# Fatal NTSB investigations: Lycoming HIO-360 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. ## Latest cases - [NTSB WPR25FA097](https://openairdocs.org/ntsb/WPR25FA097.md): Lancair 360 · Marana, AZ · Accident · 2 fatal · Class 3 · Field · Preliminary report · Feb 19, 2025 · N3602M · 2 aircraft · Destroyed > On February 19, 2025, about 0828 mountain standard time, a Lancair 360 Mk II, N3602M, was destroyed, and a Cessna 172S, N463ER, sustained minor damage when they were involved in a mid-air collision near Marana Regional Airport (AVQ), Marana, Arizona. The… - [NTSB ERA22FA262](https://openairdocs.org/ntsb/ERA22FA262.md): Enstrom F28 · Greenville, OH · Accident · 2 fatal · Class 3 · Field · Final report · Jun 7, 2022 · N600TA · Substantial damage > An impact with terrain for undetermined reasons. - [NTSB CEN16FA315](https://openairdocs.org/ntsb/CEN16FA315.md): Hughes 269C · Howe, TX · Accident · 1 fatal · Field investigation · Final report · Aug 10, 2016 · N9277R · Substantial damage > The improper execution of an autorotation following the loss of engine power, which resulted in an uncontrolled descent into terrain. Contributing to the accident was the flight instructor's lack of remedial action during the autorotation. - [NTSB CEN16FA304](https://openairdocs.org/ntsb/CEN16FA304.md): Schweizer 269C 1 · Jeanerette, LA · Accident · 1 fatal · Field investigation · Final report · Aug 3, 2016 · N1549W · Substantial damage > The pilot's loss of helicopter control for reasons that could not be determined based on available evidence. - [NTSB WPR15FA205](https://openairdocs.org/ntsb/WPR15FA205.md): Schweizer 269C · Newberg, OR · Accident · 2 fatal · Field investigation · Final report · Jul 2, 2015 · N2096W · Destroyed > The loss of translation/rotational power between the engine and the transmission due to the severe wear of the forward spline portion of the lower coupling drive shaft. The reason for the severe wear of the forward spline could not be definitively determined… - [NTSB ERA13LA433](https://openairdocs.org/ntsb/ERA13LA433.md): Enstrom F-28C · Bloomsburg, PA · Accident · 1 fatal · Limited investigation · Final report · Sep 27, 2013 · N631DP · Minor damage > The relieved pilot’s failure to maintain clearance from the rotating main rotor blades after he exited the helicopter. - [NTSB SEA08FA022](https://openairdocs.org/ntsb/SEA08FA022.md): Hughes 269C · Baker City, OR · Accident · 1 fatal · Field investigation · Final report · Nov 8, 2007 · N381MC · Substantial damage > The pilot’s failure to maintain main rotor rpm while maneuvering. - [NTSB CHI06LA138](https://openairdocs.org/ntsb/CHI06LA138.md): Hughes 269A · Berlin Center, OH · Accident · 1 fatal · Limited investigation · Final report · May 28, 2006 · N69HU · Substantial damage > The pilot flew at a low altitude and failed to maintain clearance from the wire. A factor was the wire. - [NTSB CHI04LA015](https://openairdocs.org/ntsb/CHI04LA015.md): Schweizer 269C · Fenton, MI · Accident · 1 fatal · Limited investigation · Final report · Oct 18, 2003 · N456JP · Substantial damage > The intentional low altitude flight maneuvering and the ostentatious display by the pilot. The water was a factor to the accident. - [NTSB DEN03FA090](https://openairdocs.org/ntsb/DEN03FA090.md): Hughes 269C · Watkins, CO · Accident · 1 fatal · Field investigation · Final report · May 28, 2003 · N9643F · Destroyed > failure of both pilots to initiate a timely recovery from a practice autorotation. A contributing factor was the instructor's inadequate supervision of the pilot receiving instruction. - [NTSB LAX03FA134](https://openairdocs.org/ntsb/LAX03FA134.md): Hughes 269B · Auburn, CA · Accident · 2 fatal · Field investigation · Final report · Apr 11, 2003 · N16133 · Destroyed > the misjudged flare maneuver by an unknown crewmember during a likely practice autorotation that resulted in an in-flight collision with terrain. - [NTSB LAX03FA060](https://openairdocs.org/ntsb/LAX03FA060.md): Schweizer 269C · Collinsville, CA · Accident · 1 fatal · Field investigation · Final report · Jan 4, 2003 · N98TH · Destroyed > A loss of engine power for undetermined reasons, and the pilot's failure to maintain main rotor rpm during the subsequent autorotation. A factor in the accident was the unsuitable nature of the terrain for a forced landing. - [NTSB CHI01FA257](https://openairdocs.org/ntsb/CHI01FA257.md): Schweizer 269C · Waterloo, IN · Accident · 2 fatal · Field investigation · Final report · Aug 5, 2001 · N6129M · Substantial damage > Aircraft control not maintained for undetermined reasons. - [NTSB MIA00GA121](https://openairdocs.org/ntsb/MIA00GA121.md): Hughes 269C · Del Rio, TX · Accident · 2 fatal · Final report · Mar 27, 2000 · N1110N · Destroyed > An in-flight loss of control while maneuvering for undetermined reasons resulting in an in-flight collision with terrain. A factor in the accident was the in-flight loss of engine power and rotor rpm. - [NTSB SEA00FA014](https://openairdocs.org/ntsb/SEA00FA014.md): Enstrom F28C · Pendleton, OR · Accident · 1 fatal · Field investigation · Final report · Nov 2, 1999 · N635H · Destroyed > Failure to maintain clearance from the runway surface while maneuvering at low altitude, and inadequate remedial action after the tail rotor struck the surface. - [NTSB SEA99FA168](https://openairdocs.org/ntsb/SEA99FA168.md): Schweizer 269C · Westport, OR · Accident · 1 fatal · Field investigation · Final report · Aug 8, 1999 · N383T · Destroyed > The pilot's failure to maintain clearance from terrain. Factors include low clouds and visibility and near-night light conditions. - [NTSB LAX95LA332](https://openairdocs.org/ntsb/LAX95LA332.md): Enstrom F-28C · Livermore, CA · Accident · 1 fatal · Limited investigation · Final report · Sep 10, 1995 · N5689T · Destroyed > the pilot's inadequate preflight fuel load determination procedures which resulted in fuel exhaustion. In addition, the pilot's delayed and improper use of the collective and cyclic flight controls following the engine failure led to his failure to maintain… - [NTSB LAX93FA260](https://openairdocs.org/ntsb/LAX93FA260.md): Hughes 269A · Henderson, NV · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1993 · N9048R · Destroyed > the pilot's improper use of the collective control and his failure to maintain adequate RPM during an autorotative descent during a practice power off landing. A factor which contributed to the accident related to the pilot's lack of recent experience… - [NTSB NYC93FA115](https://openairdocs.org/ntsb/NYC93FA115.md): Enstrom F28C · Gordon, KY · Accident · 1 fatal · Field investigation · Final report · Jun 17, 1993 · N200NH · Destroyed > The pilot's failure to see and avoid the wire. - [NTSB BFO93FA019](https://openairdocs.org/ntsb/BFO93FA019.md): Hughes 269C · Tonawanda, NY · Accident · 2 fatal · Field investigation · Final report · Jan 11, 1993 · N1088Z · Destroyed > Improper inflight planning/decision by the pilot and his failure to maintain clearance from an obstacle during flight. Factors related to the accident include poor visibility and weather conditions at dusk, and the pilot's excessive airspeed for the… - [NTSB SEA90LA016](https://openairdocs.org/ntsb/SEA90LA016.md): Hughes 269C · Estacada, OR · Accident · 1 fatal · Limited investigation · Final report · Nov 15, 1989 · N9592F · Destroyed > The pilot misjudged clearance between her external load and the obstruction. Factors related to the accident were: the obstruction, improper maintenance and modification of the external load line/hook by the operator, failure of the pilot to jettison the… - [NTSB FTW89DRG06](https://openairdocs.org/ntsb/FTW89DRG06.md): Hughes 269C · Rocksprings, TX · Accident · 1 fatal · Final report · May 18, 1989 · N58228 · Destroyed > The pilot diverted his attention from operation of the helicopter, failed to maintian proper rotor RPM, and failed to maintain altitude (clearance) above the ground, while maneuvering at low altitude. A contributing factor was his impairment from use of a… - [NTSB ATL88FA168](https://openairdocs.org/ntsb/ATL88FA168.md): Hughes 269A · Ozark, AL · Accident · 1 fatal · Field investigation · Final report · May 9, 1988 · N1038Y · Substantial damage > Three months prior to the accident a mechanic repaired the left magneto. He reinstalled it and timed it with the right magneto. Both magnetos were found to have advanced timing. Internal examination showed discrepancies which would lead to electrical… - [NTSB NYC87MA024](https://openairdocs.org/ntsb/NYC87MA024.md): Enstrom F-28F · Manhattan, NY · Accident · 1 fatal · Major investigation · Final report · Oct 22, 1986 · N8617B · Destroyed > The aircraft was contracted by nbc to make daily highway traffic observations in the new york city area. The pilot and passenger, an nbc radio traffic reporter, were flying in a northerly direction along Manhattan's west side at an altitude of about 75 feet.… - [NTSB DEN85FA134](https://openairdocs.org/ntsb/DEN85FA134.md): Enstrom F-28F · Carrizozo, NM · Accident · 1 fatal · Field investigation · Final report · May 12, 1985 · N8618A · Substantial damage > The student pilot departed albiquerque, NM with less than full fuel tanks and a worn out eng driven fuel pump which allowed fuel to be pumped overboard. No flt plan was filed. During his VMC x-country flt, the eng failed and an unsuccessful autorotation… - [NTSB FTW81FA146](https://openairdocs.org/ntsb/FTW81FA146.md): Hughes 269C · Startzville, TX · Accident · 1 fatal · Closed · Sep 21, 1981 · N8322F · Destroyed - [NTSB CHI80FA014](https://openairdocs.org/ntsb/CHI80FA014.md): Hughes 269C · West Milton, OH · Accident · 1 fatal · Closed · Dec 15, 1979 · N7483F · Destroyed ## 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."highestInjuryLevel" = 'Fatal' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41524&fatal=1 --- 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.