Billings Logan Intnl Airport
Aircraft Accident/Incident Report

Billings, Montana 59101
Friday, August 21, 1992 15:50 MDT

NTSB Narrative Summary Released at Completion of Accident

UPON TOUCHDOWN THE AIRCRAFT'S LEFT MAIN LANDING GEAR SEPARATED. THE PILOT REPORTED THAT THE LANDING WAS NOT HARD AND WAS FREE OF SIDE LOADS. FAA EXAMINATION OF THE SEPARATED WHEEL ASSEMBLY FOLLOWING THE ACCIDENT REVEALED THAT THE LEFT MAIN LANDING GEAR AXLE HAD SEPARATED ALLOWING THE WHEEL TO DISENGAGE FOLLOWED BY THE SEPARATION OF THE STRUT. FURTHER EXAMINATION OF THE LEFT WHEEL AXLE REVEALED A PRE-EXISTING CRACK CONSISTENT WITH FATIGUE.

NTSB Probable Cause Narrative

FATIGUE OF THE LEFT MAIN LANDING GEAR AXLE.

Event Information

Type of Event Accident
Event Date 8/21/1992
Event Day of the Week Friday
Time of Event 1550
Event Time Zone Mountain Daylight Time
Event City BILLINGS
Event State MONTANA
Event Country --
Zipcode of the event site 59101
Event Date Year 1992
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport BILLINGS LOGAN INTNL
Event Location Nearest Airport ID BIL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport 90
Airport Elevation 3649
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1553 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID BIL
Elevation of weather observation facility 3649
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 10000
Lowest Non-Ceiling Height 6000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2588
NTSB Notification Source --
NTSB Notification Date Aug 21 1992 12:00AM
NTSB Notification Time 1534
Fiche Number and/or location -used to find docket information 47313
Date of most recent change to record Dec 11 2000 3:13PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N78BS
NTSB Number SEA92LA185
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 SCHAKNOWSKI
Aircraft Model DYKE DELTA JD-2
Aircraft Series Identifier DYKE DELTA
Aircraft Serial Number 1077
Certified Max Gross Weight 2100
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 25 1992 12:00AM
Airframe hours since last inspection 40
Airframe Hours 960
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SCHAKNOWSKI, BERNARD J.
Aircraft Owner Street Address 100 LOOKOUT CIRCLE
Aircraft Owner City SYRACUSE
Aircraft Owner State NY
Aircraft Owner Country
Aircraft Owner Zipcode 13209
Operator is an individual? --
Operator Name SCHAKNOWSKI, BERNARD J.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 100 LOOKOUT CIRCLE
Operator City SYRACUSE
Operator State NY
Operator Country
Operator Zip code 13209
Operator Code
Owner has at least one certificate None
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MSO
Departure City MISSOULA
Departure State MT
Departure Country
Departure Time 1230
Departure Time Zone MDT
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 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 7
Runway Length 5500
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --