Individually Owned: 150,657
Corporate Owned: 137,281
St. Louis/Downtown Airport
Aircraft Accident/Incident Report
Cahokia, Illinois 62206
Wednesday, January 23, 2008 10:15 CST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that while landing, during the post maintenance test flight, he felt "a falling motion to the back right." He aborted the landing and flew by the control tower for a landing gear check. He was informed the landing gear appeared down. He then returned to his departure airport and while landing there he felt the right wing drop closer to the ground than normal. He aborted the landing again and began to troubleshoot the landing gear system. The pilot flew by the air traffic control tower two more times and performed the Emergency Gear Extension checklist. The pilot then used the Gear-Up Landing emergency checklist and landed the airplane. During the landing roll the right main gear collapsed and the right wing contacted the runway. As a result, the right wing and aileron were substantially damaged. The pilot reported that he had received a gear down and locked indication every time he extended the landing gear during the flight. The post accident inspection of the landing gear revealed that it could be released from the down and locked position by pushing on it with hand pressure. The leg brace portion of the landing gear retract brace assembly was replaced during the annual inspection. The leg brace that was installed was not purchased from Beechcraft. According to Beechcraft they do not sell the leg brace as a separate item from the upper brace assembly because of the close tolerance required between the two braces in order for the gear to properly lock in the extended position. There is no information in the BE-58 maintenance manual which indicating that the upper brace assembly and the leg brace must be replaced as a unit for the main landing gear.
NTSB Probable Cause Narrative
Maintenance personnel's improper replacement of the landing gear leg brace assembly which subsequently failed to keep the landing gear in the locked position.
Event Information
| Type of Event | Accident |
| Event Date | 1/23/2008 |
| Event Day of the Week | Wednesday |
| Time of Event | 1015 |
| Event Time Zone | Central Standard Time |
| Event City | Cahokia |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 62206 |
| Event Date Year | 2008 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 383414N |
| Event Location Longitude | 0900922W |
| Event Location Airport | St. Louis/Downtown |
| Event Location Nearest Airport ID | CPS |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 413 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 953 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | CPS |
| Elevation of weather observation facility | 413 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | CST |
| 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) | -7 |
| Dew Point at event time (in degress fahrenheit) | -12 |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.23 |
| 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) | 23628 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jan 23 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | May 28 2008 12:03PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | St. Louis, MO FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4626A |
| NTSB Number | CHI08LA070 |
| Missing Aircraft Indicator | -- |
| 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 | Beech |
| Aircraft Model | 58 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | TH-39 |
| Certified Max Gross Weight | 5400 |
| 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 | 2 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jan 1 2008 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 12385 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Flight Express, Inc |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Orlando |
| Aircraft Owner State | FL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 32803 |
| Operator is an individual? | No |
| 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 | -- |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| 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) | Flight Test |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | CPS |
| Departure City | Cahokia |
| Departure State | IL |
| Departure Country | USA |
| Departure Time | 920 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | CPS |
| Destination City | Cahokia |
| Destination State | IL |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 12 2008 9:41AM |
| User who most recently changed record | BOWL |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 30L |
| Runway Length | 6997 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |