Air Tractor AT-802F N6159F
11 August 2000 · Salmon River, Idaho, United States · No injuries
Summary
On 11 August 2000 at about 18:36 local time, a Air Tractor AT-802F registered N6159F was involved in an accident near Salmon River, Idaho, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 18:36
- Classification
- Accident
- Location
- Salmon River, Idaho, United States
- Coordinates
- 45.9395, -116.5197
- Aircraft
- Air Tractor AT-802F
- Registration
- N6159F
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 137: Agricultural
- Purpose of flight
- Aerial Application
- Phase of flight
- Not recorded
- Route
- Grangeville → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA00LA160
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
Compressor turbine blade failure due to high-cycle fatigue initiating in the surface of the fir-tree root. Factors include unsuitable terrain for an emergency landing.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
While conducting fire suppression operations the airplane sustained substantial damage subsequent to a loss of engine power and forced landing. The pilot reported that during a normal application run over the fire, the airplane lost engine power. Due to unsuitable terrain for an emergency landing, the pilot ditched the airplane into a nearby river. Post accident inspection of the turbine engine revealed that a compressor turbine blade was fractured in the first serration of the fir-tree root. Personnel from the Materials Laboratory examined the fracture face of the affected turbine blade and reported that the fracture surface appeared smooth with a curving boundary, typical of fatigue. Fatigue striations and ratchet marks, typical of high-cycle fatigue propagation were observed. Near the fatigue origin, no surface damage was observed, and no material anomalies were visible on the fracture surface.
Quoted verbatim from the NTSB record.
Other Air Tractor AT-802F accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 15 Jul 2022 | Air Tractor AT-802F | Vila Nova de Foz Côa-Guarda, Portugal | - | Fatal | 1 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 14 Apr 2000 | Air Tractor AT-401 | Acequia, Idaho, United States | Mallard, Alma D. | Minor injuries | - |
| 25 Jul 2000 | Cessna TU-206G | Pistol Creek, Idaho, United States | - | Fatal | 1 |
| 22 Jun 2000 | Cessna 172M | Wallace, Idaho, United States | Action Flying Service | No injuries | - |
| 21 Sep 2000 | Bell 206-L4 | Atlanta, Idaho, United States | US Forest Service | No injuries | - |
| 10 Nov 2000 | Cessna 425 | Idaho Falls, Idaho, United States | Aerohawk Aviation | Fatal | 2 |
| 11 Jul 2000 | Wsk Pzl Mielec M-18 DROMADER | Burley, Idaho, United States | A-1 Aviation | Minor injuries | - |