Individually Owned: 150,657
Corporate Owned: 137,281
Salina Municipal Airport
Aircraft Accident/Incident Report
Salina, Kansas 67401
Tuesady, June 12, 2001 13:00 CDT
NTSB Narrative Summary Released at Completion of Accident
During a test flight, the airplane encountered an elevator system oscillation while in a high-speed dive outside the normal operating envelope. The 17 second oscillation was recorded on the cockpit voice recorder and had an average frequency of 28 Hz. The aft elevator sector clevis (p/n 2331510-32) fractured due to reverse bending fatigue caused by vibration, resulting in a complete loss of elevator control. The flight crew reported that pitch control was established by using horizontal stabilizer pitch trim. The flightcrew stated that during final approach to runway 17 (13,337 feet by 200 feet, dry/asphalt) the aircraft's nose began to drop and that the flying pilot was unable to raise the nose using a combination of horizontal stabilizer trim and engine power. The aircraft landed short of the runway, striking an airport perimeter fence and a berm. The surface winds were from the south at 23 knots, gusting to 32 knots.
NTSB Probable Cause Narrative
The PIC's delayed remedial action during the elevator system oscillation, resulting in the failure of the aft elevator sector clevis due to reverse bending fatigue caused by vibration, and subsequent loss of elevator control. Factors contributing to the accident were high and gusting winds, the crosswind, the airport perimeter fence, and the berm.
Event Information
| Type of Event | Accident |
| Event Date | 6/12/2001 |
| Event Day of the Week | Tuesday |
| Time of Event | 1300 |
| Event Time Zone | Central Daylight Time |
| Event City | Salina |
| Event State | KANSAS |
| Event Country | -- |
| Zipcode of the event site | 67401 |
| Event Date Year | 2001 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 384901N |
| Event Location Longitude | 0973847W |
| Event Location Airport | Salina Municipal Airport |
| Event Location Nearest Airport ID | SLN |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0.5 |
| Degrees magnetic from airport | 360 |
| Airport Elevation | 1273 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1253 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | SLN |
| Elevation of weather observation facility | 1273 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | CDT |
| 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) | 33 |
| Dew Point at event time (in degress fahrenheit) | 20 |
| Wind Direction (degrees magnetic) | 180 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 23 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 28 |
| Altimeter Setting at event time (in. Hg) | 29.61 |
| Density Altitude (feet) | 4065 |
| Intensity of Precipitation | -- |
| METAR weather report | KSLN 121753Z 18023G28KT 10SM CLR 33/20 A2961 RMK A |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 2 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 14159 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jun 12 2001 12:00AM |
| NTSB Notification Time | 1400 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Nov 25 2003 11:36AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA, Wichita FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N333CG |
| NTSB Number | CHI01MA163 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Learjet |
| Aircraft Model | 25D |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 262 |
| Certified Max Gross Weight | 15000 |
| 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 | 3 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Jun 8 2001 12:00AM |
| Airframe hours since last inspection | 2.8 |
| Airframe Hours | 8419.5 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | Butler National, Inc. |
| Aircraft Owner Street Address | 19920 West 161st Street |
| Aircraft Owner City | Olathe |
| Aircraft Owner State | KS |
| Aircraft Owner Country | -- |
| Aircraft Owner Zipcode | 66062 |
| Operator is an individual? | No |
| Operator Name | Avcon Industries, Inc. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 516 North Oliver, P.O. Box 748 |
| Operator City | Newton |
| Operator State | KS |
| Operator Country | -- |
| Operator Zip code | 67114 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| 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 | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | EWK |
| Departure City | Newton |
| Departure State | KS |
| Departure Country | USA |
| Departure Time | 1155 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | SLN |
| Destination City | Salina |
| Destination State | KS |
| Destination Country | USA |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 22 2003 10:22AM |
| User who most recently changed record | JOHB |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 17 |
| Runway Length | 13337 |
| Runway Width | 200 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |