Individually Owned: 150,657
Corporate Owned: 137,281
Matinicus Island Airport
Aircraft Accident/Incident Report
Matinicus Islnd, Maine 04851
Friday, September 1, 2006 12:30 EDT
NTSB Narrative Summary Released at Completion of Accident
After engine start, the pilot heard "an abnormal engine mechanical noise." He shut down the engine and requested a mechanic. During a subsequent engine start, the mechanic confirmed the mechanical engine noise, and the engine was again shut down. Hand propping revealed that the engine would sometimes "mechanically jam," and further examination revealed the fracture of two crankshaft gear teeth. Both gear teeth exhibited signatures consistent with overload. Corresponding starter adapter gear teeth, that would have meshed with the crankshaft gear teeth during the startup, were cracked on the loaded side. All evaluated metallurgical requirements were met, including core hardness, surface hardness and case depth. Although a single "kick back" while cranking could cause the failure of components of the cranking system, there was no evidence as to why a kick back may have occurred.
NTSB Probable Cause Narrative
An engine kick back of undetermined origin during engine start.
Event Information
| Type of Event | Incident |
| Event Date | 9/1/2006 |
| Event Day of the Week | Friday |
| Time of Event | 1230 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Matinicus Islnd |
| Event State | MAINE |
| Event Country | -- |
| Zipcode of the event site | 04851 |
| Event Date Year | 2006 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 435224N |
| Event Location Longitude | 0685341W |
| Event Location Airport | Matinicus Island Airport |
| Event Location Nearest Airport ID | 35ME |
| 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 | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Unknown |
| 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 | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 20 |
| Air Temperature at event time (in degrees celsius) | 18 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Calm |
| 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 | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 23100 |
| NTSB Notification Source | Pilot |
| NTSB Notification Date | Sep 25 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 | Portland |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8411Q |
| NTSB Number | NYC06IA226 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 206F |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | U206F03271 |
| Certified Max Gross Weight | 3600 |
| 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 | 100 Hour |
| Date of Last Inspection | Aug 1 2006 12:00AM |
| Airframe hours since last inspection | 10 |
| Airframe Hours | 7198 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Telford Aviation, Inc. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Bangor |
| Aircraft Owner State | ME |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 04401 |
| Operator is an individual? | No |
| Operator Name | Waters Aero-Marine |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | South Thomaston |
| Operator State | ME |
| Operator Country | USA |
| Operator Zip code | 04858 |
| Operator Code | -- |
| Owner has at least one certificate | -- |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | 45ME |
| Departure City | Maticus Island |
| Departure State | ME |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | RKD |
| Destination City | Owls Head |
| Destination State | ME |
| Destination Country | USA |
| Specific Phase of Flight | Standing - starting engine(s) |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 13 2008 1:32PM |
| User who most recently changed record | MUZD |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |