Individually Owned: 150,657
Corporate Owned: 137,281
Downtown Airpark Airport
Aircraft Accident/Incident Report
Oklahoma City, Oklahoma 73145
Saturday, September 10, 1994 13:26 CDT
NTSB Narrative Summary Released at Completion of Accident
WITNESSES REPORTED THAT DURING THE TAKEOFF INITIAL CLIMB, ENGINE SOUNDS CEASED AND THE PROPELLER STOPPED IN A VERTICAL POSITION. THE AIRPLANE TOUCHED DOWN ON A GRASSY AREA BEYOND THE DEPARTURE END OF THE RUNWAY; AFTER TRAVERSING ROUGH AND UNEVEN TERRAIN, IT ENCOUNTERED A DIRT BANK AND BECAME AIRBORNE. THE AIRPLANE THEN DESCENDED INTO A 25' DEEP RAVINE. AN EXAMINATION REVEALED THE ENGINE WAS BINDING DURING ROTATION AND THE FRONT REDUCTION GEAR CASE WAS REMOVED. THE PROPELLER SHAFT THRUST BEARINGS FIT LOOSELY ABOUT THE JOURNAL, EXHIBITED SCRATCHES, AND WERE NOT THE CORRECT BEARINGS. BOTH THE PROPELLER DRIVER GEAR FRONT BEARING AND REAR BEARING WERE SOLID BRASS BEARINGS. THE MANUFACTURER PRINT SPECIFICATIONS FOR THESE BEARINGS LISTED A STEEL BACKED SPLIT BEARING. THE FRONT BEARING WAS SEIZED TO THE PROPELLER DRIVE GEAR. THE CRANKCASE AND THE FORWARD GEAR CASE EXHIBITED GALLING AND METAL DEBRIS, WHICH WAS IDENTIFIED AS ALUMINUM FROM THE MAIN GEAR CASE. THE ENGINE MAIN BEARINGS AND ROD BEARINGS EXHIBITED SCRATCHES.
NTSB Probable Cause Narrative
IMPROPER MAINTENANCE OF THE ENGINE BY UNKNOWN PERSON(S), THE INSTALLATION OF UNAPPROVED PARTS, AND SUBSEQUENT BEARING SEIZURE. THE LACK OF SUITABLE TERRAIN IN THE FORCED LANDING AREA WAS A RELATED FACTOR.
Event Information
| Type of Event | Accident |
| Event Date | 9/10/1994 |
| Event Day of the Week | Saturday |
| Time of Event | 1326 |
| Event Time Zone | Central Daylight Time |
| Event City | OKLAHOMA CITY |
| Event State | OKLAHOMA |
| Event Country | -- |
| Zipcode of the event site | 73145 |
| Event Date Year | 1994 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | DOWNTOWN AIRPARK |
| Event Location Nearest Airport ID | 2DT |
| 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 | 1180 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1456 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 208 |
| Weather Observation Facility ID | OKC |
| Elevation of weather observation facility | 1180 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | CDT |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 28 |
| Dew Point at event time (in degress fahrenheit) | 14 |
| Wind Direction (degrees magnetic) | 140 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 15 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1529 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Sep 10 1994 12:00AM |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 6 2000 12:14PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7554M |
| NTSB Number | FTW94FA295 |
| 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 | 175 |
| Aircraft Series Identifier | 175 |
| Aircraft Serial Number | 55854 |
| Certified Max Gross Weight | 2350 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | Unknown |
| 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 | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | RIGSBY, RUSSELL M. |
| Aircraft Owner Street Address | ROUTE 2, NOX 55 |
| Aircraft Owner City | TRYON |
| Aircraft Owner State | OK |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 74875 |
| 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 | |
| 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 | Yes |
| Departure Airport Code | 2DT |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1324 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | 2DT |
| Destination City | |
| Destination State | OK |
| Destination Country | |
| Specific Phase of Flight | Emergency 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 | 16 |
| Runway Length | 3240 |
| Runway Width | 85 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |