Individually Owned: 150,657
Corporate Owned: 137,281
St. Augustine Airport
Aircraft Accident/Incident Report
St. Augustine, Florida 32095
Tuesady, May 23, 2006 12:58 EDT
NTSB Narrative Summary Released at Completion of Accident
The airplane experienced a loss of engine power due to failure of the crankshaft and separation of the propeller and propeller flange during the initial climb shortly after takeoff. The pilot reversed course and landed on a taxiway at the departure airport without further incident. At the time of the event, the airplane and engine had accumulated a total time of 399.3 hours. Metallurgical examination determined that the crankshaft separation was the result of a lubrication failure at the #2 main bearing. The lubrication failure then allowed excessive friction to overheat the bearing journal on the crankshaft producing ladder cracks in the surface and at the oil transfer hole. These cracks in turn initiated torsional fatigue cracks that ultimately lead to the separation of the crankshaft. The root cause of the lubrication failure was likely the result of intermittent oil flow to the bearing or of improper assembly (fitting) of the bearing shells to the crankshaft. Considering that the other bearings did not show distress and the short time since engine assembly, it is more likely that an assembly issue was the cause. No preexisting metallurgical or mechanical discrepancies were found with the crankshaft.
NTSB Probable Cause Narrative
The loss of engine power due to separation of the crankshaft as a result of lack of adequate oil lubrication to the #2 main bearing. The lack of oil lubrication was most likely the result of improper assembly (fitting) of the bearing shells to the crankshaft.
Event Information
| Type of Event | Incident |
| Event Date | 5/23/2006 |
| Event Day of the Week | Tuesday |
| Time of Event | 1258 |
| Event Time Zone | Eastern Daylight Time |
| Event City | St. Augustine |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 32095 |
| Event Date Year | 2006 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 295733N |
| Event Location Longitude | 0812023W |
| Event Location Airport | St. Augustine |
| Event Location Nearest Airport ID | SGJ |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 10 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1255 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KSGJ |
| Elevation of weather observation facility | 10 |
| 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) | 8 |
| Air Temperature at event time (in degrees celsius) | 31 |
| Dew Point at event time (in degress fahrenheit) | 16 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.04 |
| 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) | 23050 |
| NTSB Notification Source | Pilot |
| NTSB Notification Date | May 23 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Feb 28 2008 3:59PM |
| 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 | N1130T |
| NTSB Number | MIA06IA110 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 172S |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 172S9874 |
| Certified Max Gross Weight | 2550 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Apr 1 2006 12:00AM |
| Airframe hours since last inspection | 49 |
| Airframe Hours | 399 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SAL Enterprises LLC |
| Aircraft Owner Street Address | 1946 Southcreek Blvd. |
| Aircraft Owner City | Port Orange |
| Aircraft Owner State | FL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 32128 |
| Operator is an individual? | No |
| Operator Name | Epic Aviation |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 600 Skyline Drive |
| Operator City | New Smyrna Beach |
| Operator State | FL |
| Operator Country | USA |
| Operator Zip code | 32168 |
| 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 | Yes |
| Departure Airport Code | KSGJ |
| Departure City | St. Augustine |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | 1253 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | KEVB |
| Destination City | New Smyrna Bch |
| Destination State | FL |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 5 2008 2:44PM |
| User who most recently changed record | KENJ |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 31 |
| Runway Length | 7996 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |