# NTSB investigations: Enstrom F-28F 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 WPR26LA270](https://openairdocs.org/ntsb/WPR26LA270.md): Enstrom F-28F · Malad City, ID · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 21, 2026 · N8624B · Substantial damage > On July 21, 2026, about 0815 mountain daylight time, an Enstrom F-28F helicopter, N8624B, was substantially damaged when it was involved in an accident near Malad City, Idaho. The pilot and pilot-rated passenger were not injured. The helicopter was operated… - [NTSB CEN26LA154](https://openairdocs.org/ntsb/CEN26LA154.md): Enstrom F-28F · Oelwein, IA · Accident · No injuries · Class 4 · Limited · Final report · Mar 29, 2026 · N942MA · Substantial damage > The pilot's failure to maintain directional control during the hover taxi with a quartering tailwind. - [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 ANC21LA038](https://openairdocs.org/ntsb/ANC21LA038.md): Enstrom F-28F · Palmer, AK · Accident · No injuries · Class 3 · Limited · Final report · May 9, 2021 · N8627J · Substantial damage > A loss of drive to the rotor system due to the disengagement of the main belt drive tensioning system, which resulted in a forced landing. The disengagement was due to inadequate clearance between the clutch handle and the roll pin in the handle bellcrank… - [NTSB WPR17IA198](https://openairdocs.org/ntsb/WPR17IA198.md): Enstrom F 28F · Glendale, AZ · Incident · No injuries · Incident investigation · Final report · Aug 22, 2017 · N52PD · No damage > An internal failure of the turbo-compressor, which resulted in oil leaking into the turbo-compressor’s exhaust. - [NTSB GAA16LA100](https://openairdocs.org/ntsb/GAA16LA100.md): Enstrom F-28 · Ritter Butte, OR · Accident · Serious injuries · Limited investigation · Final report · Jan 13, 2016 · N756H · Substantial damage > The pilot’s improper fuel management, which resulted in a total loss of engine power due to fuel exhaustion and subsequent impact with terrain. - [NTSB CEN15LA224](https://openairdocs.org/ntsb/CEN15LA224.md): Enstrom F-28F · Argyle, TX · Accident · Serious injuries · Limited investigation · Final report · May 6, 2015 · N8011Q · Substantial damage > The pilot and flight instructor's inadvertent encounter with settling with power during a confined area takeoff at an altitude that was too low for recovery. - [NTSB CEN14LA412](https://openairdocs.org/ntsb/CEN14LA412.md): Enstrom F 28F · Tomah, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 2014 · N213BL · Substantial damage > A loss of engine power due to the malfunction of the No. 4 cylinder intake valve. - [NTSB WPR13LA167](https://openairdocs.org/ntsb/WPR13LA167.md): Enstrom F-28F · Twin Falls, ID · Accident · No injuries · Limited investigation · Final report · Mar 27, 2013 · N918DK · Substantial damage > A total loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation. - [NTSB CEN11CA638](https://openairdocs.org/ntsb/CEN11CA638.md): Enstrom F-28F · Menominee, MI · Accident · No injuries · Data collection · Final report · Aug 29, 2011 · N228F · Substantial damage > The pilot's failure to maintain control of the helicopter during a hover. - [NTSB CHI08CA203](https://openairdocs.org/ntsb/CHI08CA203.md): Enstrom F28F · Amberg, WI · Accident · No injuries · Data collection · Final report · Jul 23, 2008 · N8626E · Substantial damage > The unsuitable terrain encountered by the pilot during a forced landing following a loss of engine power due to a cylinder head separation. Contributing to the accident was the tree. - [NTSB LAX07LA106](https://openairdocs.org/ntsb/LAX07LA106.md): Enstrom F-28F · Monmouth, OR · Accident · No injuries · Limited investigation · Final report · Mar 6, 2007 · N785M · Substantial damage > The failure of the main drive belt tension assembly shaft due to high cycle, low stress fatigue. - [NTSB FTW04LA212](https://openairdocs.org/ntsb/FTW04LA212.md): Enstrom F-28F · De Leon, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 7, 2004 · N78616 · Substantial damage > The pilot's failure to properly secure a fuel line, which resulted in a loss of engine power due to leakage and subsequent fuel starvation. - [NTSB FTW03LA122](https://openairdocs.org/ntsb/FTW03LA122.md): Enstrom F-28F · Monroe, LA · Accident · No injuries · Limited investigation · Final report · Apr 5, 2003 · N86238 · Substantial damage > The pilot's failure to maintain control of the helicopter. A contributing factor was the crosswind. - [NTSB SEA01LA003](https://openairdocs.org/ntsb/SEA01LA003.md): Enstrom F-28F · Twin Falls, ID · Accident · No injuries · Limited investigation · Final report · Oct 10, 2000 · N223RS · Substantial damage > The pilot's failure to maintain adequate rotor rpm. Unsuitable terrain was selected for the maintenance test flight operation. - [NTSB LAX99LA112](https://openairdocs.org/ntsb/LAX99LA112.md): Enstrom F-28F · San Jose, CA · Accident · No injuries · Limited investigation · Final report · Feb 27, 1999 · N5700C · Substantial damage > The loss of aircraft control due to the pilot's sudden application of collective combined with excessive cyclic inputs. - [NTSB MIA98LA221](https://openairdocs.org/ntsb/MIA98LA221.md): Enstrom F-28F · Marco Island, FL · Accident · No injuries · Limited investigation · Final report · Aug 12, 1998 · N19BZ · Substantial damage > The pilot's inadequate fuel management which led to fuel exhaustion. A related factor was the pilot's improper use of the flight controls during autorotation. - [NTSB ANC98LA109](https://openairdocs.org/ntsb/ANC98LA109.md): Enstrom F-28F · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Jul 25, 1998 · N8622U · Substantial damage > A loss of engine power due to a fractured number three cylinder intake manifold flange, and the pilot's inability to maintain the proper rate of descent during the autorotation flare. A contributing factor associated with the accident was the downwind… - [NTSB CHI98LA166](https://openairdocs.org/ntsb/CHI98LA166.md): Enstrom F28 · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · May 14, 1998 · N86238 · Substantial damage > the student pilot attempting a tailwind landing and improper compensation for the wind resulting in too high of a sink rate and the hard landing. - [NTSB ANC98LA037](https://openairdocs.org/ntsb/ANC98LA037.md): Enstrom F-28F · Haines, AK · Accident · Minor injuries · Limited investigation · Final report · Apr 12, 1998 · N199LB · Substantial damage > The pilot flaring too low during an improper practice autorotation. - [NTSB SEA98FA055](https://openairdocs.org/ntsb/SEA98FA055.md): Enstrom F28F · Baker, OR · Accident · No injuries · Field investigation · Final report · Mar 30, 1998 · N171HH · Substantial damage > Fatigue failure of the steel tubing pylon structure. Factors include inadequate inspection by maintenance personnel of damage after a previous accident. - [NTSB SEA98LA021](https://openairdocs.org/ntsb/SEA98LA021.md): Enstrom F-28F · John Day, OR · Accident · No injuries · Limited investigation · Final report · Dec 6, 1997 · N171HH · Substantial damage > a loss of engine power for undetermined reasons. - [NTSB LAX97LA224](https://openairdocs.org/ntsb/LAX97LA224.md): Enstrom F-28-F · Riverside, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 1997 · N99YC · Substantial damage > failure by unknown maintenance personnel to retorque the nuts on the retainer cover. - [NTSB CHI97FA025](https://openairdocs.org/ntsb/CHI97FA025.md): Enstrom F28F · Gutherie, IL · Accident · 3 fatal · Field investigation · Final report · Nov 11, 1996 · N86214 · Destroyed > the pilot's inadequate preflight preparation and not maintaining control of the helicopter during its rearward flight. A factor was the pilot's over-confidence in his personal ability. - [NTSB CHI91LA154](https://openairdocs.org/ntsb/CHI91LA154.md): Enstrom F28 · Hampshire, IL · Accident · No injuries · Limited investigation · Final report · May 11, 1991 · N86214 · Substantial damage > Aircraft control was not maintained when the aircraft encountered an uncotrolled descent by the pilot. Remedial action by the pilot was inadequate. A factor related to the acident was lack of total experience in type of aircraft by the pilot. - [NTSB LAX90LA335](https://openairdocs.org/ntsb/LAX90LA335.md): Enstrom F28F · Beatty, NV · Accident · No injuries · Limited investigation · Final report · Sep 6, 1990 · N8620A · Substantial damage > The pilot's selection of unsuitable terrain on which to land. Loose shale rock and sloping downhill terrain were factors in the accident. - [NTSB LAX90LA155](https://openairdocs.org/ntsb/LAX90LA155.md): Enstrom F28F · Corona, CA · Accident · No injuries · Limited investigation · Final report · Apr 27, 1990 · N756H · Substantial damage > The partial failure of the engine's right magneto, which resulted in a loss of engine power. - [NTSB BFO90LA011](https://openairdocs.org/ntsb/BFO90LA011.md): Enstrom F-28F · Wilmington, DE · Accident · No injuries · Limited investigation · Final report · Nov 14, 1989 · N8627J · Substantial damage > A loss of engine power as a result of the student pilot inadvertently pulling the mixture control to the idle cut-off position, and the flight instructor's inadequate supervision. A contributing factor to the accident was the rough and uneven terrain. - [NTSB LAX89FA238](https://openairdocs.org/ntsb/LAX89FA238.md): Enstrom F28F · Oakland, CA · Accident · No injuries · Field investigation · Final report · Jul 11, 1989 · N288 · Substantial damage > Failure of the pilot to properly maintain rotor RPM throughout the autorotation. - [NTSB MIA88LA247](https://openairdocs.org/ntsb/MIA88LA247.md): Enstrom F-28F · Boca Raton, FL · Accident · No injuries · Limited investigation · Final report · Aug 6, 1988 · N280MW · Substantial damage > While at an alt of aprx 800 ft 1 mile offshore, the plt reported a drop of the manifold pressure from 29 to 20'HG, & as a result, the main rotor and engine RPM needles split. He then turned on the boost pump with negative results. An autorotative landing in… - [NTSB SEA88LA127](https://openairdocs.org/ntsb/SEA88LA127.md): Enstrom F-28F · Haines, AK · Accident · No injuries · Limited investigation · Final report · Jul 13, 1988 · N8620C · Substantial damage > The pilot purchased the helicopter with an undocumented modification designed to restrain the collective. Reportedly, hereceived no guidance regarding the use of the collective hold-down device. According to the aircraft manufacturer there existed no Enstrom… - [NTSB ANC87FA137](https://openairdocs.org/ntsb/ANC87FA137.md): Enstrom F-28F · Anchorage, AK · Accident · 1 fatal · Field investigation · Final report · Sep 5, 1987 · N8622A · Substantial damage > The pilot of the helicopter was seen flying at approximately 50 feet AGL down the length of a private gravel airstrip near Anchorage, Alaska. A nearby jogger said that the pilot appeared to wave at him as he flew past and then he heard the helicopter crash… - [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 NYC85LA208](https://openairdocs.org/ntsb/NYC85LA208.md): Enstrom F-28F · Groton, CT · Accident · Minor injuries · Limited investigation · Final report · Aug 12, 1985 · N8623X · Substantial damage > Enstrom F28F, N8623X was performing auto rotation at Groton-new london, Connecticut when a loss of power was experienced, the student pilot was at the controls and entered auto rotation with the understanding that it would terminate in a power recovery. After… - [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 SEA84LA021](https://openairdocs.org/ntsb/SEA84LA021.md): Enstrom F28F · Hillsboro, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 15, 1983 · N8622U · Substantial damage > The acft did a hard landing during autorotation after the engine ran rough and quit at 250 ft AGL during takeoff. The pilot had leaned the mixture, he said, prior to takeoff and he was not sure if he pushed the mixture to full rich when the engine started to… - [NTSB DEN83LA099](https://openairdocs.org/ntsb/DEN83LA099.md): Enstrom F-28F · Belfield, ND · Accident · No injuries · Limited investigation · Final report · Apr 17, 1983 · N8623B · Substantial damage > The helicopter rolled over on a slight slope in an open field during a landing. The pilot stated that the acft touched down on the left skid, the acft started to tip to the left and he over corrected so that the acft rolled over to the right. - [NTSB ANC82DA075](https://openairdocs.org/ntsb/ANC82DA075.md): Enstrom F-28F · Near Sutton, AK · Accident · Minor injuries · Final report · Aug 17, 1982 · N5698E · Substantial damage > The pilot had approached and landed on a bluff to discharge his two passengers. However, before discharging the passengers, he decided to takeoff and find a better landing area. When the helicopter was about 10 to 20 ft from the takeoff point, but… ## 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 ('3300412')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=3300412 --- 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.