Individually Owned: 150,657
Corporate Owned: 137,281
Baker City Municipal Airport
Aircraft Accident/Incident Report
Baker City, Oregon 97814
Wednesday, June 25, 2008 16:00 PDT
NTSB Narrative Summary Released at Completion of Accident
The airplane sustained substantial damage following a right main landing gear collapse on its first landing after a 150-hour maintenance inspection. The collapse was due to a fracture and separation of the right main landing gear's housing boss from the inboard hydraulic cylinder clevis. The 150-hour inspection included the installation of a new clevis on the right main landing gear's inboard hydraulic actuator. A postaccident examination by a Federal Aviation Administration inspector revealed that the inboard hydraulic rod bearing attach bolt was screwed all the way in, which was contrary to instructions specified in the maintenance manual. While the manual states that the attach bolt should be backed off three complete turns in order to maintain proper rigging, the manufacturer reported that improper preload adjustment of the right main landing gear actuator cylinder could not create a large enough force to induce the failure of the right main landing gear outer body boss and clevis fitting. A metallurgical examination of the inboard hydraulic cylinder clevis and associated clevis pin housing boss showed that the housing boss had fractured from the main body of the strut and that the fracture was consistent with overstress. There was no evidence of wear or fatigue cracking on either the clevis or the housing boss. The postaccident examination of the airplane, the landing gear system, and its associated components failed to reveal the initiating event that subsequently resulted in the overstress failure and landing gear collapse.
NTSB Probable Cause Narrative
The landing gear collapse during the landing roll due to the fracture of the inboard hydraulic cylinder clevis pin housing boss for undetermined reasons.
Event Information
| Type of Event | Accident |
| Event Date | 6/25/2008 |
| Event Day of the Week | Wednesday |
| Time of Event | 1600 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Baker City |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97814 |
| Event Date Year | 2008 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 445014N |
| Event Location Longitude | 1174833W |
| Event Location Airport | Baker City Municipal Airport |
| Event Location Nearest Airport ID | BKE |
| 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 | 3373 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1653 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | BKE |
| Elevation of weather observation facility | 3373 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 24 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | 340 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.08 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 26587 |
| NTSB Notification Source | Regional Operations Center |
| NTSB Notification Date | Jun 24 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Feb 9 2010 7:31PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Boise, Idaho |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9KG |
| NTSB Number | SEA08LA157 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | ROCKWELL |
| Aircraft Model | 690B |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 11426 |
| Certified Max Gross Weight | 10325 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 7 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 24 2008 12:00AM |
| Airframe hours since last inspection | 1 |
| Airframe Hours | 5509 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Catlan CD LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | North Powder |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97867 |
| Operator is an individual? | No |
| Operator Name | Eric Owen |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Baker City |
| Operator State | OR |
| Operator Country | USA |
| Operator Zip code | 97814 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | -- |
| 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 | HIO |
| Departure City | Hillsboro |
| Departure State | OR |
| Departure Country | USA |
| Departure Time | 1500 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | BKE |
| Destination City | Baker City |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 9 2010 7:33PM |
| User who most recently changed record | stam |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 31 |
| Runway Length | 5095 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |