# Major NTSB investigations: In flight encounter with weather 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 · 51 cases ## Latest cases - [NTSB LAX08MA007](https://openairdocs.org/ntsb/LAX08MA007.md): Cessna 208B · Naches, WA · Accident · 10 fatal · Major investigation · Final report · Oct 8, 2007 · N430A · Destroyed > The pilot's failure to maintain an adequate airspeed to avoid an aerodynamic stall while maneuvering. Contributing to the accident were the pilot's impaired physiological state due to hypoxia, the pilot's inadequate preflight weather evaluation, and his… - [NTSB DEN06MA119](https://openairdocs.org/ntsb/DEN06MA119.md): Mitsubishi MU-2B-35 · Argyle, FL · Accident · 1 fatal · Major investigation · Final report · Sep 1, 2006 · N6569L · Destroyed > the pilot's inadvertent flight into thunderstorm activity that resulted in the loss of control, design limits of the airplane being exceeded and subsequent in-flight breakup. A contributing factor was the failure of air traffic control to use available radar… - [NTSB NYC06MA208](https://openairdocs.org/ntsb/NYC06MA208.md): Mitsubishi MU-2B-40 · Bunnell, FL · Accident · 2 fatal · Major investigation · Final report · Aug 25, 2006 · N171MA · Destroyed > The pilot's inadvertent encounter with thunderstorms. - [NTSB CHI06MA115](https://openairdocs.org/ntsb/CHI06MA115.md): Cessna 210A · Ludville, GA · Accident · 1 fatal · Major investigation · Final report · Apr 19, 2006 · N6579X · Destroyed > The pilot's failure to obtain updated en route weather information, which resulted in his continued instrument flight into a widespread area of severe convective activity, and the air traffic controller's failure to provide adverse weather avoidance… - [NTSB SEA05MA199](https://openairdocs.org/ntsb/SEA05MA199.md): Aerospatiale AS350BA · Haena, HI · Accident · 3 fatal · Class 1 · Major · Final report · Sep 24, 2005 · N355NT · Substantial damage > The pilot's decision to continue flight into adverse weather conditions, which resulted in a loss of control due to an encounter with a microburst. Contributing to the accident was inadequate Federal Aviation Administration surveillance of Special Federal… - [NTSB DCA05MA083](https://openairdocs.org/ntsb/DCA05MA083.md): Boeing 767-232 · Raleigh-Durham, NC · Accident · Serious injuries · Major investigation · Final report · Jul 11, 2005 · N113DA · No damage > An inadvertent in-flight encounter with clear air turbulence. - [NTSB NYC05MA083](https://openairdocs.org/ntsb/NYC05MA083.md): Boeing 717-200 · Union Star, MO · Incident · No injuries · Major investigation · Final report · May 13, 2005 · N910ME · No damage > A loss of reliable airspeed indication due to an accumulation of ice on the air data/pitot sensors. Contributing to the incident was the flight crew's improper response to the erroneous airspeed indications, their lack of coordination during the initial… - [NTSB LAX05FA015](https://openairdocs.org/ntsb/LAX05FA015.md): Learjet 35A · San Diego, CA · Accident · 5 fatal · Class 1 · Field · Final report · Oct 24, 2004 · N30DK · Destroyed > The failure of the flight crew to maintain terrain clearance during a VFR departure, which resulted in controlled flight into terrain, and the air traffic controller's issuance of a clearance that transferred the responsibility for terrain clearance from the… - [NTSB LAX04FA329](https://openairdocs.org/ntsb/LAX04FA329.md): Bell 206B · Kalaheo, HI · Accident · 5 fatal · Class 1 · Field · Final report · Sep 25, 2004 · N16849 · Destroyed > The pilot's decision to continue flight under visual flight rules into an area of turbulent, reduced visibility weather conditions, which resulted in the pilot's spatial disorientation and loss of control of the helicopter. Contributing to this accident was… - [NTSB SEA04MA167](https://openairdocs.org/ntsb/SEA04MA167.md): Bell 407 · Battle Mountain, NV · Accident · 5 fatal · Major investigation · Final report · Aug 22, 2004 · N2YN · Destroyed > The pilot's failure to maintain clearance from mountainous terrain. Contributing factors were the pilot's improper decision to take the direct route over mountainous terrain, the dark night conditions, and the pressure to complete the mission induced by the… - [NTSB DCA04MA061](https://openairdocs.org/ntsb/DCA04MA061.md): Boeing 777 · Miami, FL · Accident · Serious injuries · Major investigation · Final report · Jul 25, 2004 · N797AN · No damage > the in-flight encounter with unforecasted clear air turbulence. - [NTSB CHI04MA182](https://openairdocs.org/ntsb/CHI04MA182.md): Bell 407 · Newberry, SC · Accident · 4 fatal · Major investigation · Final report · Jul 13, 2004 · N503MT · Destroyed > The pilot's failure to maintain terrain clearance as a result of fog conditions. A contributing factor was inadequate weather and dispatch information relayed to the pilot. - [NTSB DCA02MA029](https://openairdocs.org/ntsb/DCA02MA029.md): McDonnell Douglas DC-10-30 · int'l waters · Accident · Serious injuries · Major investigation · Final report · Mar 22, 2002 · N234NW · Minor damage > The flight attendant's injuries were a result of her unsecured lap belt and shoulder harness for undetermined reasons, and the oscillations of the airplane, which were caused by turbulence and large control column inputs by the first officer. Contributing to… - [NTSB LAX00MA273](https://openairdocs.org/ntsb/LAX00MA273.md): Aerospatiale AS 355F1 · Kahului, Maui, HI · Accident · 7 fatal · Major investigation · Final report · Jul 21, 2000 · N510TG · Destroyed > The pilot's inadequate decision by which he continued visual flight rules flight into instrument meteorological conditions. Also causal was his failure to maintain terrain clearance resulting in a collision with mountainous terrain. A contributing factor was… - [NTSB DCA98MA045](https://openairdocs.org/ntsb/DCA98MA045.md): Douglas DC-9-32 · Calhoun, GA · Accident · Serious injuries · Major investigation · Final report · May 7, 1998 · N948VV · Substantial damage > The failure of the flight crew to maintain adequate separation from hazardous meteorological conditions. Factors contributing to the accident were: (1) the failure of AirTran Airlines to provide adequate crewmember training and guidance regarding hazardous… - [NTSB DCA98MA015](https://openairdocs.org/ntsb/DCA98MA015.md): Boeing 747-122 · Pacific Ocean (Pacific Ocean) · Accident · 1 fatal · Major investigation · Final report · Dec 28, 1997 · N4723U · Minor damage > The pilot-in-command's inadvertent flight into adverse weather conditions, and the difficulty of obtaining adequate weather forecasts of over-ocean turbulence. Factors contributing to the accident include the presence of clear air turbulence, and the failure… - [NTSB DCA98MA002](https://openairdocs.org/ntsb/DCA98MA002.md): Cessna 208B · Montrose, CO · Accident · 9 fatal · Major investigation · Final report · Oct 8, 1997 · N12022 · Destroyed > the pilot's failure to maintain sufficient airspeed for undetermined reasons while maneuvering the airplane near the maximum gross weight and aft cg in or near instrument meteorological conditions, resulting in the loss of control and entry into a stall/spin.… - [NTSB SEA96MA043](https://openairdocs.org/ntsb/SEA96MA043.md): Mitsubishi MU-2B-36 · Malad City, ID · Accident · 8 fatal · Major investigation · Final report · Jan 15, 1996 · N693PA · Destroyed > continued flight by the flightcrew into icing conditions with known faulty deice equipment; structural (airframe) ice; and failure of the flight crew to maintain adequate airspeed, which resulted in the loss of aircraft control and collision with terrain. A… - [NTSB DCA94GA010](https://openairdocs.org/ntsb/DCA94GA010.md): Beech 300/F · Front Royal, VA · Accident · 3 fatal · Class 1 · Final report · Oct 26, 1993 · N82 · Destroyed > the failure of the pilot-in-command to ensure that the airplane remained in visual meteorological conditions over mountainous terrain, and the failure of the Federal Aviation Administration executives and managers responsible for the FAA flying program to:… - [NTSB ATL93MA068](https://openairdocs.org/ntsb/ATL93MA068.md): Fairchild SA227-TT · Blountville, TN · Accident · 4 fatal · Major investigation · Final report · Apr 2, 1993 · N500AK · Destroyed > Failure of the pilot to follow procedures concerning use of the engine inlet anti-ice system and/or continuous ignition while operating in icing conditions, which resulted in probable ice ingestion and loss of engine power; and the pilot's failure to maintain… - [NTSB DCA93MA033](https://openairdocs.org/ntsb/DCA93MA033.md): Boeing 747-121 · Anchorage, AK · Accident · No injuries · Class 1 · Major · Final report · Mar 31, 1993 · N473EV · Substantial damage > The lateral separation of the no. 2 engine pylon due to an encounter with severe or possibly extreme turbulence that resulted in dynamic multi-axis lateral loadings that exceeded the ultimate lateral load-carrying capability of the pylon, which was already… - [NTSB LAX92MA184](https://openairdocs.org/ntsb/LAX92MA184.md): Beech E18S · Mount Haleakala, HI · Accident · 9 fatal · Class 1 · Major · Final report · Apr 23, 1992 · N342E · Destroyed > The captain's decision to continue visual flight into instrument meteorological conditions that obscured rising mountainous terrain and his failure to properly use available navigational information to remain clear of the island of maui. Contributing to the… - [NTSB DCA92MA011](https://openairdocs.org/ntsb/DCA92MA011.md): Beech 400 · Rome, GA · Accident · 9 fatal · Major investigation · Final report · Dec 11, 1991 · N25BR · Destroyed > The captain's decision to initiate visual flight into an area of known mountainous terrain and low ceilings and the failure of the flightcrew to maintain awareness of their proximity to the terrain. - [NTSB DCA91MA019](https://openairdocs.org/ntsb/DCA91MA019.md): British Aerospace 3101 · Beckley, WV · Accident · Serious injuries · Major investigation · Final report · Jan 31, 1991 · N167PC · Destroyed > Flight into known adverse weather conditions by the pilot, which resulted in ice accumulation on the aircraft and subsequent loss of aircraft control (tail plane stall) as the flaps were fully extended. Factors related to the accident were: the pilot's… - [NTSB DCA90MA011](https://openairdocs.org/ntsb/DCA90MA011.md): British Aerospace BAE-3101 · Pasco, WA · Accident · 6 fatal · Class 1 · Major · Final report · Dec 27, 1989 · N410UE · Destroyed > The flightcrew's decision to continue an unstabilized instrument landing system (ILS) approach that led to a stall, most likely of the horizontal stabilizer, and loss of control at low altitude. Contributing to the accident was the air traffic controller's… - [NTSB DCA90MA005](https://openairdocs.org/ntsb/DCA90MA005.md): De Havilland DHC-6-300 · Halawa,Molokai, HI · Accident · 20 fatal · Class 1 · Major · Final report · Oct 29, 1989 · N707PV · Destroyed > The airplane's controlled flight into terrain as a result of the decision of the captain to continue flight under visual flight rules at night into instrument meteorological conditions (IMC), which obscured rising mountainous terrain. Contributing to the… - [NTSB DCA89MA026](https://openairdocs.org/ntsb/DCA89MA026.md): Cessna 402B · Corona, CA · Accident · 10 fatal · Major investigation · Final report · Feb 19, 1989 · N69383 · Destroyed > The pilot's failure to properly preflight and plan for flight and his intentional flight into IMC conditions. Factors contributing to the accident were the low ceiling conditions in conjunction with the mountainous terrain. - [NTSB MIA89MA023](https://openairdocs.org/ntsb/MIA89MA023.md): Rockwell 1121A · Oak Grove, PA · Accident · 3 fatal · Major investigation · Final report · Nov 2, 1988 · N44 · Destroyed > Failure of the pilot in command to observe the rapid accretion of ice on the airplane due to his attention being diverted. - [NTSB MIA87MA064](https://openairdocs.org/ntsb/MIA87MA064.md): Cessna T210N · Jasper, FL · Accident · 6 fatal · Major investigation · Final report · Jan 1, 1987 · N5498A · Destroyed > Drg flt in an area of IFR conditions & rain showers, the plt reqd & recd clnc to dscnd from 9000' to 7000'. Later, he recd clnc for further dscnt to 5000'. After a freq chg at 2237 EST, the plt inquired about radar indcns of adverse wxahead. The ctlr adzd… - [NTSB SEA87MA034](https://openairdocs.org/ntsb/SEA87MA034.md): Bell 206L-1 · Pendleton, OR · Accident · 3 fatal · Major investigation · Final report · Dec 4, 1986 · N7EC · Destroyed > The helicopter departed Pendleton on an emerg med svc/med-evac (EMS) flt to transport a patient to portland. After delivering the patient, the plt took off on the rtn flt with 2 med psnl aboard. Drg arrival at 1658 PST, he requested a special VFR (svfr)… - [NTSB ATL87MA035](https://openairdocs.org/ntsb/ATL87MA035.md): Bell 206L-1 · Jamestown, TN · Accident · 4 fatal · Major investigation · Final report · Dec 3, 1986 · N3898U · Destroyed > The helicopter was being used in an emerg med svc/med-evac (EMS) opn. At 0230, the plt obtained a partial wx briefing. He was advised of flt prctns for IFR wx thru-out the area with low ceilings, fog, precip & mtns obscd. The flt departed nashville at 0245 &… - [NTSB ATL87MA028](https://openairdocs.org/ntsb/ATL87MA028.md): Bell 206B · Cincinnati, OH · Accident · 2 fatal · Major investigation · Final report · Nov 25, 1986 · N59610 · Destroyed > The owner/operator (oper) of a flying service provided acft for broadcasting stations in the area. A radio station had contracted with the oper to provide a helicopter (helo, N59610) & a plt to take a news rprtr on a local traffic watch. The oper rprtd that… - [NTSB DCA87MA010](https://openairdocs.org/ntsb/DCA87MA010.md): Piper PA-23-150 · Tampa, FL · Accident · 1 fatal · Class 1 · Major · Final report · Nov 6, 1986 · N2185P · 2 aircraft · Destroyed > At aprx 0612 EST, an eastern airline capt (owner of Piper PA-23, N2185P) departed a rwy near his home in VFR conds to commute to work at Tampa, FL. Shortly after takeoff, he contacted a fss & updated the wx info he had obtained on the previous evening. At… - [NTSB DEN86MA129](https://openairdocs.org/ntsb/DEN86MA129.md): Gulfstream 690D · Price, UT · Accident · 6 fatal · Major investigation · Final report · May 7, 1986 · N200PR · Destroyed > At 1042 MDT, the flt rprtd mod turbc at FL 240, but elected to remain at that alt. At 1055, they were clrd to dscnd at plt's descretion to maint 12,000'. Aprx 8 min later, shortly after bgng a dscnt, the flt was instructed to chg freq; BUT21 secs later, they… - [NTSB FTW86MA074](https://openairdocs.org/ntsb/FTW86MA074.md): Cessna 310Q · Houston, TX · Accident · Serious injuries · Major investigation · Final report · May 2, 1986 · N69668 · Destroyed > Drg ngt visual apch, plt enctrd dtrtg wx, got vectors for ILS rwy 8 apch, was clrd for apch at 0511 CDT. On final apch, he noted his #1 & #2 ils's giving erratic LOC & g/s info (but functioning) & that his LOC course deviation info didn't agree with adf, but… - [NTSB DCA86AA021](https://openairdocs.org/ntsb/DCA86AA021.md): Embraer EMB-110P1 · Alpena, MI · Accident · 3 fatal · Final report · Mar 14, 1986 · N1356P · Destroyed > Drg arrival at 2125 EST, simmons airline flt 1746 was adzd by wurtsmith afb apch ctl that the 2052 EST wx at phelps collins arpt was: sky partially obscd, ceiling 100' overcast, vis 1/2 mi with lgt drizzle & fog, & to expect an ILS apch. However, at 2119, a… - [NTSB ANC86MA027](https://openairdocs.org/ntsb/ANC86MA027.md): Cessna 207 · Nome, AK · Accident · 3 fatal · Major investigation · Final report · Feb 11, 1986 · N9468M · Destroyed > The acft departed during a break in the wx after having waited for a special VFR departure. His departure radio call was the last communication from the flt. The wx remained marginal with icing in the clouds and freezing drizzle. The acft was on a flt to… - [NTSB CHI86MA071](https://openairdocs.org/ntsb/CHI86MA071.md): Bell 206B · Ellendale, MN · Accident · 3 fatal · Major investigation · Final report · Jan 21, 1986 · N1498W · Destroyed > The purpose of the flt was to take a news crew to a location to cover a story. The news crew had attempted to hire another helicopter, but that operator refused due to forcast low visibility. This plt, however, agreed to fly. Altho he was certified for… - [NTSB DEN86MA061](https://openairdocs.org/ntsb/DEN86MA061.md): Cessna 425 · Granby, CO · Accident · 5 fatal · Major investigation · Final report · Jan 11, 1986 · N425SC · Destroyed > Drg arrival, the plt advised ARTCC that the destination arpt appeared to be covered with fog. She then canceled her IFR flt plan. According to ground witnesses, the acft made several passes over the arpt. Witnesses also rprtd that the horizontal visibility… - [NTSB CHI86MA052](https://openairdocs.org/ntsb/CHI86MA052.md): Cessna 177B · Brooklyn, MI · Accident · 6 fatal · Major investigation · Final report · Dec 22, 1985 · N34046 · Destroyed > The pilot took off with five passengers approximately 170 pounds over maximum allowable gross weight into known moderate icing conditions. His aircraft was not equipped to fly in these conditions. Radio and radar contact were lost at approximately 3500 feet… - [NTSB FTW86MA010](https://openairdocs.org/ntsb/FTW86MA010.md): Beech V35 · Bridger, MT · Accident · 4 fatal · Major investigation · Final report · Oct 3, 1985 · N8475H · Destroyed > Drg a preflt wx briefing, the plt was advised that VFR flt was not recommended due to forecast frontal activity moving southbound along his route. Severe turbulence & icing had been reported just to the north of his course. He filed a VFR flt plan & took off… - [NTSB DCA85AA031](https://openairdocs.org/ntsb/DCA85AA031.md): Lockheed L-1011-385-1 · Dallas/Ft Worth, TX · Accident · 135 fatal · Final report · Aug 2, 1985 · N726DA · Destroyed > The Safety Board's full report on this investigation is provided as Aviation Accident Report number AAR-86/05. To obtain a copy of this report, or to view the executive summary online, please see the Web site at http://www.ntsb.gov/publictn/publictn.htm Psbl… - [NTSB FTW85MA297](https://openairdocs.org/ntsb/FTW85MA297.md): Beech H35 · El Reno, OK · Accident · 3 fatal · Major investigation · Final report · Jul 25, 1985 · N356B · Destroyed > The acft took off at 1054 CDT in VMC with no flt plan. At that time, there was a rprtd ceiling of 1800 ft. at 1112 CDT, the plt rprtd he was at 10,000 ft, 'just reaching the tops.' At 1137 CDT, he stated 'we're about 60 west of oke city, westbound to sayre… - [NTSB LAX85MA012](https://openairdocs.org/ntsb/LAX85MA012.md): Bell 206B · Riverside, CA · Accident · 3 fatal · Major investigation · Final report · Oct 10, 1984 · N3U · Destroyed > The acft departed fullerton, CA (elev 96') at O958 PDT on a flt to big bear, CA (elev 6750'). There was no record of the plt obtaining a wx briefing. At aprx 1015, a witness heard the helicopter circling above the bottom of 'an early morning fog hanging over… - [NTSB DEN84MA266](https://openairdocs.org/ntsb/DEN84MA266.md): Aero Commander 690 · Little America, WY · Accident · 4 fatal · Major investigation · Final report · Aug 25, 1984 · N9150N · Destroyed > About 10 min after takeoff at 1005 MDT, the plt was cleared to climb to FL 190. This was atc's last communication with the acft. At 1030:39, the controller attempted to contact the plt to advise that he had lost radar contact & to recycle the transponder &… - [NTSB DEN84MA247](https://openairdocs.org/ntsb/DEN84MA247.md): Cessna 421C · Fort Lupton, CO · Accident · 3 fatal · Major investigation · Final report · Aug 1, 1984 · N6231G · Destroyed > During a preflt wx briefing, the plt was advised of thunderstorms & intense rain showers on the route of flt. However, he filed an IFR flt plan & took off. During flt, the ATC controller advised the plt of a level 6 cell ahead & noted that he had no report on… - [NTSB DCA84AA025](https://openairdocs.org/ntsb/DCA84AA025.md): Boeing 727-222 · Denver, CO · Accident · No injuries · Final report · May 31, 1984 · N7640U · Substantial damage > Before takeoff, the crew of N7647U (ua flt 663) noted cumulus clouds & virga in the area. At 1327, a Dehavilland dash 7 crew rprtd a 25 kt loss of airspeed, but svrl other acft then took off without rprtg a problem. Due to radio conjestion,the captain did not… - [NTSB ATL84MA052](https://openairdocs.org/ntsb/ATL84MA052.md): Beech 58TC · Knoxville, TN · Accident · 4 fatal · Major investigation · Final report · Nov 27, 1983 · N2131L · Destroyed > During arrival, the plt checked in with Knoxville apch control & stated that he was proceeding to the downtown arpt for landing. At that time, the wx at mcghee-tyson arpt (aprx 10 mi ssw) was clear with 7 mi visibility. About 10 min later, the plt reported… - [NTSB DCA84AA008](https://openairdocs.org/ntsb/DCA84AA008.md): Lockheed L-1011 · Charleston, SC · Accident · Serious injuries · Final report · Nov 25, 1983 · CFTNJ · Minor damage > During flt at FL350, the fltcrew noted some thunderstorms in the vicinity of their route of flt & advised the ATC controller that they might have to detour. After turning & climbing to FL370, they noted 'moderate chop to light turbulence' & saw a flash of… - [NTSB DCA83AA034](https://openairdocs.org/ntsb/DCA83AA034.md): Piper PA-31-350 · Peach Springs, AZ · Accident · 10 fatal · Final report · Aug 17, 1983 · N88LV · Destroyed > The acft departed las vegas, NV as the 2nd of 5 acft on a scheduled grand canyon sight-seeing flt. The 1st portion of the flt was over the las vegas strip area & lake mead & was uneventful. However, wx conditions precluded the plt from continuing over the… Next page: https://openairdocs.org/ntsb.md?major=1&occurrence=240&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.board_report_url IS NOT NULL OR c."investigationClass" = 'Class 1' OR c."caseType" = 'Major - Launch') AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?major=1&occurrence=240 --- 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.