Individually Owned: 150,657
Corporate Owned: 137,281
Jamestown Airport
Aircraft Accident/Incident Report
Dunkirk, New York 14048
Tuesady, June 22, 2004 10:50 EDT
NTSB Narrative Summary Released at Completion of Accident
The pilot was conducting a cross country instrument flight rules flight. The airplane was deviating around thunderstorm activity, and was cleared to it's destination airport, when radar contact was lost. A witness reported hearing an airplane overhead; however, he could not see the airplane due to haze and clouds. He described the engine noise as "revving in a cycling pattern." Within 10 seconds, he observed an airplane exit the clouds in a nose down spiral, with one wing missing. The airplane impacted Lake Erie nose first and sank. Examination of the right wing main spar revealed fractures consistent with an overstress separation and aft and upward loading. The pilot obtained a weather briefing prior to the flight. At the time of the briefing, there were no current or forecasted thunderstorms around the pilot's destination airport. There were also no convective SIGMETs valid for the area where the accident occurred. Review of weather radar around the time of the accident revealed two very strong thunderstorm cells over the western portion of New York, along Lake Erie, moving northeast. The airplane disappeared from radar, as it transitioned through the northern edge of one of the echoes in reflectivity values near 25 dBZ or very light intensity echoes. The geo-synchronous weather satellite-12 (GOES-12) visible image depicted a large band of clouds extending over Lake Erie, and New York. Several Cumulonimbus clouds were located immediately south of the accident site.
NTSB Probable Cause Narrative
The pilot's loss of aircraft control and the subsequent overstress and separation of the wing during an encounter with convection induced turbulence.
Event Information
| Type of Event | Accident |
| Event Date | 6/22/2004 |
| Event Day of the Week | Tuesday |
| Time of Event | 1050 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Dunkirk |
| Event State | NEW YORK |
| Event Country | -- |
| Zipcode of the event site | 14048 |
| Event Date Year | 2004 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 422835N |
| Event Location Longitude | 0792526W |
| Event Location Airport | Jamestown |
| Event Location Nearest Airport ID | JHW |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 24 |
| Degrees magnetic from airport | 350 |
| Airport Elevation | 693 |
| Weather Briefing Completeness | Abbreviated |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1053 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 80 |
| Weather Observation Facility ID | DKK |
| Elevation of weather observation facility | 693 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1500 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 6 |
| Air Temperature at event time (in degrees celsius) | 19 |
| Dew Point at event time (in degress fahrenheit) | 18 |
| Wind Direction (degrees magnetic) | 230 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.75 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 17843 |
| NTSB Notification Source | FAA EROC |
| NTSB Notification Date | Jun 22 2004 12:00AM |
| NTSB Notification Time | 1330 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 8 2005 12:51PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | Rochester |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N99HW |
| NTSB Number | NYC04FA144 |
| Missing Aircraft Indicator | Y |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | P210N |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | P21000487 |
| Certified Max Gross Weight | 3800 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| 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 | Dec 28 2003 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1252 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Stone House Aviation Inc. |
| Aircraft Owner Street Address | P.O. Box 130 |
| Aircraft Owner City | Indian River |
| Aircraft Owner State | MI |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 49749 |
| 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 | No |
| Departure Airport Code | FNT |
| Departure City | Flint |
| Departure State | MI |
| Departure Country | USA |
| Departure Time | 942 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | JHW |
| Destination City | Jameston |
| Destination State | NY |
| Destination Country | USA |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Apr 14 2005 1:22PM |
| User who most recently changed record | PEAR |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |