Probable cause
Loss of engine power due to the installation of incorrect turbine blades on the compressor turbine disk during repair of the disk assembly.
NTSB analysis
Shortly after takeoff during an agricultural application flight, approximately 834 hours since the turbine blades were installed, the engine experienced a loss of power resulting in a forced landing. Unable to dump his chemical load due to cars on a highway, the pilot executed a forced landing in a field resulting in substantial damage to both wings. Examination of the engine revealed that during repair of the compressor turbine disk in 2005, incorrect part number Federal Aviation Administration (FAA) Parts Manufacturer Approval (PMA) turbine blades were installed in all positions of the compressor turbine disk of the accident engine. The engine was approved for return to service. One of the turbine blades failed due to fatigue causing the remaining blades to fracture due to overstress.
Text from the NTSB. Open the NTSB docket for MIA08LA133 for the full record.
Event
- Date
- Jul 5, 2008
- Type
- Accident
- Place
- Colquitt, Georgia
- Highest injury
- Minor
- Minor injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Rockwell International S-2R
- N-number
- N8499V
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 137 (agricultural)
- Purpose of flight
- Aerial application
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.