Aircraft Accident/Incident Report

Chickaloon, Alaska 99674
Saturday, August 9, 1997 11:00 AKD

NTSB Narrative Summary Released at Completion of Accident

As the tundra tire equipped airplane slowed to 25 knots during the landing roll on a gravel strip, the left main landing gear leg separated at the wheel attachment bolt holes. The airplane ground looped, and both wingtips were damaged. Metallurgical examination revealed multiple fatigue cracks originating from the bolt holes. The airplane had been used extensively for off-airport landings, both on wheels and skis. The failed gear leg had been inspected for cracks 806 flight hours and 16 months prior to the accident.

NTSB Probable Cause Narrative

inadequate maintenance inspection and failure of the left main landing gear attachment due to fatigue. A factor was continuous use of the airplane for rough area, off-airport landings.

Event Information

Type of Event Accident
Event Date 8/9/1997
Event Day of the Week Saturday
Time of Event 1100
Event Time Zone --
Event City CHICKALOON
Event State ALASKA
Event Country --
Zipcode of the event site 99674
Event Date Year 1997
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
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 10000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
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) 13
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
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) 1438
NTSB Notification Source --
NTSB Notification Date Aug 9 1997 12:00AM
NTSB Notification Time 1646
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:28PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5246E
NTSB Number ANC97LA120
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
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 185-03943
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Aug 4 1997 12:00AM
Airframe hours since last inspection 25
Airframe Hours 6243
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name TALKEETNA AIR TAXI, INC
Aircraft Owner Street Address PO BOX 73
Aircraft Owner City TALKEETNA
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99676
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 TL7C
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code TKA
Departure City TALKEETNA
Departure State AK
Departure Country
Departure Time 1030
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code
Destination City CHICKALOON RIVR
Destination State AK
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 --