# Turbomeca ARRIEL-1SER - Type: Engine model (FAA registry) - Registry code: 60030 - Manufacturer (registry): TURBOMECA - Model: ARRIEL 1SER - Engine type: Turbo-shaft - Power: 681 hp - Installed in: 132 registered aircraft - Page: https://openairdocs.org/engine/turbomeca-arriel-1ser Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (132, first 50) - [N109TA](https://openairdocs.org/aircraft/N109TA): [Lima Whiskey Alpha LLC](https://openairdocs.org/faa-owner/LIMA%20WHISKEY%20ALPHA%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1998, S/N 3103 - [N113JP](https://openairdocs.org/aircraft/N113JP): [Juliette Papa Leasing LLC](https://openairdocs.org/faa-owner/JULIETTE%20PAPA%20LEASING%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1989, S/N 2265 - [N117HD](https://openairdocs.org/aircraft/N117HD): [US Helicopters Inc](https://openairdocs.org/faa-owner/US%20HELICOPTERS%20INC), [Marshville, NC](https://openairdocs.org/faa-place/NC/Marshville), S/N 3318 - [N117NC](https://openairdocs.org/aircraft/N117NC): [Triple M Leasing LLC](https://openairdocs.org/faa-owner/TRIPLE%20M%20LEASING%20LLC), [Shreveport, LA](https://openairdocs.org/faa-place/LA/Shreveport), built 1997, S/N 7517 - [N117UP](https://openairdocs.org/aircraft/N117UP): [Metro Aviation Inc](https://openairdocs.org/faa-owner/METRO%20AVIATION%20INC), [Shreveport, LA](https://openairdocs.org/faa-place/LA/Shreveport), built 1994, S/N 7508 - [N119TV](https://openairdocs.org/aircraft/N119TV): [U S Helicopters Inc](https://openairdocs.org/faa-owner/U%20S%20HELICOPTERS%20INC), [Marshville, NC](https://openairdocs.org/faa-place/NC/Marshville), built 1988, S/N 2122 - [N121NC](https://openairdocs.org/aircraft/N121NC): [Sun Meridian Bernardino LLC](https://openairdocs.org/faa-owner/SUN%20MERIDIAN%20BERNARDINO%20LLC), [Brea, CA](https://openairdocs.org/faa-place/CA/Brea), built 1998, S/N 760491 - [N129AL](https://openairdocs.org/aircraft/N129AL): [Niihau Helicopters Inc](https://openairdocs.org/faa-owner/NIIHAU%20HELICOPTERS%20INC), [Makaweli, HI](https://openairdocs.org/faa-place/HI/Makaweli), S/N 10029 - [N129TV](https://openairdocs.org/aircraft/N129TV): [US Helicopters Inc](https://openairdocs.org/faa-owner/US%20HELICOPTERS%20INC), [Marshville, NC](https://openairdocs.org/faa-place/NC/Marshville), built 1996, S/N 2897 - [N132TV](https://openairdocs.org/aircraft/N132TV): [U S Helicopters Inc](https://openairdocs.org/faa-owner/U%20S%20HELICOPTERS%20INC), [Marshville, NC](https://openairdocs.org/faa-place/NC/Marshville), built 1982, S/N 1636 - [N145FH](https://openairdocs.org/aircraft/N145FH): [Adventist Health System Sunbelt Inc DBA](https://openairdocs.org/faa-owner/ADVENTIST%20HEALTH%20SYSTEM%20SUNBELT%20INC%20DBA), [Altamonte Springs, FL](https://openairdocs.org/faa-place/FL/Altamonte%20Springs), built 2004, S/N 9047 - [N146HC](https://openairdocs.org/aircraft/N146HC): [Air Methods LLC](https://openairdocs.org/faa-owner/AIR%20METHODS%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 2005, S/N 9069 - [N152RM](https://openairdocs.org/aircraft/N152RM): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2001, S/N 3422 - [N178EH](https://openairdocs.org/aircraft/N178EH): [Christian Rouleau LLC](https://openairdocs.org/faa-owner/CHRISTIAN%20ROULEAU%20LLC), [Hypoluxo, FL](https://openairdocs.org/faa-place/FL/Hypoluxo), built 1989, S/N 2264 - [N183EH](https://openairdocs.org/aircraft/N183EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1993, S/N 2752 - [N185EH](https://openairdocs.org/aircraft/N185EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1994, S/N 2823 - [N187EH](https://openairdocs.org/aircraft/N187EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1994, S/N 2839 - [N1883H](https://openairdocs.org/aircraft/N1883H): [Helijet Ventures LLC](https://openairdocs.org/faa-owner/HELIJET%20VENTURES%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1996, S/N 1883 - [N193BH](https://openairdocs.org/aircraft/N193BH): [Black Mountain Aviation LLC](https://openairdocs.org/faa-owner/BLACK%20MOUNTAIN%20AVIATION%20LLC), [Boulder City, NV](https://openairdocs.org/faa-place/NV/Boulder%20City), built 1995, S/N 2894 - [N197BH](https://openairdocs.org/aircraft/N197BH): [Nevada Helicopter Leasing LLC](https://openairdocs.org/faa-owner/NEVADA%20HELICOPTER%20LEASING%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 1992, S/N 2666 - [N198LS](https://openairdocs.org/aircraft/N198LS): [Metro Aviation Inc](https://openairdocs.org/faa-owner/METRO%20AVIATION%20INC), [Shreveport, LA](https://openairdocs.org/faa-place/LA/Shreveport), built 2001, S/N 7537 - [N214EH](https://openairdocs.org/aircraft/N214EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1998, S/N 3163 - [N214ST](https://openairdocs.org/aircraft/N214ST): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), S/N 2141 - [N215EH](https://openairdocs.org/aircraft/N215EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1998, S/N 3172 - [N217EH](https://openairdocs.org/aircraft/N217EH): [Bristow LLC](https://openairdocs.org/faa-owner/BRISTOW%20LLC), [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles), built 1999, S/N 3197 - [N220CF](https://openairdocs.org/aircraft/N220CF): [Mercy Air Helicopter Inc](https://openairdocs.org/faa-owner/MERCY%20AIR%20HELICOPTER%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), built 2001, S/N 3411 - [N228LA](https://openairdocs.org/aircraft/N228LA): [City Of Los Angeles](https://openairdocs.org/faa-owner/CITY%20OF%20LOS%20ANGELES), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles), built 2000, S/N 3316 - [N229LA](https://openairdocs.org/aircraft/N229LA): [City Of Los Angeles](https://openairdocs.org/faa-owner/CITY%20OF%20LOS%20ANGELES), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles), built 2000, S/N 3317 - [N247HH](https://openairdocs.org/aircraft/N247HH): [Integrity Aircraft Title Holdings LLC](https://openairdocs.org/faa-owner/INTEGRITY%20AIRCRAFT%20TITLE%20HOLDINGS%20LLC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), S/N 6529 - [N252CH](https://openairdocs.org/aircraft/N252CH): [Coastal Helicopters Inc](https://openairdocs.org/faa-owner/COASTAL%20HELICOPTERS%20INC), [Juneau, AK](https://openairdocs.org/faa-place/AK/Juneau), built 1996, S/N 2954 - [N253CH](https://openairdocs.org/aircraft/N253CH): [Coastal Helicopters Inc](https://openairdocs.org/faa-owner/COASTAL%20HELICOPTERS%20INC), [Juneau, AK](https://openairdocs.org/faa-place/AK/Juneau), built 1997, S/N 2974 - [N26HF](https://openairdocs.org/aircraft/N26HF): [Heliflite Shares LLC](https://openairdocs.org/faa-owner/HELIFLITE%20SHARES%20LLC), [Kearny, NJ](https://openairdocs.org/faa-place/NJ/Kearny), built 1998, S/N 760488 - [N271HP](https://openairdocs.org/aircraft/N271HP): [Metroplex Flight Services LLC](https://openairdocs.org/faa-owner/METROPLEX%20FLIGHT%20SERVICES%20LLC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1994, S/N 2775 - [N274CH](https://openairdocs.org/aircraft/N274CH): [Walker Kenneth E](https://openairdocs.org/faa-owner/WALKER%20KENNETH%20E), [Ford City, PA](https://openairdocs.org/faa-place/PA/Ford%20City), built 1989, S/N 2306 - [N275BP](https://openairdocs.org/aircraft/N275BP): [City Of Burbank](https://openairdocs.org/faa-owner/CITY%20OF%20BURBANK), [Burbank, CA](https://openairdocs.org/faa-place/CA/Burbank), S/N 1930 - [N276FX](https://openairdocs.org/aircraft/N276FX): [Flexjet Vertical Lift LLC](https://openairdocs.org/faa-owner/FLEXJET%20VERTICAL%20LIFT%20LLC), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford), built 2000, S/N 760509 - [N276TH](https://openairdocs.org/aircraft/N276TH): [Health Care District Of Palm Beach County](https://openairdocs.org/faa-owner/HEALTH%20CARE%20DISTRICT%20OF%20PALM%20BEACH%20COUNTY), [West Palm Beach, FL](https://openairdocs.org/faa-place/FL/West%20Palm%20Beach), built 1999, S/N 760494 - [N279CH](https://openairdocs.org/aircraft/N279CH): [Coastal Helicopters Inc](https://openairdocs.org/faa-owner/COASTAL%20HELICOPTERS%20INC), [Juneau, AK](https://openairdocs.org/faa-place/AK/Juneau), built 1979, S/N 1149 - [N288CH](https://openairdocs.org/aircraft/N288CH): [Coastal Helicopters Inc](https://openairdocs.org/faa-owner/COASTAL%20HELICOPTERS%20INC), [Juneau, AK](https://openairdocs.org/faa-place/AK/Juneau), built 1990, S/N 2383 - [N292LF](https://openairdocs.org/aircraft/N292LF): [Discovery Helicopters LLC](https://openairdocs.org/faa-owner/DISCOVERY%20HELICOPTERS%20LLC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1987, S/N 2042 - [N293SV](https://openairdocs.org/aircraft/N293SV): [Flt Services LLC](https://openairdocs.org/faa-owner/FLT%20SERVICES%20LLC), [Woods Cross, UT](https://openairdocs.org/faa-place/UT/Woods%20Cross), built 1992, S/N 6408 - [N29HD](https://openairdocs.org/aircraft/N29HD): [Helinet Aviation Services LLC](https://openairdocs.org/faa-owner/HELINET%20AVIATION%20SERVICES%20LLC), [Van Nuys, CA](https://openairdocs.org/faa-place/CA/Van%20Nuys), built 1995, S/N 2874 - [N312B](https://openairdocs.org/aircraft/N312B): [Patriot Aviation Inc](https://openairdocs.org/faa-owner/PATRIOT%20AVIATION%20INC), [Greenville, DE](https://openairdocs.org/faa-place/DE/Greenville), S/N 2243 - [N350FS](https://openairdocs.org/aircraft/N350FS): [Discovery Helicopters LLC](https://openairdocs.org/faa-owner/DISCOVERY%20HELICOPTERS%20LLC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1993, S/N 2728 - [N350HF](https://openairdocs.org/aircraft/N350HF): [Trans Aero LLC](https://openairdocs.org/faa-owner/TRANS%20AERO%20LLC), [Cheyenne, WY](https://openairdocs.org/faa-place/WY/Cheyenne), built 1999, S/N 3183 - [N350MA](https://openairdocs.org/aircraft/N350MA): [Labutte Air Inc](https://openairdocs.org/faa-owner/LABUTTE%20AIR%20INC), [Flint, MI](https://openairdocs.org/faa-place/MI/Flint), built 1986, S/N 1882 - [N350NT](https://openairdocs.org/aircraft/N350NT): [North Texas Helicopters Inc](https://openairdocs.org/faa-owner/NORTH%20TEXAS%20HELICOPTERS%20INC), [Newark, TX](https://openairdocs.org/faa-place/TX/Newark), built 1982, S/N 1512 - [N350PS](https://openairdocs.org/aircraft/N350PS): [Sofie Enterprises Inc](https://openairdocs.org/faa-owner/SOFIE%20ENTERPRISES%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2000, S/N 3274 - [N350UK](https://openairdocs.org/aircraft/N350UK): [International Air Services Inc Owner Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20OWNER%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1980, S/N 1244 - [N351FS](https://openairdocs.org/aircraft/N351FS): [Discovery Helicopters LLC](https://openairdocs.org/faa-owner/DISCOVERY%20HELICOPTERS%20LLC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1997, S/N 3038 All 132: https://openairdocs.org/engine/turbomeca-arriel-1ser/aircraft.md ## NTSB investigations (113, newest 50) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ERA25LA204](https://openairdocs.org/ntsb/ERA25LA204), May 19, 2025: Eurocopter Deutschland MBB-BK 117 C-1 (N117NC), Fort Washington, PA, substantial damage. Probable cause: Maintenance personnel’s failure to identify and replace damaged rivet nuts at the air conditioning louver assembly, which resulted in the separation of the louver assembly from the helicopter, the… - [NTSB GAA24WA234](https://openairdocs.org/ntsb/GAA24WA234), Jul 25, 2024: Eurocopter AS 350 B2 Ecureuil (N6087C), Laredo/Border, Mexico, substantial damage - [NTSB ANC20MA010](https://openairdocs.org/ntsb/ANC20MA010), Dec 27, 2019: Airbus AS350B2 (N985SA), Kekaha, HI, destroyed, 7 fatal. Probable cause: The pilot’s decision to continue flight under visual flight rules (VFR) into instrument meteorological conditions (IMC), which resulted in the collision into terrain. Contributing to the accident was… - [NTSB GAA19CA233](https://openairdocs.org/ntsb/GAA19CA233), Apr 28, 2019: Aerospatiale AS350 (N288CH), Juneau, AK, substantial damage. Probable cause: The pilot's failure to maintain a proper approach to landing on a ridge and his failure to maintain clearance from snow-covered terrain, which resulted in a tail rotor strike. - [NTSB GAA18CA289](https://openairdocs.org/ntsb/GAA18CA289), May 18, 2018: Aerospatiale AS350 B2 Ecureuil (N288CH), Yakutat, AK, substantial damage. Probable cause: The helicopter’s movement during startup in gusting wind conditions, which resulted in the main rotor striking the tailboom. - [NTSB ERA17LA126](https://openairdocs.org/ntsb/ERA17LA126), Feb 21, 2017: Eurocopter AS 350 (N413LP), San Juan, PR, substantial damage. Probable cause: The flight instructor's incorrect manipulations of the twist grip throttle control during a practice autorotation, which resulted in an engine overspeed and subsequent fire. - [NTSB GAA16CA328](https://openairdocs.org/ntsb/GAA16CA328), Jun 17, 2016: Airbus AS350 (N4035W), McAllen, TX, substantial damage. Probable cause: The pilot's inadvertent input of the right tail rotor pedal, which resulted in a loss of directional control and an impact with service equipment. - [NTSB ANC16LA022](https://openairdocs.org/ntsb/ANC16LA022), May 5, 2016: Airbus AS350 (N194EH), Juneau, AK, substantial damage. Probable cause: The pilot's failure to maintain terrain clearance while on approach to land in flat light conditions. Contributing to the severity of the pilot's injuries was the inadequately restrained internal… - [NTSB ERA16FA140](https://openairdocs.org/ntsb/ERA16FA140), Mar 26, 2016: Eurocopter AS 350 B2 (N911GF), Enterprise, AL, substantial damage, 4 fatal. Probable cause: The pilot's decision to perform visual flight rules flight into night instrument meteorological conditions, which resulted in loss of control due to spatial disorientation. Contributing to the… - [NTSB GAA15CA204](https://openairdocs.org/ntsb/GAA15CA204), Jul 29, 2015: Airbus AS350-B2 (N6095U), Tucson, AZ, substantial damage. Probable cause: The flight instructor's misperception of the helicopter's altitude in relation to the runway surface during a low altitude maneuver, resulting in ground impact. - [NTSB WPR15CA063](https://openairdocs.org/ntsb/WPR15CA063), Dec 16, 2014: Eurocopter AS 350 B2 Ecureuil (N352SL), Bicknell, UT, substantial damage. Probable cause: The pilot's failure to prevent the helicopter from settling with power while maneuvering at a low altitude, which resulted in a loss of control and subsequent hard landing. - [NTSB WPR15CA040](https://openairdocs.org/ntsb/WPR15CA040), Nov 13, 2014: Aerospatiale AS350BA (N425U), Panguitch, UT, substantial damage. Probable cause: The flight instructor's delayed reaction in taking control of the helicopter during a student pilot's loss of control while landing. - [NTSB WPR15TA027](https://openairdocs.org/ntsb/WPR15TA027), Oct 27, 2014: Eurocopter AS 350 (N5204X), Bisbee, AZ, substantial damage. Probable cause: Failure of maintenance personnel to ensure adequate torque of a pneumatic control pipe (P2) fitting, which resulted in a loss of engine power during low altitude flight maneuvers. - [NTSB WPR14CA375](https://openairdocs.org/ntsb/WPR14CA375), Sep 14, 2014: Eurocopter AS 350 B2 (N197BH), Kahului, Maui, HI, substantial damage. Probable cause: The pilot's failure to maintain clearance from the cart while hovering. Contributing to the accident was the failure of ground personnel to remove the cart from the helipad. - [NTSB WPR14FA324](https://openairdocs.org/ntsb/WPR14FA324), Aug 1, 2014: S.N.I.A.S. AS350B (N3597T), Tahoma, CA, substantial damage. Probable cause: The pilot's loss of helicopter control due to settling with power while maneuvering for takeoff. - [NTSB CEN14LA326](https://openairdocs.org/ntsb/CEN14LA326), Jun 27, 2014: Aerospatiale AS350B (N69PJ), Mayhill, NM, substantial damage. Probable cause: The pilot's failure to maintain helicopter control while performing a go-around in strong, gusting wind conditions. Contributing to the accident was the pilot's decision to initiate the flight in… - [NTSB CEN14CA252](https://openairdocs.org/ntsb/CEN14CA252), May 25, 2014: Aerospatiale AS 365 N2 Dauphin (N365WM), Constantine, MI, substantial damage. Probable cause: The pilot's loss of control while entering a vortex ring state (settling with power) condition, which resulted in a hard landing. - [NTSB ERA14CA009](https://openairdocs.org/ntsb/ERA14CA009), Oct 20, 2013: Eurocopter AS 350 B2 (N911ES), Madison, MS, substantial damage. Probable cause: The helicopter's collision with a black vulture during climb to cruise altitude. - [NTSB WPR13LA334](https://openairdocs.org/ntsb/WPR13LA334), Jul 22, 2013: Eurocopter AS 350 B2 (N115SH), Las Vegas, NV, substantial damage. Probable cause: The pilot receiving instruction's failure to maintain control of the helicopter in a hover, which resulted in a tail rotor ground strike. - [NTSB CEN13FA331](https://openairdocs.org/ntsb/CEN13FA331), Jun 8, 2013: Eurocopter AS 350 B3 (N106LN), Grand Prairie, TX, substantial damage. Probable cause: The pilot receiving instruction's failure to maintain adequate airspeed during a simulated hydraulics failure training maneuver, which resulted in his loss of control of the helicopter and its… - [NTSB CEN13FA192](https://openairdocs.org/ntsb/CEN13FA192), Mar 15, 2013: Sikorsky S-76A++ (N574EH), Grand Lake, LA, destroyed, 3 fatal. Probable cause: Fracture of the red tail rotor blade spar, which resulted in the separation and departure of the red tail rotor blade from the helicopter and subsequent compromised tail gearbox. The red tail rotor… - [NTSB WPR12FA282](https://openairdocs.org/ntsb/WPR12FA282), Jun 30, 2012: Aerospatiale AS350B (N729DP), Camp Verde, AZ, substantial damage, 4 fatal. Probable cause: The pilot's improper decision to fly at a low altitude through a river canyon, contrary to voluntary guidance within the Special Conservation Area, which led to collision with a cable. Contributing… - [NTSB DCA12MA020](https://openairdocs.org/ntsb/DCA12MA020), Dec 8, 2011: Eurocopter France AS350B2 (N37SH), Las Vegas, NV, destroyed, 5 fatal. Probable cause: Sundance Helicopters’ inadequate maintenance of the helicopter, including (1) the improper reuse of a degraded self-locking nut, (2) the improper or lack of installation of a split pin, and (3)… - [NTSB ANC12FA006](https://openairdocs.org/ntsb/ANC12FA006), Oct 30, 2011: Eurocopter AS 350 B2 (N165EH), Iliamna, AK, destroyed, 1 fatal. Probable cause: The pilot's loss of control due to sudden medical impairment or incapacitation. - [NTSB CEN12LA039](https://openairdocs.org/ntsb/CEN12LA039), Oct 7, 2011: Eurocopter AS 350 B2 (N183EH), South Pass 93A, substantial damage. Probable cause: Improper centering of the cyclic during a start in gusty wind conditions. - [NTSB ERA11CA433](https://openairdocs.org/ntsb/ERA11CA433), Jul 30, 2011: Eurocopter AS 350 B3 (N413LP), Humacao, PR, substantial damage. Probable cause: The pilot's failure to maintain clearance from a building during landing. - [NTSB ERA11LA278](https://openairdocs.org/ntsb/ERA11LA278), May 3, 2011: Aerospatiale AS350B2 (N916AM), Camden, SC, substantial damage. Probable cause: The instructor pilot did not maintain adequate helicopter control while maneuvering, which resulted in a hard landing. - [NTSB CEN10FA424](https://openairdocs.org/ntsb/CEN10FA424), Jul 23, 2010: Eurocopter AS 350 B2 (N918EM), Kingfisher, OK, substantial damage, 2 fatal. Probable cause: The pilot’s impaired judgment, due to medications, which led to an abrupt low-level maneuver and subsequent impact with trees and terrain. - [NTSB ERA10TA142](https://openairdocs.org/ntsb/ERA10TA142), Feb 12, 2010: Eurocopter AS 365 N2 Dauphin (N61MD), Cheverly, MD, substantial damage. Probable cause: Incomplete clearing of snow from the helipad and vicinity. Contributing to the accident was the lack of a NOTAM regarding the presence of snow banks and the pilot's failure to ensure that the… - [NTSB CEN10FA113](https://openairdocs.org/ntsb/CEN10FA113), Feb 6, 2010: Aerospatiale AS350 (N157BC), El Paso, TX, substantial damage, 3 fatal. Probable cause: The pilot's loss of situational awareness resulting in controlled flight into terrain. Contributing to the accident was the pilot's unfamiliarity with the hazards of a low-contrast area while using… - [NTSB WPR10LA046](https://openairdocs.org/ntsb/WPR10LA046), Nov 5, 2009: Eurocopter AS350BA (N617LH), Globe, AZ, substantial damage. Probable cause: The pilot receiving instruction’s failure to maintain adequate airspeed or control of the helicopter during a simulated hydraulic failure maneuver, which resulted in a hard landing. Contributing to… - [NTSB ERA09FA537](https://openairdocs.org/ntsb/ERA09FA537), Sep 26, 2009: Eurocopter AS-350 (N417AE), Georgetown, SC, destroyed, 3 fatal. Probable cause: The pilot’s decision to continue the visual flight rules flight into an area of instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and a loss of control of the… - [NTSB WPR09CA462](https://openairdocs.org/ntsb/WPR09CA462), Sep 22, 2009: Agusta A109 (N129AL), Page, AZ, substantial damage. Probable cause: A total loss of engine power due to fuel exhaustion as a result of the pilot's inadequate in-flight planning and his decision to continue flight with a known low fuel level state. - [NTSB WPR09GA397](https://openairdocs.org/ntsb/WPR09GA397), Aug 13, 2009: Eurocopter AS 350 B2 (N217LA), Lancaster, CA, substantial damage. Probable cause: The pilots’ decision to conduct a practice autorotation at low altitude in high density altitude conditions and their failure to attain and maintain an appropriate descent rate. Contributing to the… - [NTSB ERA09MA447](https://openairdocs.org/ntsb/ERA09MA447), Aug 8, 2009: Eurocopter AS 350 BA (N401LH), Hoboken, NJ, substantial damage, 9 fatal. Probable cause: (1) the inherent limitations of the see-and-avoid concept, which made it difficult for the airplane pilot to see the helicopter until the final seconds before the collision, and (2) the Teterboro… - [NTSB ANC09LA031](https://openairdocs.org/ntsb/ANC09LA031), Apr 13, 2009: Aerospatiale AS350 B2 E (N208CH), Haines, AK, substantial damage. Probable cause: The pilot's failure to maintain clearance from snow-covered terrain during the landing approach in flat light conditions. - [NTSB WPR09CA148](https://openairdocs.org/ntsb/WPR09CA148), Mar 8, 2009: Eurocopter AS350BA (N234AH), Long Beach, CA, substantial damage. Probable cause: The pilot's misjudged speed and altitude, which resulted in an undershoot of the landing zone. - [NTSB WPR09FA072](https://openairdocs.org/ntsb/WPR09FA072), Jan 5, 2009: Eurocopter AS 350 BA (N141MK), Honolulu, HI, substantial damage. Probable cause: The partial loss of engine power during landing for an undetermined reason. - [NTSB ANC08CA129](https://openairdocs.org/ntsb/ANC08CA129), Sep 28, 2008: Eurocopter AS 350 B2 (N352EV), Kenai, AK, substantial damage. Probable cause: The pilot's failure to maintain tail rotor clearance from the safety netting during final approach and landing. - [NTSB MIA08LA106](https://openairdocs.org/ntsb/MIA08LA106), May 21, 2008: Eurocopter France AS350 B2 (N417AE), Hiram, GA, substantial damage. Probable cause: The failure of the starflex arm during engine run-up due to inadequate inspection by maintenance personnel. - [NTSB ANC08FA053](https://openairdocs.org/ntsb/ANC08FA053), Apr 15, 2008: Eurocopter AS 350 B2 (N213EH), Chickaloon, AK, substantial damage, 4 fatal. Probable cause: An in-flight overtorque of the engine-to-transmission driveshaft resulting in disconnection of the main transmission from the engine. The overtorque likely occurred due to an in-flight main rotor… - [NTSB MIA08CA072](https://openairdocs.org/ntsb/MIA08CA072), Mar 4, 2008: Eurocopter France AS350B1 (N152TA), Linden, NJ, substantial damage. Probable cause: The pilot's improper preflight preparation and his failure to maintain control of the helicopter. - [NTSB ANC08FA025](https://openairdocs.org/ntsb/ANC08FA025), Dec 3, 2007: Eurocopter Deutschland BK117C1 (N141LG), Whittier, AK, substantial damage, 4 fatal. Probable cause: The pilot's decision to continue VFR flight into night instrument meteorological conditions. Contributing to the accident were the operator's failure to adhere to an FAA-approved and mandated safety… - [NTSB LAX07MA231](https://openairdocs.org/ntsb/LAX07MA231), Jul 27, 2007: Eurocopter AS350-B2 (N613TV), Phoenix, AZ, destroyed, 4 fatal. Probable cause: Both pilots' failure to see and avoid the other helicopter. Contributing to this failure was the pilots' responsibility to perform reporting and visual tracking duties to support their station's ENG… - [NTSB LAX07IA115](https://openairdocs.org/ntsb/LAX07IA115), Mar 28, 2007: Eurocopter AS 350 BA (N4010K), Kahului, HI, incident, minor damage. Probable cause: The loss of tail rotor control due to wear damage to the pitch control input rod that resulted ultimately in the fatigue failure of the upper support yoke arm. Contributing factors were the improper… - [NTSB NYC07MA073](https://openairdocs.org/ntsb/NYC07MA073), Mar 9, 2007: Aerospatiale AS350BA (N354NT), Princeville, HI, substantial damage, 4 fatal. Probable cause: The failure of maintenance personnel to properly tighten (torque) the flight control servo lower attachment clevis, and reinstall a functioning lock washer, which resulted in a flight control… - [NTSB ANC06LA100](https://openairdocs.org/ntsb/ANC06LA100), Jul 27, 2006: Eurocopter AS 350B2 (N301TH), Skagway, AK, substantial damage. Probable cause: The pilot's failure to maintain adequate clearance from trees while hovering, which resulted in a main rotor strike with trees, an uncontrolled descent, and a collision with terrain. - [NTSB ANC06LA044](https://openairdocs.org/ntsb/ANC06LA044), Apr 6, 2006: Aerospatiale AS-350BA (N209CH), Haines, AK, substantial damage. Probable cause: The pilot's failure to maintain adequate clearance from an object while landing a helicopter at a remote site, which resulted in the main rotor blades striking a tree. - [NTSB DFW06CA062](https://openairdocs.org/ntsb/DFW06CA062), Jan 26, 2006: Eurocopter France AS-350-B2 (N911ES), Port Isabel, TX, substantial damage. Probable cause: The pilot's failure to maintain rotor RPM and his improper touchdown during a simulated hovering autorotation. A contributing factor was the flight instructor's delayed remedial action. - [NTSB LAX06LA072](https://openairdocs.org/ntsb/LAX06LA072), Jan 10, 2006: Eurocopter AS350BA (N3607P), Hana, HI, destroyed. Probable cause: The total loss of engine power due to a fatigue failure of a turbine blade. A factor in the accident was the lack of a suitable forced landing site. All 113: https://openairdocs.org/engine/turbomeca-arriel-1ser/ntsb.md ## FAA accident and incident reports (163, newest 50) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20250519006459A](https://openairdocs.org/incident/20250519006459A), May 19, 2025: Eurocopter Deutschland Gmbh MBB-BK 117 C-1 (N117NC), Fort Washington, PA, Substantial damage. During cruise flight, pilot experienced a sudden yaw and loss of tail rotor control and initiated an emergency autorotation descent and landing in a… - [Incident 20200825020129I](https://openairdocs.org/incident/20200825020129I), Aug 25, 2020: Sikorsky S-76C (N276TH), Palm Beach, FL, Minor damage. Part 135 certificate [privacy data omitted] operating, Sikorsky S-76C, N276TH was performing maintenance flight while taxing back to rank the right main… - [Accident 20191226014219A](https://openairdocs.org/incident/20191226014219A), Dec 26, 2019: Eurocopter AS 350 B2 (N985SA), Kokee, HI, Destroyed, 7 fatal. On December 26, about 1657 Hawaii standard time, an Airbus AS350 B2 helicopter, N985SA, was destroyed by impact forces and a post-crash fire when it collided… - [Incident 20190703009079I](https://openairdocs.org/incident/20190703009079I), Jul 3, 2019: Aerospatiale AS350B2 (N279CH), Juneau, AK, No damage. The pilot was sling loading a snowmachine to the company ramp. While maneuvering to avoid the sida area the snowmachine made contact with and damaged a taxiway… - [Accident 20190427003489A](https://openairdocs.org/incident/20190427003489A), Apr 27, 2019: Aerospatiale AS350 B2 ECUREUIL (N288CH), Juneau, AK, Substantial damage. On April 27, 2019, N288CH, an Aerospatiale AS350-B2, was substantially damaged when the tail rotor struck terrain during a landing on top of a mountain… - [Accident 20180518004389A](https://openairdocs.org/incident/20180518004389A), May 18, 2018: Aerospatiale AS350 B2 ECUREUIL (N288CH), Yakutat, AK, Substantial damage. The part 135 flight departed from juneau on 18MAY2018 at 12:51 AKDT to service a us coast guard radio facility on the 2200' level deception hills located near… - [Accident 20170221001339A](https://openairdocs.org/incident/20170221001339A), Feb 21, 2017: Eurocopter AS 350 B3 (N413LP), San Juan, PR, Substantial damage. On February 21, 2017 the PIC of an Eurocopter executed an autorotation after noticed that the engine RPM continued to increase and exceeded limitations with… - [Accident 20160505006079A](https://openairdocs.org/incident/20160505006079A), May 5, 2016: Eurocopter AS 350 B2 (N194EH), Juneau, AK, Substantial damage. The aircraft departed Juneau and was en route to a dog camp when it crashed on flat, snow-covered terrain about ¾ mile from the dog camp. The pilot, sole… - [Accident 20160326002379A](https://openairdocs.org/incident/20160326002379A), Mar 26, 2016: Eurocopter AS 350 B2 (N911GF), Enterprise, AL, Destroyed, 4 fatal. ? March 26, 2016, about 1:30 am central time, N911GF, a Eurocopter AS350-B2 helicopter, operating as a part 135 air ambulance flight by haynes life flight,… - [Incident 20160217024109I](https://openairdocs.org/incident/20160217024109I), Feb 17, 2016: Eurocopter Deutschland Gmbh MBB-BK 117 C-2 (N766ME), San Bernardino, CA, Minor damage. N766ME, a mbb-bk 117 C-2, made a hard landing from a hover on the transient ramp at San Bernardino airport (sbd). Minor damage caused to helicopter's vertical… - [Accident 20150729023209A](https://openairdocs.org/incident/20150729023209A), Jul 29, 2015: Eurocopter AS 350 B2 ECUREUIL (N6095U), Tucson, AZ, Substantial damage. Instructor was demonstrating auto-rotation technique to pilot over rwy 24R at ryn. During the procedure the instructor was not able to arrest descent and… - [Incident 20150402003769I](https://openairdocs.org/incident/20150402003769I), Apr 2, 2015: Eurocopter AS 350 B2 (N5204G), Spring, TX, Minor damage. At or about 2230 on April 2, 2015, a department of homeland security AS350 struck some birds 8 miles west of David Wayne Hooks Airport. It was reported that… - [Accident 20141216021289A](https://openairdocs.org/incident/20141216021289A), Dec 16, 2014: Eurocopter AS 350 B2 ECUREUIL (N352SL), Bicknell, UT, Substantial damage. Aircraft was herding antelope off airport and settled with power resulting in a hard landing. The result was substantial damage to the tail boom and fuselage… - [Accident 20141113020369A](https://openairdocs.org/incident/20141113020369A), Nov 13, 2014: Aerospatiale AS350BA (N425U), Panguitch, UT, Substantial damage. Student pilot lost control of the helicopter while performing a simulated hydraulic failure emergency approach to land. CFI took controls and was unable to… - [Accident 20141027021109A](https://openairdocs.org/incident/20141027021109A), Oct 27, 2014: Eurocopter AS 350 B2 (N5204X), Sierra Vista, AZ, Substantial damage. On October 27, 2014, while conducting surveillance operations for the us customs and border patrol near Sierra Vista Arizona, N5204X experienced a loss of… - [Accident 20140913019729A](https://openairdocs.org/incident/20140913019729A), Sep 13, 2014: Eurocopter AS 350 B2 (N197BH), Kahului, HI, Substantial damage. Personnel were conducting a series of maintenance flights to track and balance the main rotor. The pilot completed several flights and start ups before the… - [Accident 20140801013139A](https://openairdocs.org/incident/20140801013139A), Aug 1, 2014: S.N.I.A.S. AS350B ASTAR (N3597T), Tahoma, CA, Substantial damage. The pilot was departing a remote landing zone in mountainous terrain. During the turning departure, the pilot believes he encountered a downdraft, causing the… - [Incident 20140628010529I](https://openairdocs.org/incident/20140628010529I), Jun 28, 2014: Eurocopter AS 350 B2 (N567NA), Homer, AK, No damage. While in a climb the aircraft warning horn sounded and the red hydraulic warning light illuminated. Pilot initiated aircraft emergency procedures and safely… - [Accident 20140627009869A](https://openairdocs.org/incident/20140627009869A), Jun 27, 2014: Aerospatiale AS350B (N69PJ), Mayhill, NM, Substantial damage. During a go-around, N69PJ was caught in a down draft and was unable to recover. N69PJ made a hard landing and substantially damaged the helicopter. Pilot and… - [Accident 20140525006799A](https://openairdocs.org/incident/20140525006799A), May 25, 2014: Aerospatiale AS 365 N2 DAUPHIN (N365WM), Constantine, MI, Substantial damage. While approaching the high school parking lot being used in this case as a landing site to pick up a patient, upon reaching treetop level the descent rate… - [Accident 20131020020489A](https://openairdocs.org/incident/20131020020489A), Oct 20, 2013: Eurocopter AS 350 B2 (N911ES), Canton, MS, Substantial damage. The pilot stated he was in cruise at level flight and suffered a bird strike. He made an emergency landing. - [Accident 20130722013009A](https://openairdocs.org/incident/20130722013009A), Jul 22, 2013: Eurocopter AS 350 B2 (N115SH), Las Vegas, NV, Substantial damage. At approximately 7:15 am local time on 7-22-2013, N115SH, an AS-350-B2 helicopter, with a company instructor and pilot aboard struck the tail rotor during a… - [Accident 20130607013579A](https://openairdocs.org/incident/20130607013579A), Jun 7, 2013: Eurocopter AS 350 B3 (N106LN), Grand Praire, TX, Substantial damage. On 06/07/2013 at 2140 local time an Eurocopter as 350 B3, owned by cfs air LLC., operated by qmla air methods under part 135. Was involved in an accident after… - [Accident 20130315005139A](https://openairdocs.org/incident/20130315005139A), Mar 15, 2013: Sikorsky S-76A (N574EH), Cameron, LA, Destroyed, 3 fatal. Helicopter took off at 1119 from lch for a maintenance check flight. During the flight, the pilot called lch tower and era helicopter communications center to… - [Incident 20121216029179I](https://openairdocs.org/incident/20121216029179I), Dec 16, 2012: Eurocopter Deutschland Gmbh MBB-BK 117 C-2 (N145FH), Kissimmee, FL, Minor damage. On December 16 2012 at approximately 2020 EDT a MBB-BK-117 C2, N145FH registered to Florida hospital medical center, operated by metro aviation, and piloted by… - [Accident 20120630012159A](https://openairdocs.org/incident/20120630012159A), Jun 30, 2012: Aerospatiale AS350BA (N729DP), Camp Verde, AZ, Destroyed, 4 fatal. On June 30, 2012, helicopter N729DP, an AS350BA, was reported missing by concerned family members. Apparently, on 6/30/12, at 08:25 local time, pilot and owner… - [Accident 20111207028539A](https://openairdocs.org/incident/20111207028539A), Dec 7, 2011: Eurocopter France AS350B2 (N37SH), Las Vegas, NV, Destroyed, 5 fatal. The aircraft came out of 100 hour inspection, inspected and signed off to fly. Test flown by maintenance pilot and released to fly air tours. The aircraft flew… - [Accident 20111029027949A](https://openairdocs.org/incident/20111029027949A), Oct 29, 2011: Eurocopter AS 350 B2 (N165EH), Iliamna, AK, Substantial damage, 1 fatal. On 10/29/2011, approximately 2009 ast, the PIC of an AS350 helicopter, allowed the helicopter to impact the ground approximately 8.0 miles southwest of… - [Incident 20111007023849I](https://openairdocs.org/incident/20111007023849I), Oct 7, 2011: Eurocopter AS 350 B2 (N183EH), Minor damage. During start-up Offshore one main rotor blade flexed down and made contact with the tailboom. Aircraft was shut down and maintenance was called. - [Incident 20110619012929I](https://openairdocs.org/incident/20110619012929I), Jun 19, 2011: Eurocopter AS 350 B2 (N115SH), AZ, Minor damage. The airman was decending through eternity Canyon on the way to the beach landing area located in the west end of the Grand Canyon. The airman stated that he… - [Accident 20110503008829A](https://openairdocs.org/incident/20110503008829A), May 3, 2011: Aerospatiale AS350 B2 ECUREUIL (N916AM), Camden, SC, Substantial damage. On may 3, 2011, at 21:00 eastern daylight time, the chief pilot of air methods corp. contacted the FAA and reported an Aerospatiale AS350B2 helicopter, N916AM,… - [Accident 20100722049609A](https://openairdocs.org/incident/20100722049609A), Jul 22, 2010: Eurocopter AS 350 B2 (N918EM), Kingfisher, OK, Destroyed, 2 fatal. On July 22, 2010, approximately 1925 central daylight time, a Eurocopter as 350 B2, N918EM, owned and operated by eaglemed LLC, was destroyed upon impact with… - [Incident 20100520005709I](https://openairdocs.org/incident/20100520005709I), May 20, 2010: Eurocopter MBB-BK 117 (N117UP), Philadelphia, PA, No damage. Hems operator air methods (qlma) BK-117 performed a precautionary landing in an open field, due to a tail rotor gear box chip indication light. - [Incident 20100505033159I](https://openairdocs.org/incident/20100505033159I), May 5, 2010: Eurocopter AS 350 BA (N601H), Kahului, HI, No damage. Made a non-emergency precautionary landing on runway 2 due to a hydraulic problem. Helicopter shut down on runway. The four passengers were shuttled to the… - [Incident 20100411033509I](https://openairdocs.org/incident/20100411033509I), Apr 11, 2010: Eurocopter AS 350 B3 (N405AE), Ketchikan, AK, Substantial damage. While attempting to land an AS-350-B3 in a confined area on high mountain pilot [privacy data omitted] contacted a solar panel with a main rotor blade ,… - [Incident 20100401033339I](https://openairdocs.org/incident/20100401033339I), Apr 1, 2010: Aerospatial AS 365 N2 D (N886TW), Linden, NJ, Minor damage. The helicopter landed gear up at Linden Airport, (kldj), Linden, NJ. The pilot in command (PIC) stated while entering the traffic pattern he was distracted… - [Incident 20100222029149I](https://openairdocs.org/incident/20100222029149I), Feb 22, 2010: Eurocopter AS 350 BA (N7QK), San Jose, CA, No damage. The pilot contacted sjc tower three miles north of San Jose airport and reported a hydraulic failure. The pilot landed at San Jose airport on taxiway victor. - [Accident 20100211027939A](https://openairdocs.org/incident/20100211027939A), Feb 11, 2010: Eurocopter AS 365 N2 D (N61MD), Cheverly, MD, Substantial damage. Public use msp helicopter N61MD delivered a patient to prince george general hospital and landed with the tail of the aircraft laying on a snow bank. When the… - [Accident 20100205027079A](https://openairdocs.org/incident/20100205027079A), Feb 5, 2010: Aerospatial AS350 B2 EC (N157BC), El Paso, TX, Destroyed, 3 fatal. Pilot departed elp on a contract training mission required by DOD for a simulated med/evac operation. Mission consisted of enroute operation to unlighted lz,… - [Incident 20091104050999I](https://openairdocs.org/incident/20091104050999I), Nov 4, 2009: S.N.I.A.S. AS350BA (N165AM), Council Bluffs, IA, Minor damage. N165AM launched from kcbf at approximately 1814 CST on 11/04/2009 for a patient pick-up in lewis township Iowa near the intersection of cardinal lane and… - [Accident 20091104022399A](https://openairdocs.org/incident/20091104022399A), Nov 4, 2009: Snias AS350BA (N617LH), Globe, AZ, Substantial damage. As stated by pilots, while performing NVG hydraulic off maneuvers, instructor (mark friskel) activated the aircrafts hydraulic test switch to simulate a… - [Accident 20090925025539A](https://openairdocs.org/incident/20090925025539A), Sep 25, 2009: Eurocopter AS 350 B2 E (N417AE), Georgetown, SC, Destroyed, 3 fatal. The flight crew landed chareston, SC (kchs)for a medical drop off. The pilot refueled and check weather for conway, SC. He check radar and saw a line of… - [Accident 20090922019379A](https://openairdocs.org/incident/20090922019379A), Sep 22, 2009: Agusta A109K2 (N129AL), Page, AZ, Substantial damage. The aircraft ran out of fuel and made a forced landing in the baseball field at Page high school, located in Page, AZ. Block 22- omniflight operates all… - [Accident 20090813016199A](https://openairdocs.org/incident/20090813016199A), Aug 13, 2009: Euroco AS350B2 (N217LA), Lancaster, CA, Destroyed. (-23) On August 13, 2009 an lapd air support division helicopter was performing auto rotation training at fox field Lancaster, CA. N217LA a Eurocopter… - [Accident 20090808017851A](https://openairdocs.org/incident/20090808017851A), Aug 8, 2009: Snias AS350BA (N401LH), Hoboken, NJ, Destroyed, 9 fatal. A Eurocopter AS350BA helicopter, N401LH,operated by liberty helicopters flight tours and a privately operated Piper lance, N71MC, were destroyed following a… - [Incident 20090516006569I](https://openairdocs.org/incident/20090516006569I), May 16, 2009: Snias AS350B3 (N394LG), Simla, CO, Minor damage. (-23) Duck came through chin bubble. Aircraft landed immediately and called for second aircraft to transport patient. Simla fire and police secured aircraft… - [Accident 20090412046999A](https://openairdocs.org/incident/20090412046999A), Apr 12, 2009: Aerospatial AS350 B2 EC (N208CH), Haines, AK, Substantial damage. On April 12, 2009, about 1800 Alaska daylight time, an aerospatiale AS-350 B2 helicopter, N208CH, operated by coastal helicopters, juneau, Alaska as a part 91… - [Incident 20090313004479I](https://openairdocs.org/incident/20090313004479I), Mar 13, 2009: Aerosp AS365N2 (N886TW), Linden, NJ, Substantial damage. (-23) Per the pilot's attached statement: "while on a ground run in front of the hangar at idle all systems were working properly without any lights. Suddenly… - [Accident 20090307003859A](https://openairdocs.org/incident/20090307003859A), Mar 7, 2009: Snias AS350BA (N234AH), Long Beach, CA, Substantial damage. (-23) The pilot made a high speed low angle approach to the company helipad and while making an exaggerated flare to lose airspeed and position the aircraft… - [Accident 20090105001959A](https://openairdocs.org/incident/20090105001959A), Jan 5, 2009: Snias AS350BA (N141MK), Honolulu, HI, Substantial damage. (-23) The aircraft was slightly above the ridge line and approximately 5 to 7 feet away from the landing zone at the wiliwilinui ridge electronic tower site… All 163: https://openairdocs.org/engine/turbomeca-arriel-1ser/incidents.md --- 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.