Gainesville Regional Airport
Aircraft Accident/Incident Report

Gainesville, Florida 32609
Sunday, April 16, 2006 11:53 EDT

NTSB Narrative Summary Released at Completion of Accident

The airplane crashed into the terminal building following a loss of control on takeoff initial climb from runway 25. Witnesses reported that shortly after takeoff, the airplane banked sharply to the left, then it seemed to momentarily stabilize and commence a climb before beginning to roll to the left again. The airplane rolled to an inverted position, entered a dive, collided with the airport terminal building and exploded on impact. The entire airplane sustained severe fire and impact damage. Examination of the engines and propellers revealed no evidence of any discrepancies that would preclude normal operation. All the propeller blades displayed signatures indicative of high rotational energy at the time of impact, indicating that both propellers were rotating, not feathered, and the engines were operating at high power at the time of impact. Components of the autopilot system, specifically the pitch servo assembly and a portion of the roll servo assembly, were identified in the wreckage. The portion of the roll servo assembly found remained attached to a piece of skin torn from the airframe and consisted of the mounting bracket for the roll servo with the capstan bolted to the bracket, clearly indicating that this component had been reinstalled and strongly suggesting that the pilot reinstalled/reactivated all of the removed autopilot components the day before the accident. Maintenance personnel started an annual inspection on the airplane the month prior to the accident and found an autopilot installed in the airplane without the proper paperwork. The pilot explained to them that he designed and built the autopilot and was in the process of getting the proper paperwork for the installation of the system in his airplane. During the inspection, a mechanic found the aileron cable rubbing on the autopilot's roll servo capstan so the mechanic removed the roll servo along with the capstan. Additionally, mechanics disabled the autopilot's pitch servo and removed the autopilot control head. They were in the process of completing the inspection when the pilot asked for the airplane stating that he needed it for a trip. The pilot also asked that the airplane be returned to him without the interior installed. Two days before the accident, the airplane was returned to the pilot with the annual inspection incomplete. The autopilot control head, roll servo and capstan were returned to the pilot in a cardboard box on this date. A friend of the pilot reported that the day before the accident, the pilot completed reinstalling the seats and "other things" in order to fly the airplane the next day. It is possible that improper installation or malfunction of the autopilot resulted in the loss of control; however, the extent of damage and fragmentation of the entire airplane wreckage precluded detailed examination of the flight control and autopilot systems and hence a conclusive determination of the reason for the loss of control.

NTSB Probable Cause Narrative

The loss of control for an undetermined reason.

Event Information

Type of Event Accident
Event Date 4/16/2006
Event Day of the Week Sunday
Time of Event 1153
Event Time Zone Eastern Daylight Time
Event City Gainesville
Event State FLORIDA
Event Country --
Zipcode of the event site 32609
Event Date Year 2006
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 294124N
Event Location Longitude 0821618W
Event Location Airport Gainesville Regional
Event Location Nearest Airport ID GNV
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0.25
Degrees magnetic from airport --
Airport Elevation 152
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1153 Eastern Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID GNV
Elevation of weather observation facility 149
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
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) 25
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 23252
NTSB Notification Source FAA ATL Comm. Center
NTSB Notification Date Apr 16 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 31 2008 11:52AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Orlando, Florida

Aircraft Involved

Aircraft #1

Aircraft Registration Number N999DE
NTSB Number MIA06FA090
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name Beech
Aircraft Model B-60
Aircraft Series Identifier --
Aircraft Serial Number P-447
Certified Max Gross Weight --
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 2901
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Ocem Avionics Inc.
Aircraft Owner Street Address 1108 NW 36th Drive
Aircraft Owner City Gainesville
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 32605
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code GNV
Departure City Gainesville
Departure State FL
Departure Country USA
Departure Time 1153
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code GNV
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Takeoff - initial climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 10 2008 10:42AM
User who most recently changed record KENJ
Since inspection or accident Last Inspection
Event Location Runway Number and Location 25
Runway Length 4158
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --