# NTSB investigations: Air Tractor AT-301: Loss of engine power(total) - mech failure/malf NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB FTW02LA030](https://openairdocs.org/ntsb/FTW02LA030.md): Air Tractor AT-301 · Anton, TX · Accident · No injuries · Limited investigation · Final report · Nov 7, 2001 · N2316X · Substantial damage > The total loss of engine power while maneuvering due to a cracked cylinder, which resulted in a forced landing. A factor was lack of suitable terrain for the forced landing. - [NTSB FTW00LA168](https://openairdocs.org/ntsb/FTW00LA168.md): Air Tractor AT-301 · Garwood, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 2, 2000 · N8886S · Substantial damage > the loss of engine power in cruise flight as a result of the failure of the right magneto. A contributing factor was the lack of suitable terrain for the forced landing. - [NTSB FTW00LA159](https://openairdocs.org/ntsb/FTW00LA159.md): Air Tractor AT-301 · Garwood, TX · Accident · Minor injuries · Limited investigation · Final report · May 30, 2000 · N8594S · Substantial damage > The failure of the supercharger seal resulting in the loss of engine power. A factor was the lack of suitable terrain for the forced landing. - [NTSB LAX00LA087](https://openairdocs.org/ntsb/LAX00LA087.md): Air Tractor AT-301 · Brawley, CA · Accident · Serious injuries · Limited investigation · Final report · Feb 2, 2000 · N23043 · Destroyed > Failure of the engine due to improper installation of the intake and exhaust push rods (components were switched) by unknown maintenance personnel. - [NTSB LAX98LA090](https://openairdocs.org/ntsb/LAX98LA090.md): Air Tractor AT-301 · Wasco, CA · Accident · No injuries · Limited investigation · Final report · Feb 18, 1998 · N3656C · Substantial damage > The pilot overboosting the engine on takeoff which resulted in a cracked cylinder and subsequent loss of engine power. - [NTSB FTW96LA219](https://openairdocs.org/ntsb/FTW96LA219.md): Air Tractor AT-301 · Griffithville, AR · Accident · No injuries · Limited investigation · Final report · May 18, 1996 · N4424S · Destroyed > loss of engine oil (leak) for an undetermined reason, which resulted in oil starvation and a loss of engine power; and failure of the pilot to maintain airspeed during the emergency descent/landing phase, which resulted in an inadvertent stall and subsequent… - [NTSB ATL95LA169](https://openairdocs.org/ntsb/ATL95LA169.md): Air Tractor AT-301 · Plains, GA · Accident · Minor injuries · Limited investigation · Final report · Sep 16, 1995 · N2362D · Substantial damage > Failure of the number four cylinder rocker arm housing and pin, which resulted in a closed exhaust valve and loss of engine power. - [NTSB SEA95LA161](https://openairdocs.org/ntsb/SEA95LA161.md): Air Tractor AT-301 · Havre, MT · Accident · No injuries · Limited investigation · Final report · Jul 24, 1995 · N3660U · Substantial damage > the loss of power due to a failure of the cylinder head exhaust valve rocker box. The tall crop encountered during the forced landing is a factor. - [NTSB CHI95LA198](https://openairdocs.org/ntsb/CHI95LA198.md): Air Tractor AT-301 · Hoxie, KS · Accident · No injuries · Limited investigation · Final report · Jun 11, 1995 · N23477 · Substantial damage > the loss of engine power due to the loose nut on the adjustment screw and the jammed exhaust valve on the number three cylinder. A factor in the accident was the ditch. - [NTSB FTW95LA213](https://openairdocs.org/ntsb/FTW95LA213.md): Air Tractor AT-301 · Caldwell, AR · Accident · No injuries · Limited investigation · Final report · May 19, 1995 · N3655Z · Substantial damage > The loss of power due to a crack in the #4 cylinder. Factors were the lack of suitable terrain for the forced landing and proper touchdown point not possible. - [NTSB ATL94LA128](https://openairdocs.org/ntsb/ATL94LA128.md): Air Tractor AT-301 · Smithville, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1994 · N3649B · Destroyed > The failure of # 2 cylinder head. - [NTSB CHI92DTG05](https://openairdocs.org/ntsb/CHI92DTG05.md): Air Tractor AT-301 · Alice, ND · Accident · Minor injuries · Final report · Sep 10, 1992 · N8823S · Substantial damage > Complete loss of engine power as a result of the partial failure of four pistons. - [NTSB FTW92DPG05](https://openairdocs.org/ntsb/FTW92DPG05.md): Air Tractor AT-301 · Cotton Plant, AR · Accident · Minor injuries · Final report · Jul 7, 1992 · N3650N · Substantial damage > The loss of engine power. A factor was the unsuitable terrain. - [NTSB ATL91LA059](https://openairdocs.org/ntsb/ATL91LA059.md): Air Tractor AT-301 · Pavo, GA · Accident · No injuries · Limited investigation · Final report · Feb 18, 1991 · N8770S · Substantial damage > The failure of the no. 2 exhaust valve and cylinder head, which resulted in a total loss of engine power. A factor in the accident was the collision with a road sign during the forced landing. - [NTSB FTW90DPG08](https://openairdocs.org/ntsb/FTW90DPG08.md): Air Tractor AT-301 · Corning, AR · Accident · Serious injuries · Final report · Aug 14, 1990 · N4433S · Substantial damage > Blockage of the carburetor Air intake by a collapsed Air induction hose due to improper maintenance by an unknown party. - [NTSB LAX88DVG07](https://openairdocs.org/ntsb/LAX88DVG07.md): Snow AT-301 · Davis, CA · Accident · No injuries · Final report · Jul 2, 1988 · N5224S · Substantial damage > At the end of an aerial application flight, en route to home base, the engine quit. The pilot made an emergency landing in a field, where during the landing roll the airplane collided with a bale of hay and nosed over. Inspection of the engine revealed that… - [NTSB MIA87LA244](https://openairdocs.org/ntsb/MIA87LA244.md): Air Tractor AT301 · Belle Glade, FL · Accident · No injuries · Limited investigation · Final report · Sep 11, 1987 · N23600 · Substantial damage > The plt stated that he was spraying water to clean out his hopper tank. During approach to land the eng quit. Unable to reach the airstrip the plt landed on a road. On landing rollout on the road he struck a hidden 55 gallon drum with the right wing tip, spun… - [NTSB DEN87LA084](https://openairdocs.org/ntsb/DEN87LA084.md): Air Tractor AT-301 · Conrad, MT · Accident · No injuries · Limited investigation · Final report · Apr 5, 1987 · N23069 · Substantial damage > An ag plt was returning from an aerial application. Six miles from the destination arpt the engine quit. The plt attempted to land on a road but the acft struck the edge of a pit, spun across the road and came to rest facing 180 degrees from the original… - [NTSB FTW87DPJ02](https://openairdocs.org/ntsb/FTW87DPJ02.md): Air Tractor AT-302 · Colony, OK · Accident · Serious injuries · Final report · Feb 11, 1987 · N8864S · Substantial damage > During a downwind swath run the number one compressor bearing failed in the ltp 101-600-1A engine which resulted in the engine failing completely. During an attempt to turn into the wind for an emergency landing the left wing tip struck the ground and the… - [NTSB CHI85LA283](https://openairdocs.org/ntsb/CHI85LA283.md): Air Tractor AT301 · Roseau, MN · Accident · No injuries · Limited investigation · Final report · Jul 10, 1985 · N23702 · Substantial damage > The aircraft had been airborne about 15 min engaged in ag spray operations when the pilot described hearing a loud band. Engine power decreased to idle. Pilot ld in soft soil and nosed over inverted. Exam disclosed #2 piston had failed. - [NTSB DEN85LA161](https://openairdocs.org/ntsb/DEN85LA161.md): Air Tractor AT-301 · Clovis, NM · Accident · No injuries · Limited investigation · Final report · Jun 17, 1985 · N2312U · Substantial damage > As the plt was pulling up over a power line at the end of a spray run, the eng lost power & smoke began coming from the right side of the eng. The plt turned to land in a field, but was unable to align the acft with forrows. During a forced landing, the acft… - [NTSB FTW85LA017](https://openairdocs.org/ntsb/FTW85LA017.md): Air Tractor AT-301 · Seminole, TX · Accident · No injuries · Limited investigation · Final report · Oct 16, 1984 · N3164Y · Substantial damage > The plt reported that while on a local flt the engine 'blew up' & he made an emergency landing. He stated that the windshield was covered with oil & he could not see to flare the acft & landed hard. Inspection revealed a failure of the #4 rod at the master… - [NTSB MKC84LA260](https://openairdocs.org/ntsb/MKC84LA260.md): Air Tractor AT-301 · Dexter, MO · Accident · Minor injuries · Limited investigation · Final report · Aug 23, 1984 · N31623 · Substantial damage > The engine on the ag-plane lost power during takeoff and the plt began dumping his load as he made a forced landing. Thelanding area available was a flooded rice levee. The acft was landed tailwheel first but when the main gear dug in, the acft nose over.… - [NTSB ATL83LA225](https://openairdocs.org/ntsb/ATL83LA225.md): Air Tractor AT-301 · Fort Valley, GA · Accident · Minor injuries · Limited investigation · Final report · Jun 9, 1983 · N5071S · Substantial damage > The eng quit at 200 ft AGL as the plt was returning to a strip. A forced landing was made in a wheat field & the acft rolled through a narrow tree line. The carb float was found cracked & leaking. - [NTSB FTW83LA166](https://openairdocs.org/ntsb/FTW83LA166.md): Air Tractor AT-301 · Newellton, LA · Accident · No injuries · Limited investigation · Final report · Mar 24, 1983 · N3652A · Substantial damage > Aprx 1 minute after takeoff the acft engine failed. During the forced landing, the acft flipped inverted damaging one wing tip and the vertical stabalizer. Post crash inspection revealed a crack in the number 7 cylinder, from spark plug to spark plug, which… - [NTSB FTW82DA350](https://openairdocs.org/ntsb/FTW82DA350.md): Air Tractor AT-301 · Winnesboro, LA · Accident · No injuries · Final report · Aug 26, 1982 · N4342S · Destroyed > The pilot was circling the field during alignment for his initial swath run when the aircraft engine failed. During the forced landing the aircraft nosed over and the pilot exited the aircraft without turning off any switches. He stated that fuel was leaking… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0390103', '0390105') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 351)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=0390103&occurrence=351 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.