# NTSB investigations: Pratt & Whitney R1340 series: Airframe/component/system failure/malfunction 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 CHI07LA173](https://openairdocs.org/ntsb/CHI07LA173.md): Air Tractor AT-301 · Fergus Falls, MN · Accident · Minor injuries · Limited investigation · Final report · Jun 20, 2007 · N23667 · Substantial damage > The propeller blade failure during climb due to a fatigue crack. The oil leak that obstructed the pilot's vision was a factor in the accident. - [NTSB DFW05LA147](https://openairdocs.org/ntsb/DFW05LA147.md): Grumman G-164B · Lake Charles, LA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2005 · N6832K · Substantial damage > The failure of the propeller governor which resulted in a forced landing. A contributing factor was the transmission wire. - [NTSB ATL05FA079](https://openairdocs.org/ntsb/ATL05FA079.md): North American SNJ-6 · Kissimmee, FL · Accident · 2 fatal · Field investigation · Final report · May 9, 2005 · N453WA · Substantial damage > The failure of the outboard right-wing lower attachment bracket due to fatigue cracking and the subsequent in-flight separation of the right wing assembly. - [NTSB FTW04LA164](https://openairdocs.org/ntsb/FTW04LA164.md): Grumman G-164A · Garwood, TX · Accident · No injuries · Limited investigation · Final report · Jun 17, 2004 · N6567 · Substantial damage > The separation of the right main landing gear wheel and axle during take-off. Contributing factors were the fatigue of the bolts on the right main landing gear and the rough and uneven terrain. - [NTSB FTW04LA159](https://openairdocs.org/ntsb/FTW04LA159.md): Ayres S-2R · Eagle Lake, TX · Accident · No injuries · Limited investigation · Final report · Jun 11, 2004 · N3104S · Substantial damage > The partial collapse of the left main landing gear as a result of a failure of the fuselage structure due to corrosion. - [NTSB FTW03CA180](https://openairdocs.org/ntsb/FTW03CA180.md): Schweizer G-164B · Vega, TX · Accident · No injuries · Data collection · Final report · Jun 28, 2003 · N7501H · Substantial damage > The failure of the left brake for undetermined reasons. - [NTSB ANC03LA021](https://openairdocs.org/ntsb/ANC03LA021.md): de Havilland DHC-3 · Nikolai, AK · Accident · No injuries · Limited investigation · Final report · Dec 28, 2002 · N3904 · Substantial damage > An improper and undocumented major repair of the elevator torque tube support assembly by an unknown person, which resulted in an in-flight disconnection of the airplane's right elevator, and a jammed rudder. A factor associated with the accident is the… - [NTSB DEN03LA016](https://openairdocs.org/ntsb/DEN03LA016.md): North American T-6G · Elbert, CO · Accident · No injuries · Limited investigation · Final report · Nov 17, 2002 · N7197C · Substantial damage > overload failure of the cable between the left rudder pedal and the tail wheel, rendering directional control impossible and resulting in an inadvertent ground loop and nose over. Contributing factors were the crosswind and the soft, wet ground. - [NTSB LAX02LA257](https://openairdocs.org/ntsb/LAX02LA257.md): Air Tractor AT-301 · Dos Palos, CA · Accident · No injuries · Limited investigation · Final report · Aug 22, 2002 · N8793S · Substantial damage > the failure of the propeller blade due to fatigue. Factors in the accident were the inadequate maintenance-repair of the blade, and, inadequate pilot preflight inspections. - [NTSB LAX02LA216](https://openairdocs.org/ntsb/LAX02LA216.md): Grumman-Schweizer G-164B · Sacramento, CA · Accident · No injuries · Limited investigation · Final report · Jul 6, 2002 · N3631B · Substantial damage > Propeller blade failure due to fatigue. A contributing factor was the rising embankment. - [NTSB SEA00LA059](https://openairdocs.org/ntsb/SEA00LA059.md): Aero Commander S2R · Odessa, WA · Accident · No injuries · Limited investigation · Final report · Mar 31, 2000 · N3662X · Substantial damage > Disintegration of a lining of the right brake and subsequent lodging of brake lining debris between the brake housing and brake disc, resulting in seizure of the right brake. A factor was that directional control was not possible. - [NTSB FTW00LA012](https://openairdocs.org/ntsb/FTW00LA012.md): Air Tractor AT-301 · Olton, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1999 · N23930 · Substantial damage > The inflight separation of the propeller blade due to damage from a wire strike. A factor was the lack of suitable terrain for the forced landing. - [NTSB LAX99LA040](https://openairdocs.org/ntsb/LAX99LA040.md): Grumman-Schweizer G-164C · Oroville, CA · Accident · No injuries · Limited investigation · Final report · Nov 25, 1998 · N6596K · Substantial damage > The pilot's decision to attempt readjustment of the rudder pedal in-flight. - [NTSB SEA98LA125](https://openairdocs.org/ntsb/SEA98LA125.md): Rockwell S-2R · Pasco, WA · Accident · No injuries · Limited investigation · Final report · Jul 9, 1998 · N4996X · Substantial damage > Separation of the throttle linkage which resulted in the loss of power. Factors include worn throttle linkage parts and the furrows in the plowed field which was the available field for the forced landing. - [NTSB SEA98LA106](https://openairdocs.org/ntsb/SEA98LA106.md): Schweizer G-164B · Oakdale, WA · Accident · No injuries · Limited investigation · Final report · Jun 27, 1998 · N7502C · Substantial damage > A fatigue failure of the number three cylinder exhaust rocker box assembly, compromising the ability of the exhaust valve to operate. Factors include a ditch at the end of the runway. - [NTSB FTW98LA252](https://openairdocs.org/ntsb/FTW98LA252.md): Grumman-Schweizer G-164B · Coy, AR · Accident · No injuries · Limited investigation · Final report · Jun 1, 1998 · N943QC · Substantial damage > failure of the left main tire, which resulted in the pilot's inability to maintain directional control of the airplane during the landing roll. - [NTSB CHI96LA217](https://openairdocs.org/ntsb/CHI96LA217.md): Air Tractor AT-301 · Ness City, KS · Accident · No injuries · Limited investigation · Final report · Jun 26, 1996 · N8883S · Substantial damage > the failure of a counterweight bolt in the propeller for reasons undetermined. Factors were the wet landing area and the encounter with unsuitable terrain during the forced landing. - [NTSB MIA95LA015](https://openairdocs.org/ntsb/MIA95LA015.md): Rockwell S-2R · Madison, MS · Accident · No injuries · Limited investigation · Final report · Nov 1, 1994 · N8456V · Destroyed > The pilots improper use of brakes during a precautionary landing. - [NTSB ATL95LA004](https://openairdocs.org/ntsb/ATL95LA004.md): Aero Commander S2R · Ashburn, GA · Accident · No injuries · Limited investigation · Final report · Oct 5, 1994 · N8971Q · Substantial damage > The failure of a blade counterweight bearing shaft, allowing one propeller blade to go to high pitch. - [NTSB MIA92LA179](https://openairdocs.org/ntsb/MIA92LA179.md): Air Tractor AT-301 · Satartia, MS · Accident · No injuries · Limited investigation · Final report · Sep 10, 1992 · N4333S · Substantial damage > Failure of the brake system due to installation of a bogus part by an unknown person. Directional control by the pilot in command was not possible. - [NTSB FTW91DRD07](https://openairdocs.org/ntsb/FTW91DRD07.md): Grumman G-164B · Donaldsonville, LA · Accident · No injuries · Final report · Jul 28, 1991 · N573AF · Substantial damage > The mechanical failure of the propeller blade pitch positioning bolt. A factor was the lack of suitable terrain available for the forced landing. - [NTSB FTW90DRD04](https://openairdocs.org/ntsb/FTW90DRD04.md): Grumman G-164B · Fenton, LA · Accident · No injuries · Final report · Apr 3, 1990 · N6714K · Destroyed > Failure of the elevator control rod end bearing. - [NTSB ATL90LA078](https://openairdocs.org/ntsb/ATL90LA078.md): North American T-6 G · Albany, GA · Accident · No injuries · Limited investigation · Final report · Mar 9, 1990 · N96143 · Substantial damage > A locked brake which prevented the pilot from maintaining directional control during the landing roll. The brake material expanded after becoming water soaked while taxiing. - [NTSB MKC89LA150](https://openairdocs.org/ntsb/MKC89LA150.md): Aero Commander S2R · Jonesboro, AR · Accident · No injuries · Limited investigation · Final report · Jul 3, 1989 · N8976Q · Destroyed > The pilot's encounter with unsuitable terrain during a forced landing made necessary by the separation of three feet of one of the propeller blades. - [NTSB SEA89LA096](https://openairdocs.org/ntsb/SEA89LA096.md): Schweizer G-164 · Hermiston, OR · Accident · No injuries · Limited investigation · Final report · May 26, 1989 · N8768H · Substantial damage > Failure and separation of the left main landing wheel. - [NTSB MKC88LA122](https://openairdocs.org/ntsb/MKC88LA122.md): Rockwell S2R · Brinkley, AR · Accident · No injuries · Limited investigation · Final report · Jul 23, 1988 · N4080X · Substantial damage > During the take-off roll for an aerial application operation, the pilot said he lost his left wheel braking capability. He continued the take-off, flew to the farm field to be treated, applied the load, then returned to a near by alternate landing strip… - [NTSB FTW88DRD06](https://openairdocs.org/ntsb/FTW88DRD06.md): Grumman G-164A · Abbeville, LA · Accident · No injuries · Final report · May 28, 1988 · N7203 · Substantial damage > The ag plt had finished spreading his load of chemicals & was landing when the left brake failed to operate. He started to apply pwr for a go-around, but the eng coughed & did not respond properly. The plt then closed the throttle & appliedrgt brake to avoid… - [NTSB ATL88LA129](https://openairdocs.org/ntsb/ATL88LA129.md): North American T-6G · Stockbridge, GA · Accident · No injuries · Limited investigation · Final report · Apr 2, 1988 · N9871C · Substantial damage > The airplane landed with the left wheel locked, and subsequently nosed over during the ldg roll. Post-crash exam revealed that the left wheel could not be rotated in the fwd direction by hand, and that it could be rotated aft by hand only with considerable… - [NTSB MKC87DPG03](https://openairdocs.org/ntsb/MKC87DPG03.md): Air Tractor AT-301 · Tillar, AR · Accident · Serious injuries · Final report · Aug 27, 1987 · N3159X · Substantial damage > The pilot stated that the prop RPM became erratic. On approach, the prop ran completely out of control, causing the aircraft to nose down into a plowed field just short of the landing area. The a/c hit on the main landing gear, broke them off, then it nosed… - [NTSB LAX87DJA08](https://openairdocs.org/ntsb/LAX87DJA08.md): Emair MA-1B · Pahala, HI · Accident · No injuries · Final report · Aug 13, 1987 · N9924M · Substantial damage > During an aerial application operation, while taking off, the aircraft veered off the runway and came to rest nose down. Inspection of the landing gear revealed that the left main landing gear scissor bolt broke. - [NTSB MIA87LA209](https://openairdocs.org/ntsb/MIA87LA209.md): Air Tractor AT-301 · Swiftown, MS · Accident · Minor injuries · Limited investigation · Final report · Jul 18, 1987 · N7310N · Substantial damage > While spraying cotton, severe vibration was felt throughout the acft & the plt elected a forced ldg. During the flare, the throttle was advanced to raise the nose, & the plt discovered the eng had totally failed. The acft flipped inverted on touch down. An… - [NTSB FTW87DRD08](https://openairdocs.org/ntsb/FTW87DRD08.md): Grumman G-164A · Lacassine, LA · Accident · No injuries · Final report · Jul 7, 1987 · N9778 · Substantial damage > The pilot stated the aircraft's tail wheel broke during the takeoff roll causing the aircraft to veer to the right. The right wing contacted a small tree and the right main gear wheel dropped into a ditch which was parallel with the runway. Directional… - [NTSB MIA87FA013](https://openairdocs.org/ntsb/MIA87FA013.md): Grumman G-73 · St. Croix · Accident · 1 fatal · Field investigation · Final report · Oct 28, 1986 · N604SS · Substantial damage > The plts lost aileron control shortly after takeoff while in a left turn. The left turning tendencies of the acft could not be corrected and the acft crash landed in the carribean sea. Post crash inspection of the acft revealed the left aileron control cable… - [NTSB FTW86FRG20](https://openairdocs.org/ntsb/FTW86FRG20.md): Air Tractor AT301 · Taylor, TX · Accident · No injuries · Final report · May 21, 1986 · N3168H · Substantial damage > Commercial pilot of an Air Tractor AT301 enroute to base of operations at Taylor, TX executed a forced landing after experiencing severe vibration in the aircraft. Landing was made to a soft field. The aircraft nosed over during landing roll and was… - [NTSB SEA86LA081](https://openairdocs.org/ntsb/SEA86LA081.md): Air Tractor 301 · Prescott, WA · Accident · No injuries · Limited investigation · Final report · Mar 21, 1986 · N5097S · Substantial damage > The brake locking system engaged in flight causing the right brake to lock. The aircraft nosed over on landing where a small fire erupted from fuel spillage onto the hot engine. - [NTSB MKC86LA061](https://openairdocs.org/ntsb/MKC86LA061.md): Schweizer G164-B · Colt, AR · Accident · Minor injuries · Limited investigation · Final report · Feb 17, 1986 · N3630K · Destroyed > This was a new acft which the owner was ferrying from the dealer to his private ag strip. The landing was made to the north on a half mile long grass strip and the wind was calm. The plt reports that the brakes were locked when the acft touched down and the… - [NTSB CHI85FER02](https://openairdocs.org/ntsb/CHI85FER02.md): Grumman 164A · Becker, MN · Accident · No injuries · Final report · Sep 18, 1985 · N48405 · Substantial damage > The plt reported the eng pwr dropped from 2000 to 1550 RPM during the aerial application flt. The plt increased throttleand advanced the prop with no increase in pwr. The acft then settled to ground impact and nosed over. Post accident inspection disclosed… - [NTSB LAX85IA396](https://openairdocs.org/ntsb/LAX85IA396.md): North American SNJ-4 · Reno, NV · Incident · No injuries · Incident investigation · Final report · Sep 12, 1985 · N86WW · Minor damage > The pilot experienced a 'severe vibration' and made an emergency landing during a heat race at the national championship air races. Subsequent examination revealed that a propeller blade pitch change bolt, p/n 53546, had failed, allowing one propeller blade… - [NTSB DEN85LA195](https://openairdocs.org/ntsb/DEN85LA195.md): Schweizer G-164B-600 · Riverton, WY · Accident · No injuries · Limited investigation · Final report · Jul 22, 1985 · N6825K · Substantial damage > The plt was crop spraying a field in a Schweizer ag-cat acft when the left landing wire broke. The plt returned to Riverton, WY. During the landing roll, in attempt to stop the acft as soon as possible, he inadvertently applied the brakes too hard, causing… - [NTSB MIA85IA155](https://openairdocs.org/ntsb/MIA85IA155.md): Grumman G-73-T · St. Croix · Incident · Minor injuries · Incident investigation · Final report · Apr 24, 1985 · N632SS · Minor damage > While on an FAA observed proving flight, water take off, the left propeller electrical terminal failed. The part then penetrated the left forward passenger window and struck the FAA observer causing minor injury. The plastic part failed in over load due to… - [NTSB FTW85LA039](https://openairdocs.org/ntsb/FTW85LA039.md): Air Tractor AT-301 · Mission, TX · Accident · No injuries · Limited investigation · Final report · Nov 8, 1984 · N8523S · Substantial damage > After a loss of oil pressure the acft was landed downwind. During the precautionary landing across plowed furrows, the rt wing caught in the sugar cane crop and the acft turned to the rt, collapsing the left landing gear and damaging the left wing. The plts… - [NTSB DEN84LA224](https://openairdocs.org/ntsb/DEN84LA224.md): Grumman G-164A · Richey, MT · Accident · No injuries · Limited investigation · Final report · Jul 15, 1984 · N6589 · Destroyed > The plt had finished spraying & was proceeding to the glendive arpt. He said that eng or prop began a sudden severe vibration which required the eng to be shut down. An emegency landing was made. The plt stated that the left wing impacted a hill which spun… - [NTSB MKC84LA180](https://openairdocs.org/ntsb/MKC84LA180.md): Rockwell S-2R · Pocahontas, AR · Accident · No injuries · Limited investigation · Final report · Jun 16, 1984 · N4913X · Substantial damage > About 18 inches of one propeller blade separated in flight. The acft began to shake violently and the plt shutdown the engine. The aircraft crashed during the forced lndg. Metallurgical examination revealed features typical of fatique cracking over aprox 2/3… - [NTSB FTW84LA262](https://openairdocs.org/ntsb/FTW84LA262.md): Grumman G-164A · Bell City, LA · Accident · No injuries · Limited investigation · Final report · Jun 1, 1984 · N8661H · Substantial damage > A propeller counterweight bearing shaft failed after takeoff at max gross weight. A vibration occurred & the plt began dumping his load, but he was unable to maintain altitude. The aircraft landed in soft mud and nosed over when it collided with a rice levee… - [NTSB ATL83FKQ03](https://openairdocs.org/ntsb/ATL83FKQ03.md): Air Tractor AT-301 · Redwood, MS · Accident · No injuries · Final report · Aug 25, 1983 · N8511S · Substantial damage > The acft made a forced landing in a soybean field after severe vibration developed during a spraying operation. The pilot stated that the powerplant and flt controls were functioning normally at the time of the accident. An on-scene investigation revealed… - [NTSB FTW83LA239](https://openairdocs.org/ntsb/FTW83LA239.md): Grumman G-164A · Hayes, LA · Accident · No injuries · Limited investigation · Final report · May 17, 1983 · N9805 · Substantial damage > The acft ran off the rt side of the rwy and collided with a dirt embankment drng lndg roll. Brake fluid was found on the l main gear following the accd. Investigation revealed the source of the leak to be a popped o-ring in the brake actuating cylinder. - [NTSB ATL83LA019](https://openairdocs.org/ntsb/ATL83LA019.md): Grumman G-164 · Adel, GA · Accident · No injuries · Limited investigation · Final report · Oct 27, 1982 · N7231 · Destroyed > Following maintenance performed on the aircraft the pilot conducted a check flight. After takeoff the pilot discovered fuel splashing on the windshield and proceeded to abort the takeoff. Upon landing the pilot lost control of the aircraft. The aircraft… - [NTSB LAX82DA127](https://openairdocs.org/ntsb/LAX82DA127.md): Grumman G-164 · Bakersfield, CA · Accident · No injuries · Final report · Apr 7, 1982 · N703Y · Substantial damage > On takeoff roll the right main tire blew causing the aircraft to veer to the right, leave the runway, and nose over in the soft mud. ## 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.engine_model_code IN ('52016') 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" = 130)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52016&occurrence=130 --- 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.