NTSB investigations: Pratt & Whitney R1340 series
55 cases on aircraft whose registry engine model is Pratt & Whitney R1340 series, where the first occurrence was “Loss of engine power(partial) - mech failure/malf”. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1982 | 1 |
|---|---|
| 1983 | 1 |
| 1984 | 7 |
| 1985 | 4 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 3 |
| 1990 | 5 |
| 1991 | 1 |
| 1992 | 1 |
| 1993 | 6 |
| 1994 | 2 |
| 1995 | 2 |
| 1996 | 3 |
| 1997 | 3 |
| 1998 | 2 |
| 2000 | 2 |
| 2001 | 2 |
| 2003 | 1 |
| 2004 | 2 |
| 2005 | 1 |
| 2007 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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\" = 352))
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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" = 352))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB DEN07LA138Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Alamosa, COThe failure of the number one cylinder due to fatigue. Contributing to the accident was the pilot's diminished visual lookout due to the oil covered windscreen.NTSB DFW05CA186Accident · Minor injuriesData collectionFinal reportGrumman-Schweizer G-164A · Tallulah, LAThe partial loss of engine power as result of the fracture of the number five-cylinder exhaust valve rocker arm mounting boss. A contributing factor was the lack of suitable terrain for the forced landing.NTSB FTW04LA176Accident · Minor injuriesLimited investigationFinal reportRockwell S-2R · Jonesville, LAThe pilot's failure to maintain clearance with the power lines.NTSB LAX04LA267Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Richvale, CAthe loss of engine power during takeoff due to the engine's deteriorated fuel control unit's inner drive shaft bearing. The reason for the bearing's deteriorated condition could not be determined.NTSB NYC03LA168Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Rhinebeck, NYA loss of engine power due to a failure of the number eight cylinder.NTSB ANC01LA138Accident · Minor injuriesLimited investigationFinal reportde Havilland DHC-3 · Cordova, AKThe loss of engine power during cruise due to the fracture of an engine cylinder exhaust valve.NTSB CHI01LA229Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164A · Dodge Center, MNThe pilot not maintaining directional control on the ground during the takeoff roll. Factors relating to this accident were the total failure of the propeller governor and the corn crop.NTSB LAX00LA261Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Gridley, CAA partial loss of engine power due to the failure of an exhaust valve during an aerial application flight.NTSB FTW00LA097Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164A · Gillett, ARThe cracked #8 cylinder resulting in failure of the cylinder. A factor was the plowed/furrowed terrain.NTSB ATL98LA115Accident · No injuriesLimited investigationFinal reportSchweizer G164B · Newton, MSThe erosion of the compressor impeller and the unsecured fuel control unit resulted in the loss of engine power during the initial climb.NTSB FTW98LA259Accident · No injuriesLimited investigationFinal reportAyres S2R · Watson, ARThe partial loss of engine power due to the disconnection of the propeller governor control as a result of the stripped threads on the propeller governor control push-pull rod. A factor was the lack of suitable terrain for the forced landing.NTSB ATL97LA127Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Clewiston, FLThe crack in the #8 cylinder head which led to the loss of power. A factor was the soft terrain.NTSB FTW97LA322Accident · Serious injuriesLimited investigationFinal reportRockwell S-2R · Columbus, NMa loss of engine power due to failure of an exhaust side rocker box and valve mechanism, and pilot incapacitation due to loss of consciousness after being struck in the head by parts separating from the engine.NTSB MIA97LA190Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Edwards, MSfailure of the distributor drive gear in the right magneto, resulting in loss of engine power and a forced landing. The lack of suitable terrain for a forced landing was a related factor.NTSB FTW96LA388Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Ferriday, LAThe partial loss of engine power due to a cracked cylinder head. Factors were the oil leak which restricted the pilot's visual lookout and the lack of suitable terrain for the forced landing.NTSB LAX96LA299Accident · Minor injuriesLimited investigationFinal reportGrumman-Schweizer G-164A · Caruthers, CAthe loss of engine power due to the failure of a cylinder. The road's soft surface was a factor.NTSB NYC96LA105Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164A · Vineland, NJfailure of the number 8 cylinder, which resulted in loss of engine power, a forced landing in soft terrain, and subsequent nose over of the airplane.NTSB FTW95LA301Accident · No injuriesLimited investigationFinal reportAir Tractor AT-401 · Cash, AREngine power loss due to partial failure of one magneto combined with total failure of the other magneto. A factor was the lack of suitable terrain for a forced landing.NTSB FTW95LA282Accident · No injuriesLimited investigationFinal reportAero Commander S2R · Newport, ARA disconnected throttle push pull rod, due to inadequate maintenance. A factor relating to the accident was: the lack of suitable terrain for the forced landing.NTSB FTW94LA238Accident · Serious injuriesLimited investigationFinal reportRockwell S-2R · Winchester, ARThe loss of power due to the number one cylinder head cracking. A factor was the lack of suitable terrain for the forced landing.NTSB FTW94LA145Accident · Serious injuriesLimited investigationFinal reportGrumman G-164A · El Campo, TXThe partial loss of engine power due to one magneto being weak and the other magneto arcing inside its case. A factor was the lack of suitable terrain for the forced landing.NTSB ATL93LA157Accident · No injuriesLimited investigationFinal reportAir Tractor AT301 · Deatsville, ALWas a crack in no.3 cylinder head which resulted in the loss of engine power.NTSB LAX93LA327Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Dos Palos, CAThe failure of the master rod which resulted in a complete loss of engine power and subsequent forced landing. The irrigation ditch was a factor in this accident.NTSB FTW93LA239Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164A · Garwood, TXThe partial power loss for undetermined reasons. A factor was the lack of suitable terrain onto which a forced landing could be executed.NTSB BFO93LA142Accident · No injuriesLimited investigationFinal reportNorth American AT-6 · Matawan, NJThe water collection in the ignition harness which rendered the lower cylinder spark plugs inoperative resulting in partial power loss.NTSB MIA93LA104Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-401 · Fort Pierce, FLFailure of the no. 2 cylinder in fatigue for undetermined reasons, over unsuitable terrain. The lack of suitale terrain for the forced landing was a factor.NTSB SEA93LA078Accident · No injuriesLimited investigationFinal reportSchweizer G-164B-600 · Quincy, WAUnsuitable terrain encountered during a forced landing after an engine cylinder assembly had separated. Factors include a snowbank.NTSB MIA92LA160Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Redwood, MSImproper maintenance of the airplane by an unknown person.NTSB MIA91LA158Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · High Springs, FLLoss of engine power due to disintegration of the impeller caused by a worn impeller bearing.NTSB FTW90DPG13Accident · No injuriesFinal reportGrumman G-164A · Luxora, ARA partial power loss due to failure of the number five connecting rod. A factor was the soft terrain in which the forced landing was made.NTSB ANC90LA103Accident · Minor injuriesLimited investigationFinal reportDe Havilland DHC-3 · Beaver Village, AKMechanical failure of an exhaust rocker arm.NTSB MKC90LA128Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Ulysses, KSFailure of the powerplant cylinder and stall/mush encountered by the pilot in command.NTSB FTW90DRA05Accident · No injuriesFinal reportGrumman 164-B · Garwood, TXThe power loss due to super charger impeller failure.NTSB FTW90DRD07Accident · No injuriesFinal reportGrumman G-164A · Ville Platte, LAPartial loss of engine power due to a cracked number four cylinder intake rocker box housing. The lack of a suitable forced landing site was a related factor.NTSB LAX89DVG07Accident · No injuriesFinal reportSchweizer G-164B · Willows, CAFailure of the connecting rod on #1 cylinder of the aircraft powerplant.NTSB SEA89LA071Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Grangeville, IDA partial power loss due to a blower failure. A factor related to the accident was the soft field condition.NTSB FTW89DPJ03Accident · No injuriesFinal reportAir Tractor 301 · Jefferson, OKLoss of engine power, due to a cracked number 4 cylinder. A factor related to the accident was: the terrace (dirt bank) in the emergency landing area.NTSB ATL88DKG15Accident · Minor injuriesFinal reportRockwell S2R · Pelham, GAThe crop duster had completed the third swath run of the morning when the engine began to lose power. The plt released the contents of the hopper and made a forced landing in a soybean field. During the landing roll, the airplane nosed over and a ground fire…NTSB MKC88LA161Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Gillett, ARWhile en route to engage in an aerial application operation, the plt said the engine began to misfire and cut out. Unable to correct the malfunction, the plt dumped his chemical load and began returning to the departure airstrip. En route, he felt he would…NTSB MIA88LA147Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Hastings, FLWhile on an aerial application flt shortly after takeoff, the eng lost power. The plt then dumped the load of fertilizer & landed the acft in a field. After touchdown it nosed over & came to rest. Examination of the eng revealed that the no. four cylinder…NTSB LAX87DJA09Accident · No injuriesFinal reportEmair MA-1-B · Paauilo, HIDuring an aerial application flt, just after take off, the plt noted that the engine oil temp was high and that blue smoke was coming from the engine. Unable to land at the airport, the acft collided with the terrain short of the runway and nosed over.…NTSB BFO86FID06Accident · Minor injuriesFinal reportAyres S2R · Virginia Beach, VAThe acft was ditched after a loss of power during takeoff. Plt was unable to maintain alt & dumped liquid fertilizer load prior to landing. After ditching in a shallow canal the acft nosed over. Post accident investigation revealed a cracked cylinder in the…NTSB CHI85LA373Accident · No injuriesLimited investigationFinal reportSchweizer G-164A · Irwin, OHAt an alt of aprx 20 ft AGL after takeoff, the #1 cylinder failed. A straight ahead landing was made in a corn field during which the acft was destroyed. The eng had under gone a major overhaul 197 hrs prior to this accident.NTSB CHI85LA360Accident · No injuriesLimited investigationFinal reportSchweizer G164A "450" · Constantine, MIThe acft nosed over during a forced landing in a corn fld. The plt stated that at 30 ft AGL during his second swath run the eng backfired and lost pwr. He attempted to dump the load however, the acft continued to loose alt and the forced landing resulted.…NTSB FTW85LA294Accident · No injuriesLimited investigationFinal reportNorth American AT-6 · Port Isabel, TXThe acft was substantially damaged when it undershot the runway and cartwheeled during an emergency landing following an engine failure in the traffic pattern. The plt reported that initial examination of the engine revealed that initial examination of the…NTSB LAX85LA250Accident · No injuriesLimited investigationFinal reportRockwell S-2R · Colusa, CADuring an ag flight, the eng began to severly backfire & lose power. The plt attempted to make a forced ldg on the nearby duster airstrip but had insufficient altitude to be properly aligned with the rwy. The acft overan the edge of the end disclosed that its…NTSB SEA84LA199Accident · No injuriesLimited investigationFinal reportRockwell Thrush SR2 · Nampa, IDThe acft began to lose power while engaged in aerial application so the plt dumped his load and headed for the airstrip. Enroute the power deteriorated so the plt elected to land. Cutting the mixture gave the engine a surge which caused an overshoot into…NTSB MKC84LA250Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Swifton, ARDuring a swath run the #9 cylinder on the radial engine separated. A forced landing was made during which the acft landed in a levee and nosed over.NTSB MKC84LA211Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Roe, ARAs a result of a supercharger failure, a partial power loss was experienced during a swath run. During the landing roll after a forced landing, the acft nosed over & came to rest inverted. An eng teardown revealed that both supercharger bearings had failed…NTSB MKC84LA217Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Osceola, ARThe acft crashed into a levee in a rice field after losing engine power during a spray operation turn-around. The enginedid not quit entirely but lost enough power so that flt was not maintained. An inspection of the engine revealed a broked connecting rod.