Individually Owned: 150,657
Corporate Owned: 137,281
Aurora Municipal Airport
Aircraft Accident/Incident Report
Sugar Grove, Illinois 60554
Wednesday, July 25, 2012 8:50 CDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that shortly after takeoff, the airplane’s engine lost partial power and shook violently. The pilot elected to land the airplane in a cornfield off the end of the runway, where the it sustained substantial damage to both wings. A postaccident engine run performed with the engine still mounted on the airframe revealed no anomalies, but full-power testing could not be performed due to shortening of the propeller blades to facilitate the test. A mechanic who performed work on the engine after the accident reported that the turbocharger was full of oil and that the shaft appeared to be loose. As a result, the turbocharger was replaced with an overhauled unit. The mechanic also reported that the mechanical fuel pump was replaced after the accident but prior to arrival at the engine repair facility. It was reportedly replaced to correct a lean mixture condition, but the mechanic could not verify the reason. Based on the available information, the reason for the engine's partial loss of power could not be determined during the course of the investigation.
NTSB Probable Cause Narrative
The partial loss of engine power for reasons that could not be determined because postaccident testing and examination did not reveal any anomalies that would have precluded normal operation.
Event Information
| Type of Event | Accident |
| Event Date | 7/25/2012 |
| Event Day of the Week | Wednesday |
| Time of Event | 850 |
| Event Time Zone | Central Daylight Time |
| Event City | Sugar Grove |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 60554 |
| Event Date Year | 2012 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 414619N |
| Event Location Longitude | 0882832W |
| Event Location Airport | Aurora Municipal Airport |
| Event Location Nearest Airport ID | ARR |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 712 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 852 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | ARR |
| Elevation of weather observation facility | 712 |
| 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 | 25000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 9 |
| Air Temperature at event time (in degrees celsius) | 26 |
| Dew Point at event time (in degress fahrenheit) | 21 |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.87 |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 31809 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Sep 5 2013 1:09PM |
| User who most recently changed record | bowl |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N471BB |
| NTSB Number | CEN12LA481 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | RAYTHEON AIRCRAFT COMPANY |
| Aircraft Model | B36TC |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | EA-694 |
| 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 | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 12 2012 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 785 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | BAGGETT DAN A |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | MOUNTAIN VIEW |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 94040-1332 |
| Operator is an individual? | Yes |
| Operator Name | BAGGETT DAN A |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | MOUNTAIN VIEW |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | 94040-1332 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| 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 | ARR |
| Departure City | Sugar Grove |
| Departure State | IL |
| Departure Country | USA |
| Departure Time | 850 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | OSH |
| Destination City | Oshkosh |
| Destination State | WI |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Sep 4 2013 11:23AM |
| User who most recently changed record | brajo |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 36 |
| Runway Length | 3198 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |