ASN Wikibase Occurrence # 133527
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Friday 13 June 1997 |
| Time: | 16:00 LT |
| Type: |  Air Tractor AT-400A |
| Owner/operator: | Ricky D. Harris |
| Registration: | N3161J |
| MSN: | 400A-0489 |
| Year of manufacture: | 1983 |
| Total airframe hrs: | 4743 hours |
| Engine model: | P&W PT6A-20 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Black Oak, AR -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Earle, AR (NONE) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Shortly after takeoff, the agricultural airplane lost power. During the forced landing, the airplane was destroyed. Wreckage examination revealed that the propeller blades were in the flat pitch range, bent straight rearward. The blades did not have a twist set nor was there leading edge damage corresponding to powered rotation at impact. Engine examination revealed that all of the blades of the compressor turbine disc were damaged or fragmented. Two of the 58 blades were found fractured at the root and several blade tips showed thermal distress. The compressor disc shroud segment had ballistic indentations corresponding to the fragmented compressor blades. Both power turbine and compressor turbine shroud segments did not show circumferential machining. The fuel filter from the high pressure fuel pump had black residues embedded throughout the filter element. All 58 blades on the compressor turbine disc had been replaced in 1991. No reference was found as to whether or not the replacement blades were new or used parts. The last recorded hot section was in December, 1994, at 7,063.2 hours TSOH. The TSOH at the time of the accident was 7,632.5 hours.
Probable Cause: The loss of engine power due to compressor turbine blade failure. A factor was the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB FTW97LA223
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Apr-2024 14:52 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation