Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Pocatello, Idaho 83221
Tuesady, January 30, 2007 13:50 MST
NTSB Narrative Summary Released at Completion of Accident
During the climb to cruise altitude, the bolt that holds the elevator trim tab actuator rod to the trim tab horn came loose from its retaining nut and separated from the aircraft. This led to severe airframe vibration, and eventually to violent elevator flutter. As a result of the flutter, the inboard half of the right elevator separated from the airframe. By reducing power on the right engine, and adding power on the left engine, the pilot was able to crab the aircraft, reduce the airflow over the right stabilizer/elevator, and ultimately execute an emergency full-stop landing.
NTSB Probable Cause Narrative
The separation of the bolt that attaches the elevator trim tab actuator rod to the elevator trim tab horn, resulting in violent flutter of the elevator, and eventually to the separation of the inboard half of the right elevator.
Event Information
| Type of Event | Accident |
| Event Date | 1/30/2007 |
| Event Day of the Week | Tuesday |
| Time of Event | 1350 |
| Event Time Zone | Mountain Standard Time |
| Event City | Pocatello |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83221 |
| Event Date Year | 2007 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 430725N |
| Event Location Longitude | 1122714W |
| 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 | -- |
| Investigator's weather source | Pilot |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| 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) | 25 |
| Air Temperature at event time (in degrees celsius) | -1 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| 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) | 21531 |
| NTSB Notification Source | FAA Operations Center |
| NTSB Notification Date | Jan 30 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | May 29 2007 12:24PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Salt Lake FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4584L |
| NTSB Number | SEA07LA055 |
| 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 | Cessna |
| Aircraft Model | 421 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 421-0184 |
| Certified Max Gross Weight | 6840 |
| 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 | 8 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Sep 1 2006 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 4381 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | -- |
| ELT Type | -- |
| Aircraft Owner Name | Bully Dog Technologies |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Aberdeen |
| Aircraft Owner State | ID |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 83210 |
| 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 | 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) | Ferry |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | KIDA |
| Departure City | Idaho Falls |
| Departure State | ID |
| Departure Country | USA |
| Departure Time | 1340 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | KU01 |
| Destination City | American Falls |
| Destination State | ID |
| Destination Country | USA |
| Specific Phase of Flight | Climb - to cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Apr 12 2007 6:59PM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |