# Final NTSB investigations: Lycoming LTS-101 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 CEN25LA163](https://openairdocs.org/ntsb/CEN25LA163.md): Messerschmitt-Bolkow-Blohm BK 117 · Hartford, IL · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 25, 2025 · N880SL · Substantial damage > The pilot’s failure to maintain directional control during the initial climb at night from a confined area landing zone, that resulted in an impact with a tree, a loss of control, and a subsequent impact with terrain. - [NTSB ERA19LA145](https://openairdocs.org/ntsb/ERA19LA145.md): Bell 222 · Montgomery, NY · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 30, 2019 · N222ML · Substantial damage > A partial loss of engine power, as reported by the pilot, during takeoff for reasons that could not be determined based on available information. - [NTSB CEN12CA078](https://openairdocs.org/ntsb/CEN12CA078.md): Messerschmitt-Bolkow-Blohm BK 117 B-2 · Carbondale, IL · Accident · No injuries · Data collection · Final report · Nov 13, 2011 · N330SL · Substantial damage > The main rotor blade’s contact with the vertical stabilizer during the engine shutdown in strong, gusty wind conditions. - [NTSB WPR10LA200](https://openairdocs.org/ntsb/WPR10LA200.md): Bell 222U · Santa Maria, CA · Accident · No injuries · Limited investigation · Final report · Apr 9, 2010 · N222UT · Substantial damage > The pilot's inadequate preflight inspection to ensure that all tie-down straps were removed prior to flight. Contributing to the accident was the pilot's improper management of sleep opportunities during the preceding rest period, which likely contributed to… - [NTSB CEN09CA218](https://openairdocs.org/ntsb/CEN09CA218.md): Bell 222 · Milliken, CO · Accident · No injuries · Data collection · Final report · Mar 13, 2009 · N222LL · Substantial damage > The separation of the left engine cowling for undetermined reasons. - [NTSB DEN08CA035](https://openairdocs.org/ntsb/DEN08CA035.md): Bell 222 UT · Casper, WY · Accident · No injuries · Data collection · Final report · Nov 28, 2007 · N222LF · Substantial damage > High winds forcing the helicopter's main rotor blade to strike the helicopter vertical stabilizer and tail boom during engine start, causing substantial damage. - [NTSB DFW06LA072](https://openairdocs.org/ntsb/DFW06LA072.md): Bell 222B · Gulf of Mexico (Gulf of Mexico) · Accident · Minor injuries · Limited investigation · Final report · Feb 19, 2006 · N306CH · Destroyed > The flight crew's failure to maintain control of the helicopter, and the crew's diverted attention to secondary tasks while preparing for the night landing. A contributing factor was the dark night conditions. - [NTSB NYC05LA145](https://openairdocs.org/ntsb/NYC05LA145.md): Eurocopter Deutschland BK-117-B2 · Columbus, OH · Accident · No injuries · Limited investigation · Final report · Sep 22, 2005 · N117MK · Substantial damage > The pilot's failure to maintain aircraft control during the landing flare, which resulted in a hard landing. A factor associated with this accident was a tailwind. - [NTSB ATL05FA144](https://openairdocs.org/ntsb/ATL05FA144.md): MBB BK 117 B-1 · Jacksonville, FL · Accident · No injuries · Field investigation · Final report · Aug 14, 2005 · N117US · Substantial damage > The pilot in-flight decision to land in a unsuitable landing area during a precautionary landing. A factor was the loss of power on the number two engine. - [NTSB LAX04CA332](https://openairdocs.org/ntsb/LAX04CA332.md): Bell 222U · Santa Rosa, CA · Accident · No injuries · Data collection · Final report · Sep 28, 2004 · N222UT · Substantial damage > the pilot-in-command's (examinee's) incorrect collective control response to a simulated power loss of the number 1 engine. - [NTSB ATL04LA055](https://openairdocs.org/ntsb/ATL04LA055.md): MBB BK117A3 · Okeechobee, FL · Accident · Minor injuries · Limited investigation · Final report · Dec 17, 2003 · N911WJ · Substantial damage > The pilot continued visual flight into instrument meteorological conditions and experienced spatial disorientation, loss of aircraft control, and in-flight collision with trees and terrain. Factors in the accident were the pilot's failure to follow company… - [NTSB LAX03IA252](https://openairdocs.org/ntsb/LAX03IA252.md): Bell 222 · Salinas, CA · Incident · No injuries · Incident investigation · Final report · Jul 30, 2003 · N29KH · No damage > The fatigue failure (fracture) of the right forward transmission lift link during cruise flight, which resulted in a severe vibration and an emergency landing. - [NTSB LAX02FA276](https://openairdocs.org/ntsb/LAX02FA276.md): Bell 222U · Nipton, CA · Accident · 3 fatal · Field investigation · Final report · Sep 7, 2002 · N417MA · Destroyed > The main rotor blade separation while maneuvering for unknown reasons. A factor was the dark night condition. - [NTSB IAD02FA026](https://openairdocs.org/ntsb/IAD02FA026.md): MBB BK-117 A-3 · Cleveland, OH · Accident · 2 fatal · Field investigation · Final report · Jan 18, 2002 · N626MB · Destroyed > pilot's failure to maintain directional control of the helicopter while hovering, which resulted in its collision with a building. Factors were the confined area, tail wind, and wind gusts. - [NTSB DEN01LA084](https://openairdocs.org/ntsb/DEN01LA084.md): Bell 222UT · Alcova, WY · Accident · No injuries · Limited investigation · Final report · Apr 6, 2001 · N222LF · Substantial damage > the pilot's failure to maintain tail rotor clearance during a right pedal turn while hovering. - [NTSB NYC00FA127](https://openairdocs.org/ntsb/NYC00FA127.md): Eurocopter BK-117-A4 · Cincinnati, OH · Accident · Serious injuries · Field investigation · Final report · May 7, 2000 · N911NC · Substantial damage > the pilot's misjudgment of his closure rate, while turning to land on the rooftop helipad, which resulted in a collision with the building. Factors in the accident were the tailwind and the stuck windsock. - [NTSB ATL00FA048](https://openairdocs.org/ntsb/ATL00FA048.md): Eurocopter BK117-A3 · St. Petersburg, FL · Accident · 3 fatal · Field investigation · Final report · Apr 25, 2000 · N428MB · Destroyed > The pilot's failure to maintain clearance that resulted in the in-flight collision with a tower. - [NTSB CHI00FA111](https://openairdocs.org/ntsb/CHI00FA111.md): Bell 222U · St. Paul, MN · Accident · No injuries · Field investigation · Final report · Apr 14, 2000 · N225LL · Substantial damage > The loss of clamp-up force between the transmission case and the pylon mounted actuator support assembly which resulted in fatigue failure of the threaded studs and dowel pins, the failure of the flight control system, helicopter control not being possible… - [NTSB MIA99LA129](https://openairdocs.org/ntsb/MIA99LA129.md): Mbb BK 117 A-3 · Sarasota, FL · Accident · No injuries · Limited investigation · Final report · Apr 11, 1999 · N163BK · Substantial damage > The pilot-in-command's failure to maintain a visual lookout while maneuvering in a hover resulting in the tail rotor colliding with a building. - [NTSB LAX95LA019](https://openairdocs.org/ntsb/LAX95LA019.md): Eurocopter AS-350D · Kaupo, HI · Accident · Minor injuries · Limited investigation · Final report · Oct 24, 1994 · N5771L · Substantial damage > a total loss of engine power by the corrosion fatigue failure of the compressor impeller due to the failure of company maintenance personnel to perform the prescribed daily compressor wash procedures and the inadequate maintenance inspections, which failed to… - [NTSB LAX94FA317](https://openairdocs.org/ntsb/LAX94FA317.md): Aerospatiale AS350-D · Kukuihaele, HI · Accident · No injuries · Field investigation · Final report · Aug 11, 1994 · N889AT · Substantial damage > a fatigue crack in the 'T' fitting on the power turbine governor pneumatic accumulator. A factor was the rough, rock-covered landing area. - [NTSB LAX94IA145](https://openairdocs.org/ntsb/LAX94IA145.md): Aerospatiale AS-350D · Huelo, HI · Incident · No injuries · Incident investigation · Final report · Feb 28, 1994 · N5771L · Minor damage > The operator maintenance personnel's inadequate 100-hour inspection. The loose fuel control line fitting, the tree stump, and the unsuitable terrain were factors in this accident. - [NTSB LAX92FA025](https://openairdocs.org/ntsb/LAX92FA025.md): Aerospatiale AS350B · Scottsdale, AZ · Accident · Minor injuries · Field investigation · Final report · Oct 26, 1991 · N9001S · Substantial damage > An undetermined malfunction of the hydraulic system in which the system was locked, preventing the movement of the flight controls, and loss of directional control. - [NTSB ATL89FA116](https://openairdocs.org/ntsb/ATL89FA116.md): MBB BK-117-A-3 · Coinjock, NC · Accident · 2 fatal · Field investigation · Final report · Mar 27, 1989 · N39187 · Destroyed > Failure of the cellular company to properly install an operational lighting system on a newly constructed transmission tower. Darkness and the company's failure to notify flight service of the unlighted tower were related factors. - [NTSB NYC88IA186](https://openairdocs.org/ntsb/NYC88IA186.md): MBB BK-117 · Manhattan, NY · Incident · No injuries · Incident investigation · Final report · Jul 12, 1988 · N135CP · Minor damage > Failure of the main rotor blade appears to be the result of a static downward bending overstress, caused by another helicopter hovering over or very close to the main rotor blade as it was in a static/stopped position. - [NTSB MIA87IA141](https://openairdocs.org/ntsb/MIA87IA141.md): Bell 222U · Oxford, MS · Incident · No injuries · Incident investigation · Final report · Apr 20, 1987 · N222HX · Minor damage > The pilot executed a precautionary landing after hearing a loud bang and experiencing a loss of the number 1 engine. Post accident examination revealed that the power turbine wheel blades had failed, and the wheel parts logjammed and penetrated the engine… - [NTSB NYC86FA183](https://openairdocs.org/ntsb/NYC86FA183.md): Bell B-222A · Staten Island, NY · Accident · No injuries · Field investigation · Final report · Jul 17, 1986 · N404WW · Substantial damage > The helicopter, on a FAR 135 flight was in cruise flt at 900 ft. the plt was checking for called VFR traffic and the co-pilot was occuppied with the RNAV when a loud bang was heard and a sudden yaw was felt. Both crew members stated they reacted as instructed… - [NTSB LAX86LA098](https://openairdocs.org/ntsb/LAX86LA098.md): Bell 222UT · La Habra, CA · Accident · Minor injuries · Limited investigation · Final report · Jan 26, 1986 · N3177G · Substantial damage > On January 26, 1986 a Bell 222UT collided with a 3/8 inch support cable. The pilot saw the lower of two of the three support cables about 75 feet AGL as he was transitioning to forward flight from a vertical max performance t/o. the pilot applied aft cyclic… - [NTSB FTW86MA018](https://openairdocs.org/ntsb/FTW86MA018.md): Bell 222UT · East Cameron · Accident · 2 fatal · Major investigation · Final report · Oct 24, 1985 · N3194M · Destroyed > Three pax rprtd that just prior to reaching the helipad, the helicopter's forward movement stopped and the helicopter wobbled or yawed from side to side. The pax's rprted that the pilot appeared to be trying to gain altitude and go forward when they heard a… - [NTSB ATL85LA017](https://openairdocs.org/ntsb/ATL85LA017.md): Bell 222 · Pascagoula, MS · Accident · Minor injuries · Limited investigation · Final report · Oct 20, 1984 · N38929 · Substantial damage > The acft sustained substantial damage while taking off from a barge during a FAR 135 medevac flt. Investigation revealedthat the barge was pitching due to rough seas. As the acft lifted, the rear of the acft was struck by the landing platform as it pitched… - [NTSB FTW84LA090](https://openairdocs.org/ntsb/FTW84LA090.md): Bell 222U · Albuquerque, NM · Accident · No injuries · Limited investigation · Final report · Dec 10, 1983 · N3177G · Substantial damage > The helicopter was parked on the ramp, facing east. When the plt called the tower for clearance, he requested a west departure. The plt received a clearance & was advised of traffic on the west ramp (behind the helicopter) & was instructed not to overfly the… - [NTSB FTW82DA285](https://openairdocs.org/ntsb/FTW82DA285.md): Aerospatiale AS-350D · Gulf Of Mexico · Accident · No injuries · Final report · Jul 19, 1982 · N5771L · Substantial damage > During an over water flight, the engine chip detector light illuminated and shortly thereafter, the engine failed. The pilot made an autorotative landing in the Gulf Of Mexico with no further damage. All three rotor blades were full of holes and tears and one… - [NTSB FTW81IA067](https://openairdocs.org/ntsb/FTW81IA067.md): Bell 222 · Lake Charles, LA · Incident · No injuries · Closed · Apr 9, 1981 · N38929 · No damage - [NTSB FTW78FPD07](https://openairdocs.org/ntsb/FTW78FPD07.md): Bell 222 · Mansfield, TX · Accident · No injuries · Closed · Dec 1, 1977 · N9992K · Substantial damage ## 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."completionStatus" = 'Completed' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41560')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41560&status=final --- 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.