Air Tractor AT-301 N4326S
17 July 1995 · Roberts, Idaho, United States · No injuries
Summary
On 17 July 1995 at about 14:15 local time, a Air Tractor AT-301 registered N4326S was involved in an accident near Roberts, 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 14:15
- Classification
- Accident
- Location
- Roberts, Idaho, United States
- Coordinates
- 43.7302, -112.2609
- Aircraft
- Air Tractor AT-301
- Registration
- N4326S
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Positioning
- Phase of flight
- Not recorded
- Route
- Unknown → Rigby
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA95LA154
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
A LOSS OF ENGINE POWER DUE TO THE SEPARATION OF THE NUMBER 3 CYLINDER EXHAUST VALVE ROCKER ARM SHAFT FROM THE CYLINDER HEAD, WHICH DISABLED MOVEMENT OF THE EXHAUST VALVE. A FACTOR WAS THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE PILOT REPORTED THAT SHORTLY AFTER TAKEOFF, AT 40 FEET ABOVE GROUND LEVEL, THE ENGINE LOST POWER AND BEGAN BACKFIRING. THE PILOT MADE A FORCED LANDING IN A BARLEY FIELD WITH 3-FOOT-TALL CROPS, AND THE AIRPLANE CARTWHEELED. POSTACCIDENT EXAMINATION OF THE ENGINE REVEALED THAT THE EXHAUST VALVE ROCKER ARM HOUSING ON THE NUMBER 3 CYLINDER SEPARATED, DISABLING THE NUMBER 3 CYLINDER EXHAUST VALVE.
Quoted verbatim from the NTSB record.
Other Air Tractor AT-301 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 16 Sep 1995 | Air Tractor AT-301 | Plains, Georgia, United States | Gosa's Aerial AG | Minor injuries | - |
| 21 Mar 1995 | Air Tractor AT-301 | Meade, Kansas, United States | - | Fatal | 1 |
| 24 Jul 1995 | Air Tractor AT-301 | Havre, Montana, United States | - | No injuries | - |
| 11 Aug 1995 | Air Tractor AT-301 | Cannon Afb, New Mexico, United States | - | No injuries | - |
| 22 Aug 1995 | Air Tractor AT-301 | Dalhart, Texas, United States | - | No injuries | - |
| 11 Jun 1995 | Air Tractor AT-301 | Hoxie, Kansas, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 2 Jul 1995 | Cessna 172L | Stanley, Idaho, United States | - | No injuries | - |
| 8 Jul 1995 | Grumman G-164A | Burley, Idaho, United States | - | No injuries | - |
| 6 Jul 1995 | Piper PA-30 | Island Park, Idaho, United States | Paul K. Sharp | No injuries | - |
| 12 Jul 1995 | Mooney M20G | Rigby, Idaho, United States | Ridgel, Larry E. | No injuries | - |
| 11 Jul 1995 | Piper PA-18-150 | McCall, Idaho, United States | - | No injuries | - |
| 15 Jul 1995 | Edwin J Estenson RV-4 | Elk River, Idaho, United States | - | No injuries | - |