Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Osborne, Kansas 67473
Saturday, August 5, 2000 8:00 CDT
NTSB Narrative Summary Released at Completion of Accident
The agricultural airplane was destroyed when it impacted terrain following a gear collapse during a forced landing while returning from spraying operations. The airplane was found resting in a soft farm field of wheat stubble. The pilot was fatally injured. The seat belt cable and shoulder harness cable were found separated. The separated areas exhibited signatures consistent with tensile overload. The pilot was not wearing a helmet and the manual control for the shoulder harness inertia reel was found in the unlocked position. The engine was examined and the number four cylinder was found to be compromised. A portion of the piston pin was protruding through a hole in the cylinder wall. Examination of the number four piston and intake valve revealed that the valve failed due to overstress. Portions of the piston skirt had fractured and separated from the piston. The fracture surfaces on the piston contained severe mechanical damage that obscured the fracture surface features. One side of the piston skirt exhibited damage consistent with the piston rotating about the piston pin and the connecting rod impacting the skirt. No other anomalies were found that could be associated with a preexisting condition.
NTSB Probable Cause Narrative
The unsuitable terrain for landing encountered by the pilot during the forced landing. Factors were the failure of the number four piston and cylinder, the soft terrain, and the main landing gear overload and subsequent collapse.
Event Information
| Type of Event | Accident |
| Event Date | 8/5/2000 |
| Event Day of the Week | Saturday |
| Time of Event | 800 |
| Event Time Zone | Central Daylight Time |
| Event City | OSBORNE |
| Event State | KANSAS |
| Event Country | -- |
| Zipcode of the event site | 67473 |
| Event Date Year | 2000 |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 753 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 192 |
| Weather Observation Facility ID | RSL |
| Elevation of weather observation facility | 1862 |
| Distance of event from weather observation facility (units?) | 36 |
| 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) | 72 |
| Dew Point at event time (in degress fahrenheit) | 63 |
| Wind Direction (degrees magnetic) | 190 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| 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 | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 10376 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Aug 5 2000 12:00AM |
| NTSB Notification Time | 900 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Aug 29 2001 10:56AM |
| User who most recently changed record | MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N57616 |
| NTSB Number | CHI00LA243 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Piper |
| Aircraft Model | PA-36-285 |
| Aircraft Series Identifier | PA-36-285 |
| Aircraft Serial Number | 36-7660015 |
| Certified Max Gross Weight | 3900 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Nov 22 1999 12:00AM |
| Airframe hours since last inspection | 136 |
| Airframe Hours | 4063 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | ROBERT D SAHM |
| Aircraft Owner Street Address | PO BOX 6, 218 S OAK |
| Aircraft Owner City | OSBORNE |
| Aircraft Owner State | KS |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 67473 |
| 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 | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Agriculture |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | K75 |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 0 |
| Departure Time Zone | |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jul 19 2001 4:04AM |
| 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 | -- |