Individually Owned: 150,657
Corporate Owned: 137,281
General Edward Lawrence Logan Airport
Aircraft Accident/Incident Report
Boston, Massachusetts 02101
Sunday, December 9, 2001 20:20 EST
NTSB Narrative Summary Released at Completion of Accident
After touchdown, the pilot deployed the thrust reversers and shortly thereafter, the airplane yawed violently to the right. The pilot maintained control, and the airplane came to a stop on the runway. Subsequent examination of the airplane revealed that the left engine thrust reverser assembly had separated from the engine and was found on the runway. Examination of the left thrust reverser outboard pinion gearbox revealed three fatigue bolts, with multiple origins. A fourth bolt was pulled completely out of the flange and was slightly bent. The inboard pinion gearbox was fractured into two parts and contained two regions of fatigue in the rails at the forward flange. The fatigue features were consistent with low stress high-cycle fatigue. The left thrust reverser was installed on May 7, 1996. It was not determined if the left thrust reverser attaching bolts were replaced at that time. At the time of the accident, the left thrust reverser had accumulated 8,275 total landings, and 2,560 landings since it was installed.
NTSB Probable Cause Narrative
The failure of the left thrust reverser assembly due to fatigue.
Event Information
| Type of Event | Accident |
| Event Date | 12/9/2001 |
| Event Day of the Week | Sunday |
| Time of Event | 2020 |
| Event Time Zone | Eastern Standard Time |
| Event City | Boston |
| Event State | MASSACHUSETTS |
| Event Country | -- |
| Zipcode of the event site | 02101 |
| Event Date Year | 2001 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 422151N |
| Event Location Longitude | 0710018W |
| Event Location Airport | GENERAL EDWARD LAWRENCE LOGAN |
| Event Location Nearest Airport ID | BOS |
| 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 | 19 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1954 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | BOS |
| Elevation of weather observation facility | 19 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Night/Dark |
| 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) | 2 |
| Dew Point at event time (in degress fahrenheit) | -2 |
| Wind Direction (degrees magnetic) | 320 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 8 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.27 |
| 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) | 13610 |
| NTSB Notification Source | BOS FSDO |
| NTSB Notification Date | Dec 13 2001 12:00AM |
| NTSB Notification Time | 810 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jul 1 2003 9:44AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Boston |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N819GY |
| NTSB Number | NYC02LA036 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Rockwell |
| Aircraft Model | NA-265-80 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 380-066 |
| Certified Max Gross Weight | 23000 |
| 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 | 11 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Dec 8 2001 12:00AM |
| Airframe hours since last inspection | 5 |
| Airframe Hours | 9465 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Lear 25, Inc. |
| Aircraft Owner Street Address | 275 E Tropicana |
| Aircraft Owner City | Las Vegas |
| Aircraft Owner State | NV |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 89109 |
| Operator is an individual? | No |
| Operator Name | Eagle Jet Charter, Inc. |
| Operator Same as Owner? | No |
| 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 | OIZA |
| 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 | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | SUS |
| Departure City | St. Louis |
| Departure State | MO |
| Departure Country | USA |
| Departure Time | 1700 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | BOS |
| Destination City | Boston |
| Destination State | MA |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Apr 28 2003 11:16AM |
| User who most recently changed record | PEAR |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 4L |
| Runway Length | 7861 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |