# Accident 20070630012979A: Airtrc AT502A, Chowchilla, CA, June 30, 2007

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 30, 2007, 08:30 local time
- Place: Chowchilla, CA
- Damage: Substantial damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: Agricultural (Part 137)
- Operator: T9DG
- Location: 37.0167° N, 120.3550° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.0167&lon=-120.3550&mi=10
- Aircraft: N6176L, registered now (https://openairdocs.org/aircraft/N6176L) (OpenAirDocs)
- Registry model: Air Tractor AT-502A (registry code 0390306, https://openairdocs.org/model/air-tractor-at-502a) (OpenAirDocs)
- Registry engine: Pratt & Whitney PT6A series (registry code 52032, https://openairdocs.org/engine/pratt-whitney-pt6a-series) (OpenAirDocs)
- Reported make and model: AIRTRC AT502A
- Reported engine: PWA PT6A65B
- People aboard: 1
- Fatal injuries: 0
- NTSB investigation: [NTSB SEA07LA204](https://openairdocs.org/ntsb/SEA07LA204) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20070630012979A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) AFTER TAKEOFF, THE AIRCRAFT EXPERIENCED LOSS OF POWER WITH FLAMES OBSERVED EXITING OUT OF THE EXHAUST. THE AIRCRAFT LANDED STRAIGHT AHEAD INTO A FIELD SUSTAINED DAMAGE UNDERNEATH BOTH WINGS, SUCH AS FLAPS AND AILERONS AND THE REAR SPAR AREA. PRELIMINARY INVESTIGATION BY AN OVERHAUL REPAIR FACILITY ON THE ENGINE SHOWS DAMAGE RESULTED FROM A COMPRESSOR TURBINE BLADE THAT WAS LIBERATED INTERNALLY. A MORE INDEPTH INSPECTION AND REPORT WILL FOLLOW.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA07LA204](https://openairdocs.org/ntsb/SEA07LA204), Jun 30, 2007: Air Tractor AT-502A (N6176L), Chowchilla, CA, substantial damage. Probable cause: The loss of engine power as the result of the fatigue fracture and separation of two compressor turbine blades, which induced a catastrophic failure of the compressor turbine section.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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