Farmingdale - Saratoga Springs

The pilot and the five passengers, who were employees of an industrial services company, were returning from a job site with hazardous materials used for blasting operations. The airplane was in a climb, at an altitude of 8,500 feet, when it experienced a catastrophic engine failure. The pilot declared an emergency and subsequently performed a forced landing to a field. During the landing, the airplane's right wing struck a tree and separated. All occupants exited the airplane without injury; however, the airplane became fully engulfed in fire, which consumed the majority of the airplane. The airplane was equipped with a turbine engine that, at the time of the accident, had been operated for about 7,620 hours since new and 65 hours since it was overhauled about 19 months prior to the accident. Impact damage was observed to the interior of the engine exhaust duct. In addition, the exhaust duct contained portions of a fractured power turbine blade. Additional examination of the engine revealed damage consistent with a distressed 1st stage sun gear, and associated compressor turbine and power turbine damage. Examination of the sun gear teeth output splines revealed that they were too damaged to determine the cause of their deterioration. It was noted that the sun gear found on the accident engine was previously removed from another engine due to "spalled gear teeth" about 7 years prior to the accident. The condition of the sun gear when installed on the accident engine could not be determined.
Farmingdale - Saratoga Springs — crash photo

Flight / Schedule

Farmingdale - Saratoga Springs

Registration

N336DN

MSN

208-0001

Year of Manufacture

1985

Date

September 15, 2009 at 02:35 PM

Type

CRASH

Flight Type

Charter/Taxi (Non Scheduled Revenue Flight)

Flight Phase

Flight

Crash Site

Plain, Valley

Crash Location

Sheffield Massachusetts

Region

North America • United States of America

Coordinates

42.1105°, -73.3533°

Crash Cause

Technical failure

Narrative Report

On September 15, 2009 at 02:35 PM, Farmingdale - Saratoga Springs experienced a crash involving Cessna 208A Caravan, operated by North American Flight Services, with the event recorded near Sheffield Massachusetts.

The flight was categorized as charter/taxi (non scheduled revenue flight) and the reported phase was flight at a plain, valley crash site.

6 people were known to be on board, 0 fatalities were recorded, 6 survivors were identified or estimated. This corresponds to an estimated fatality rate of 0.0%.

Crew on board: 1, crew fatalities: 0, passengers on board: 5, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is technical failure. The pilot and the five passengers, who were employees of an industrial services company, were returning from a job site with hazardous materials used for blasting operations. The airplane was in a climb, at an altitude of 8,500 feet, when it experienced a catastrophic engine failure. The pilot declared an emergency and subsequently performed a forced landing to a field. During the landing, the airplane's right wing struck a tree and separated. All occupants exited the airplane without injury; however, the airplane became fully engulfed in fire, which consumed the majority of the airplane. The airplane was equipped with a turbine engine that, at the time of the accident, had been operated for about 7,620 hours since new and 65 hours since it was overhauled about 19 months prior to the accident. Impact damage was observed to the interior of the engine exhaust duct. In addition, the exhaust duct contained portions of a fractured power turbine blade. Additional examination of the engine revealed damage consistent with a distressed 1st stage sun gear, and associated compressor turbine and power turbine damage. Examination of the sun gear teeth output splines revealed that they were too damaged to determine the cause of their deterioration. It was noted that the sun gear found on the accident engine was previously removed from another engine due to "spalled gear teeth" about 7 years prior to the accident. The condition of the sun gear when installed on the accident engine could not be determined.

Aircraft reference details include registration N336DN, MSN 208-0001, year of manufacture 1985.

Geospatial coordinates for this crash are approximately 42.1105°, -73.3533°.

Fatalities

Total

0

Crew

0

Passengers

0

Other

0

Crash Summary

The pilot and the five passengers, who were employees of an industrial services company, were returning from a job site with hazardous materials used for blasting operations. The airplane was in a climb, at an altitude of 8,500 feet, when it experienced a catastrophic engine failure. The pilot declared an emergency and subsequently performed a forced landing to a field. During the landing, the airplane's right wing struck a tree and separated. All occupants exited the airplane without injury; however, the airplane became fully engulfed in fire, which consumed the majority of the airplane. The airplane was equipped with a turbine engine that, at the time of the accident, had been operated for about 7,620 hours since new and 65 hours since it was overhauled about 19 months prior to the accident. Impact damage was observed to the interior of the engine exhaust duct. In addition, the exhaust duct contained portions of a fractured power turbine blade. Additional examination of the engine revealed damage consistent with a distressed 1st stage sun gear, and associated compressor turbine and power turbine damage. Examination of the sun gear teeth output splines revealed that they were too damaged to determine the cause of their deterioration. It was noted that the sun gear found on the accident engine was previously removed from another engine due to "spalled gear teeth" about 7 years prior to the accident. The condition of the sun gear when installed on the accident engine could not be determined.

Cause: Technical failure

Occupants & Outcome

Crew On Board

1

Passengers On Board

5

Estimated Survivors

6

Fatality Rate

0.0%

Known people on board: 6

Operational Details

Schedule / Flight

Farmingdale - Saratoga Springs

Flight Type

Charter/Taxi (Non Scheduled Revenue Flight)

Flight Phase

Flight

Crash Site

Plain, Valley

Region / Country

North America • United States of America

Aircraft Details

Registration

N336DN

MSN

208-0001

Year of Manufacture

1985

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