# NTSB investigations: Pratt & Whitney R-1830 series 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. Page 1 of 2 · 70 cases ## Latest cases - [NTSB ANC26LA040](https://openairdocs.org/ntsb/ANC26LA040.md): Douglas DC3C · Anchorage, AK · Accident · No injuries · Class 4 · Limited · Investigation open · May 8, 2026 · N115U · Substantial damage - [NTSB ERA26LA028](https://openairdocs.org/ntsb/ERA26LA028.md): Consolidated Vultee 28-5ACF · Dayton, TN · Accident · No injuries · Class 4 · Limited · Final report · Oct 31, 2025 · N222FT · Substantial damage > The collapse of the left main landing gear due to the fatigue fracture of the lower landing gear actuator bolt. - [NTSB ERA20WA015](https://openairdocs.org/ntsb/ERA20WA015.md): Douglas DC3C S1C3G · Nassau, Bahamas · Accident · Minor injuries · Foreign investigation · Oct 18, 2019 · N437GB · Substantial damage > The government of Bahamas has notified the NTSB of an accident involving a Douglas DC3C S1C3G airplane that occurred on October 18, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Bahamas's investigation under the… - [NTSB WPR18FA201](https://openairdocs.org/ntsb/WPR18FA201.md): Douglas DC3 · Burnet, TX · Accident · Serious injuries · Class 2 · Field · Final report · Jul 21, 2018 · N47HL · Destroyed > The copilot's failure to maintain directional control during the initial takeoff roll and the pilot's failure to adequately monitor the copilot during the takeoff and his delayed remedial action, which resulted in the airplane briefly becoming airborne and… - [NTSB ERA16FA269](https://openairdocs.org/ntsb/ERA16FA269.md): Yakovlev YAK11 · West Mifflin, PA · Accident · 1 fatal · Field investigation · Final report · Jul 25, 2016 · N5940 · Substantial damage > A malfunction of the electrical system, which resulted in an electrical fire in the right wing root of the airplane, which compromised the fuel system and resulted in ignition of fuel. Contributing to the accident was the routing of the electrical wiring near… - [NTSB CEN16CA126](https://openairdocs.org/ntsb/CEN16CA126.md): Nakajima A6M2 Model 21 · Midland, TX · Accident · No injuries · Data collection · Final report · Mar 15, 2016 · N8280K · 2 aircraft · Substantial damage > The Goodyear pilot did not see and avoid the Nakajima ahead on the taxiway. - [NTSB ERA09LA266](https://openairdocs.org/ntsb/ERA09LA266.md): Douglas DC3 · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Apr 26, 2009 · N136FS · Substantial damage > Worn electrical wires and a fuel pressure indicating system hose, which resulted in a ground fire during taxi. - [NTSB MIA06LA125](https://openairdocs.org/ntsb/MIA06LA125.md): Douglas DC-3 · St. Thomas · Accident · Minor injuries · Limited investigation · Final report · Jul 19, 2006 · N782T · Substantial damage > The airplane's inability to maintain altitude for undetermined reasons, following a loss of power from the left engine. - [NTSB ATL01FA040](https://openairdocs.org/ntsb/ATL01FA040.md): Douglas DC-3 · Donalsonville, GA · Accident · No injuries · Field investigation · Final report · Mar 16, 2001 · N842MB · Substantial damage > The failure and separation of No.12 cylinder from the engine case that resulted in an in-flight oil fed fire; and the subsequent separation of the right engine from airframe. - [NTSB ANC01FA033](https://openairdocs.org/ntsb/ANC01FA033.md): Douglas DC-3 · Unalaska, AK · Accident · 2 fatal · Field investigation · Final report · Jan 24, 2001 · N19454 · Destroyed > The airplane flightcrew's failure to maintain adequate distance/altitude from mountainous terrain during a departure climb to cruise flight, and the captain's impairment from drugs. Factors in the accident were dark night conditions, and the first officer's… - [NTSB MIA00RA224](https://openairdocs.org/ntsb/MIA00RA224.md): Douglas DC-3 · Nassau, Bahamas · Accident · 2 fatal · Foreign investigation · Jul 20, 2000 · N54AA - [NTSB MIA99LA248](https://openairdocs.org/ntsb/MIA99LA248.md): Douglas DC3C-S4C4G · Charlotte, NC · Accident · No injuries · Limited investigation · Final report · Jul 22, 1999 · N79017 · Substantial damage > the pilot-in-command did not use the check list which resulted in the right main landing gear collapsing. - [NTSB ANC98LA114](https://openairdocs.org/ntsb/ANC98LA114.md): Douglas DC-3C · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Jul 31, 1998 · N305SF · Substantial damage > The pilot's failure to maintain directional control during landing, and the resulting overload fracture of the tailwheel fork assembly. - [NTSB ANC98LA055](https://openairdocs.org/ntsb/ANC98LA055.md): Douglas DC-3C · Anchorage, AK · Accident · Minor injuries · Limited investigation · Final report · May 24, 1998 · N67588 · Substantial damage > The pilot's inadequate in-flight planning/decision which resulted in fuel exhaustion and subsequent loss of engine power. A related factor was the soft, marshy terrain at the forced landing area. - [NTSB SEA97FA034](https://openairdocs.org/ntsb/SEA97FA034.md): Douglas DC-3C · Boise, ID · Accident · 2 fatal · Field investigation · Final report · Dec 10, 1996 · N75142 · Destroyed > A fire within the right engine compartment of undetermined cause and the pilot-in-command's failure to maintain airspeed above the aircraft's minimum control speed. A factor contributing to the accident was the dark night environmental conditions. - [NTSB ATL97LA012](https://openairdocs.org/ntsb/ATL97LA012.md): Douglas C-47 · Dorado, PR · Accident · Serious injuries · Limited investigation · Final report · Oct 31, 1996 · N37AP · Substantial damage > failure of the #11 cylinder on the right (#2) engine, which resulted in an in-flight fire and loss of power in that engine; and a malfunction/failure of the #2 feathering system, which led to a subsequent forced landing before the flight crew could return to… - [NTSB MIA96WA054](https://openairdocs.org/ntsb/MIA96WA054.md): Douglas DC-3 · Nassau, Bahamas · Accident · No injuries · Foreign investigation · Dec 22, 1995 · N123DZ · Substantial damage - [NTSB MIA95LA040](https://openairdocs.org/ntsb/MIA95LA040.md): Cessna 208B · Memphis, TN · Accident · No injuries · Limited investigation · Final report · Dec 15, 1994 · N927FE · 2 aircraft · Substantial damage > The inability of the pilot of Cessna 208, N927FE to see Douglas DC3, N24320, as he taxied to takeoff due to inoperative tail navigation lights and beacon lights on the DC3 and due to glare on the wet taxiway. - [NTSB MIA94LA003](https://openairdocs.org/ntsb/MIA94LA003.md): Douglas DC-3C · San Juan, PR · Accident · No injuries · Limited investigation · Final report · Oct 7, 1993 · N781T · Substantial damage > Partial failure of a wing rib due to exfoliation corrosion and inadequate inspection of the aircraft by company maintenance personnel. - [NTSB MIA93LA106](https://openairdocs.org/ntsb/MIA93LA106.md): Douglas DC-3C · Zephyrhills, FL · Accident · No injuries · Limited investigation · Final report · Apr 20, 1993 · N8056 · Substantial damage > The pilot-in-command's failure to maintain best single-engine rate-of-climb speed which resulted in a forced landing. A factor which contributed to the accident was a possible exhaust system clamp failure. - [NTSB MIA92IA093](https://openairdocs.org/ntsb/MIA92IA093.md): Douglas DC-3C · San Juan, PR · Incident · No injuries · Incident investigation · Final report · Mar 10, 1992 · N135FS · Minor damage > The pilot-in-command's improper loading of personnel, and improper supervision of the first officer/co-pilot while calculating the center of gravity limits for the flight. This resulted in the forward center of gravity limit being exceeded and subsequent nose… - [NTSB DEN91LA102](https://openairdocs.org/ntsb/DEN91LA102.md): Douglas DC-3C · Albuquerque, NM · Accident · No injuries · Limited investigation · Final report · Jul 20, 1991 · N96H · Substantial damage > The failure of the right main landing gear tire. - [NTSB SEA89FA122](https://openairdocs.org/ntsb/SEA89FA122.md): Douglas DC-3C · Petersburg, AK · Accident · No injuries · Field investigation · Final report · Jun 26, 1989 · N8042X · Substantial damage > The pilot's improper decision to ditch the aircraft when it could have been flown back to the airport using the right seat controls. Contributing factor(s) was: the failure & separation of a portion of the right aileron fabric, and the pilot's excessive force… - [NTSB MIA87IA195](https://openairdocs.org/ntsb/MIA87IA195.md): Douglas DC3A · Hilliard, FL · Incident · No injuries · Incident investigation · Final report · Jun 30, 1987 · N31MS · Minor damage > According to the FAA the pilot stated that just after he rotated for takeoff the acft lost power in the left eng. He then aborted the takeoff, set the acft back on the runway & it slid off the left side into some bushes. The plts did not submit an operator… - [NTSB DEN86LA102](https://openairdocs.org/ntsb/DEN86LA102.md): Douglas C-47 · Steins, NM · Accident · No injuries · Limited investigation · Final report · Mar 23, 1986 · N37AP · Substantial damage > While en route, the left eng of the C-47 lost partial pwr as a result of a cracked cylinder. The crew stated the left eng was shut down and additional pwr was applied to the right eng to compensate for the increasing rate of descent. The crew stated a short… - [NTSB ANC85FA112](https://openairdocs.org/ntsb/ANC85FA112.md): Douglas DC-3 · King Salmon, AK · Accident · No injuries · Field investigation · Final report · Jun 30, 1985 · N168Z · Substantial damage > During an instrument apch, the acft's right eng lost power. The plt moved the right fuel selector to the left main tank & began emergency procedures. Shortly after that, the acft broke out of the overcast & the aircrew saw the arpt. However, the left eng also… - [NTSB MIA84FA256](https://openairdocs.org/ntsb/MIA84FA256.md): Douglas DC3 · Boca Raton, FL · Accident · No injuries · Field investigation · Final report · Sep 18, 1984 · N143D · Substantial damage > Four hours and forty mins after takeoff aprx 6 miles from the dest aprt, both engs stopped running. Attempts to restart the engs were unsuccessful. Thinking they were out of fuel, the crew accomplished a forced landing in a wildlife refuge in 10 ft tall… - [NTSB MIA82DA178](https://openairdocs.org/ntsb/MIA82DA178.md): Douglas C-47 · Charlotte Amali · Accident · No injuries · Final report · Aug 23, 1982 · N87629 · Substantial damage > The pilot reported normal braking pressure failed while taxiing on the ramp. He attempted to steer clear of other aircraft, but collided with two parked DC-3 aircraft. No determination of the nature of the braking problem was made. - [NTSB MIA82FA128](https://openairdocs.org/ntsb/MIA82FA128.md): Douglas DC-3C · St. Petersburg, FL · Accident · Serious injuries · Field investigation · Final report · Jun 6, 1982 · N95C · Destroyed > After a local maintenance flight the crew returned to St. Petersburg to practice full stop landings. Shortly after becoming airborne during the 2nd takeoff, the right eng experienced a power loss. The acft was observed to climb to about 50 ft AGL, then veer… - [NTSB CHI82FEE14](https://openairdocs.org/ntsb/CHI82FEE14.md): Douglas DC-3A · Sandwich, IL · Accident · No injuries · Final report · May 29, 1982 · N129H · Substantial damage > After returning from a parachute jumping flight, the pilot elected to land on the 1800 ft grass runway. A 3000 ft asphalt runway was available, but he had been using the grass runway to avoid wear on the tires. There was a 30 ft powerline at the approach end… - [NTSB MIA82DA046](https://openairdocs.org/ntsb/MIA82DA046.md): Howard 500 · Ft. Lauderdale, FL · Accident · No injuries · Final report · Feb 12, 1982 · N1515V · Substantial damage > The pilot stated that partial power failure of the left engine combined with torque and a crosswind caused a loss of directional control approximately 100 yards into the takeoff roll. - [NTSB ANC81FA074](https://openairdocs.org/ntsb/ANC81FA074.md): Douglas DC-3 · Pilot Point, AK · Accident · 3 fatal · Closed · Jul 1, 1981 · N111ST · Destroyed - [NTSB MIA80FA058](https://openairdocs.org/ntsb/MIA80FA058.md): Douglas C-47B · Dania, FL · Accident · Serious injuries · Closed · Apr 23, 1980 · N709Z · Destroyed - [NTSB MIA79FLD79](https://openairdocs.org/ntsb/MIA79FLD79.md): Douglas DC3-C · Tampa, FL · Accident · No injuries · Closed · Jul 22, 1979 · N77B · Substantial damage - [NTSB MIA79FKG16](https://openairdocs.org/ntsb/MIA79FKG16.md): Douglas DC-3 · Williamson, GA · Accident · No injuries · Closed · Jan 21, 1979 · N133D · Substantial damage - [NTSB MKC79FA007](https://openairdocs.org/ntsb/MKC79FA007.md): Douglas DC-3 · Des Moines, IA · Accident · Serious injuries · Closed · Dec 2, 1978 · N41447 · Substantial damage - [NTSB MIA79DA001](https://openairdocs.org/ntsb/MIA79DA001.md): Douglas DC-3 · Ft Walton Bch, FL · Accident · 1 fatal · Closed · Oct 1, 1978 · N74Z · Destroyed - [NTSB CHI78FA047](https://openairdocs.org/ntsb/CHI78FA047.md): Douglas DC-3 · Richmond, IN · Accident · Serious injuries · Closed · Jul 9, 1978 · N45873 · Substantial damage - [NTSB DCA78AA001](https://openairdocs.org/ntsb/DCA78AA001-79688.md): Douglas DC-3 · Evansville, IN · Accident · 29 fatal · Closed · Dec 13, 1977 · N51071 · Destroyed - [NTSB MIA77FA062](https://openairdocs.org/ntsb/MIA77FA062.md): Douglas DC-3 · Newton, GA · Accident · Serious injuries · Closed · Jun 13, 1977 · N38AP · Substantial damage - [NTSB MIA77DLD39](https://openairdocs.org/ntsb/MIA77DLD39.md): Douglas DC-3 · Polk City, FL · Accident · No injuries · Closed · Mar 18, 1977 · N25670 · Substantial damage - [NTSB LAX74FUJ73](https://openairdocs.org/ntsb/LAX74FUJ73.md): Convair P4Y-2 · Safford, AZ · Accident · 2 fatal · Closed · Jun 27, 1974 · N7237C · Destroyed - [NTSB MIA74AM100](https://openairdocs.org/ntsb/MIA74AM100.md): Douglas DC-3 · San Juan, PR · Accident · No injuries · Closed · Jun 13, 1974 · N87628 · Substantial damage - [NTSB MIA74AM088](https://openairdocs.org/ntsb/MIA74AM088.md): Douglas DC3C · Tampa, FL · Accident · No injuries · Closed · Apr 18, 1974 · N90830 · Substantial damage - [NTSB LAX74IL065](https://openairdocs.org/ntsb/LAX74IL065.md): Douglas DC3C · Imperial, CA · Incident · No injuries · Closed · Mar 29, 1974 · N190BB · Minor damage - [NTSB CHI74AC045](https://openairdocs.org/ntsb/CHI74AC045.md): Douglas DC3A · Ypsilanti, MI · Accident · No injuries · Closed · Dec 2, 1973 · N8661 · Substantial damage - [NTSB MIA72AM038](https://openairdocs.org/ntsb/MIA72AM038.md): Douglas DC-3 · St Maarten (Atlantic Ocean) · Accident · No injuries · Closed · Oct 2, 1971 · N1981W · Destroyed - [NTSB CHI72AC023](https://openairdocs.org/ntsb/CHI72AC023.md): Douglas DC-3 · Peotone, IL · Accident · Serious injuries · Closed · Sep 6, 1971 · N44992 · Minor damage - [NTSB SEA72AS004](https://openairdocs.org/ntsb/SEA72AS004.md): Douglas DC-3C · Redmond, OR · Accident · No injuries · Closed · Jul 26, 1971 · N51041 · Substantial damage - [NTSB NYC72AN006](https://openairdocs.org/ntsb/NYC72AN006.md): Douglas DC-3 · Windsor Lks, CT · Accident · Minor injuries · Closed · Jul 16, 1971 · N74844 · Substantial damage Next page: https://openairdocs.org/ntsb.md?engine=52020&page=2 ## 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 ('52020')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52020 --- 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.