Individually Owned: 150,657
Corporate Owned: 137,281
Okmulgee Airport
Aircraft Accident/Incident Report
Okmulgee, Oklahoma 74447
Thursday, May 9, 1996 16:25 CST
NTSB Narrative Summary Released at Completion of Accident
En route at 6,000 feet MSL, a total loss of engine power occurred. The airplane was being vectored to the nearest airport when the pilot restarted the engine. The pilot landed without further incident and troubleshooting by the pilot and a mechanic did not reveal any obvious problems. Following 2 ground run-ups, the flight departed the airport and the pilot performed a series of maneuvers at 4,000 feet MSL above the airport. During the on course turn, a total loss of engine power occurred, and the pilot performed a forced landing. The airplane landed short of runway 17, and during the landing flare/touchdown the left wing struck a tree. The last annual inspection was logged on March 5, 1996, and the mechanic stated 'AD's current' with the airplane and engine found to be 'airworthy and approved for return to service.' No mention was made of compliance with AD 76-07-12 which requires a functional check of the ignition switch to be performed every 100 hours. During an engine test run, the engine would operate intermittently through the ignition switch position. Internal points of the switch were worn and exhibited evidence of arcing.
NTSB Probable Cause Narrative
THE PILOT'S CONTINUED OPERATION WITH KNOWN DEFICIENCIES IN THE AIRPLANE AND THE PILOT'S AND MAINTENANCE PERSONNEL'S FAILURE TO COMPLY WITH AN AIRWORTHINESS DIRECTIVE RESULTING IN THE MALFUNCTIONING OF A WORN IGNITION SWITCH. A FACTOR WAS TREES.
Event Information
| Type of Event | Accident |
| Event Date | 5/9/1996 |
| Event Day of the Week | Thursday |
| Time of Event | 1625 |
| Event Time Zone | Central Standard Time |
| Event City | OKMULGEE |
| Event State | OKLAHOMA |
| Event Country | -- |
| Zipcode of the event site | 74447 |
| Event Date Year | 1996 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | OKMULGEE |
| Event Location Nearest Airport ID | OKM |
| 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 | 713 |
| Weather Briefing Completeness | Unknown |
| 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 | 3000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| 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) | -- |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 18 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 31 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 724 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 9 1996 12:00AM |
| NTSB Notification Time | 1815 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 10:00AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N202EX |
| NTSB Number | FTW96LA204 |
| 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 | 172G |
| Aircraft Series Identifier | 172G |
| Aircraft Serial Number | 17253456 |
| Certified Max Gross Weight | 2300 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Mar 5 1996 12:00AM |
| Airframe hours since last inspection | 38 |
| Airframe Hours | 2924 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | PAUL H. HOFFMAN |
| Aircraft Owner Street Address | 237 SOUTH JEFFERSON |
| Aircraft Owner City | GOLIAD |
| Aircraft Owner State | TX |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 77963 |
| 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 | OKM |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1615 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CRS |
| Destination City | CORSICANA |
| Destination State | TX |
| Destination Country | |
| Specific Phase of Flight | Maneuvering |
| 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 | 17 |
| Runway Length | 4300 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |