S PVT AIRSTRIP
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
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) 70
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Unknown
Wind Speed (knots) 0
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1158
NTSB Notification Source --
NTSB Notification Date May 28 1993 12:00AM
NTSB Notification Time 1843
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:17PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N80124
NTSB Number ANC93LA071
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 CESSNA
Aircraft Model 185
Aircraft Series Identifier 185
Aircraft Serial Number 18503094
Certified Max Gross Weight 3350
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 Annual
Date of Last Inspection Feb 19 1993 12:00AM
Airframe hours since last inspection 65
Airframe Hours 5826
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name WHITE, CARL H.
Aircraft Owner Street Address P. O. BOX 412
Aircraft Owner City KENAI
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99611
Operator is an individual? --
Operator Name WHITE, CARL H.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 412
Operator City KENAI
Operator State AK
Operator Country
Operator Zip code 99611
Operator Code WNBC
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code ENA
Departure City KENAI
Departure State AK
Departure Country
Departure Time 1700
Departure Time Zone ADT
Destination Same as Local Flt crash at destination city
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 36
Runway Length 1100
Runway Width 30
Sight Seeing flight No
Air Medical Flight No
Medical Flight --