# NTSB investigations: Unknown or undetermined

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 33 of 35 · 1,713 cases

## Cases, newest first

- [NTSB CEN11FA285](https://openairdocs.org/ntsb/CEN11FA285.md): Hawker-Beechcraft E-55 · De Queen, AR · Accident · 1 fatal · Field investigation · Final report · Apr 15, 2011 · N3959W · Substantial damage
  > The pilot’s loss of control during takeoff for undetermined reasons.
- [NTSB ERA11WA245](https://openairdocs.org/ntsb/ERA11WA245.md): Bell 206B · Santo Andre City, Brazil · Accident · 2 fatal · Foreign investigation · Apr 8, 2011 · PT-YMJ · Destroyed
  > On April 8, 2011, at 2030 coordinated universal time (1730 local time), a Bell 206B, Brazilian registration PT-YMJ, was destroyed when it impacted terrain at the 5,000-foot level of the Serra do Mar mountain range in Santo André, São Paulo, Brazil. The pilot…
- [NTSB ERA11WA251](https://openairdocs.org/ntsb/ERA11WA251.md): Eurocopter AS-355-F2 · Alto Alegre, Brazil · Accident · 3 fatal · Foreign investigation · Apr 6, 2011 · PT-HNA · Destroyed
  > On April 6, 2011, about 2225 coordinated universal time, a Eurocopter AS-355-F2, Brazilian registration PT-HNA, was destroyed when it impacted terrain near Alto Alegre, Brazil. The pilot and one passenger incurred minor injuries, and three passengers were…
- [NTSB WPR11WA176](https://openairdocs.org/ntsb/WPR11WA176.md): Piper PA-32R · Moree, Australia · Accident · 4 fatal · Foreign investigation · Mar 30, 2011 · VH-LKI · Substantial damage
  > The accident is under the jurisdiction of and is being investigated by the Australian Transport Safety Bureau.
- [NTSB ERA11FA214](https://openairdocs.org/ntsb/ERA11FA214.md): Aerostar S A YAK-52 · Palm Coast, FL · Accident · 1 fatal · Field investigation · Final report · Mar 26, 2011 · N808TD · Substantial damage
  > The pilot’s failure to recover from the nose-low descent during an aerobatic maneuver.
- [NTSB CEN11FA244](https://openairdocs.org/ntsb/CEN11FA244.md): Cessna 182M · Hot Springs, AR · Accident · 2 fatal · Field investigation · Final report · Mar 24, 2011 · N70922 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR11FA173](https://openairdocs.org/ntsb/WPR11FA173.md): Cessna P210 · Daggett, CA · Accident · 3 fatal · Field investigation · Final report · Mar 20, 2011 · N50MC · Substantial damage
  > The pilot's decision to conduct the flight into a region of reported moderate to severe turbulence and icing conditions, followed by a loss of airplane control and an aerodynamic spin from which the pilot did not recover.
- [NTSB ERA11WA189](https://openairdocs.org/ntsb/ERA11WA189.md): Cessna 182 · Calamar, Colombia · Accident · 1 fatal · Foreign investigation · Mar 14, 2011 · HK1084 · Substantial damage
  > On March 14, 2011, about 0815 universal coordinated time, a Cessna, 182N, Colombian registration, HK1084, operated by Transportes Aereos del Ariari, crashed while returning to Aerodromo Jorge E. Gonzalez- San Jose Guaviare (SKSJ), Calamar, Colombia, shortly…
- [NTSB DCA11WA024](https://openairdocs.org/ntsb/DCA11WA024.md): Raytheon Hawker · Sulaimanyia, Iraq · Accident · 7 fatal · Foreign investigation · Feb 4, 2011 · OD-SKY · Destroyed
  > On February 4, 2011 about 1449 UTC, OD-SKY, a Hawker Beechcraft HS-850XP, registered to Club Aviation S.A.L and operated by Sky Lounge services S.A.L., crashed during the initial takeoff climb at Suliamaniyah International Airport, Iraq. The 3 crew members…
- [NTSB ERA11WA143](https://openairdocs.org/ntsb/ERA11WA143.md): Beech 58 · Patrimonio Regina City, Brazil · Accident · 3 fatal · Foreign investigation · Jan 28, 2011 · PT-BOR · Substantial damage
  > On January 28, 2011, at 2047 coordinated universal time (1847 local time), a Beech 58, Brazilian registration PT-BOR, was substantially damaged when it impacted terrain near Patrimônio Regina City, Paraná, Brazil. The two pilots and the passenger were fatally…
- [NTSB CEN11WA151](https://openairdocs.org/ntsb/CEN11WA151.md): Cirrus Design SR20 · Santiago Atitlán, Guatemala · Accident · 1 fatal · Foreign investigation · Jan 10, 2011 · N431SR · Destroyed
- [NTSB DCA11WA069](https://openairdocs.org/ntsb/DCA11WA069.md): Boeing 727 · Urmia, Iran · Accident · No injuries · Foreign investigation · Jan 9, 2011 · EP-IRP · Destroyed
  > On January 9, 2011, an Iran Air Boeing B727-200, registration EP-IRP, crashed during missed approach to Orumiyeh Airport (OITR), Urmia, Iran. Of the 105 passengers and crew onboard, 78 were fataly injured and 27 received serious injuries. The airplane was…
- [NTSB CEN11FA133](https://openairdocs.org/ntsb/CEN11FA133.md): Piper PA-46-310P · Milaca, MN · Accident · 2 fatal · Field investigation · Final report · Dec 30, 2010 · N9103N · Substantial damage
  > The pilot did not recover from an unusual attitude while operating in instrument meteorological conditions following a disconnect of the autopilot system for undetermined reasons. Contributing to the accident were the pilot’s lack of recent flight experience…
- [NTSB CEN11FA130](https://openairdocs.org/ntsb/CEN11FA130.md): Cessna 210B · Loveland, CO · Accident · 1 fatal · Field investigation · Final report · Dec 27, 2010 · N200EP · Substantial damage
  > The pilot's intentional flight into terrain.
- [NTSB ERA11FA094](https://openairdocs.org/ntsb/ERA11FA094.md): Piper PA-28-151 · Spencer, MA · Accident · 1 fatal · Field investigation · Final report · Dec 22, 2010 · N30ZZ · Substantial damage
  > The in-flight collision with a tree while returning to land for undetermined reasons.
- [NTSB ERA11WA090](https://openairdocs.org/ntsb/ERA11WA090.md): Hawker Beechcraft TC-45J · Nassau, Bahamas · Accident · 2 fatal · Foreign investigation · Dec 14, 2010 · N38L · Destroyed
  > On December 14, 2010, about 1442 eastern standard time, a Hawker Beechcraft TC-45J, N38L, registered to and operated by Monarch Air Group, impacted ocean waters about 7 miles southwest of Lynden Pindling International Airport (MYNN), Nassau, Bahamas. The…
- [NTSB CEN11WA094](https://openairdocs.org/ntsb/CEN11WA094.md): Cessna F150 · Linköping, Sweden · Accident · 1 fatal · Foreign investigation · Dec 1, 2010 · SE-IGU · Substantial damage
  > On December 1, 2010, at 1711 coordinate universal time, a Cessna F150H, SE-IGU, was substantially damaged upon impact with terrain after initial takeoff from the Linköping Airport (ESSL), Linköping, Sweden. The pilot was fatally injured. The airplane was…
- [NTSB ERA11LA071](https://openairdocs.org/ntsb/ERA11LA071.md): Cessna 172N · Bluffton, SC · Accident · Minor injuries · Limited investigation · Final report · Nov 21, 2010 · N882AV · Substantial damage
  > An in-flight upset of undetermined origin resulting in a forced landing.
- [NTSB CEN11LA078](https://openairdocs.org/ntsb/CEN11LA078.md): Swiezy Glasair SHA · North Little Rock, AR · Accident · No injuries · Limited investigation · Final report · Nov 19, 2010 · N729RS · Substantial damage
  > The pilot's failure to maintain adequate airspeed, resulting in an aerodynamic stall and hard landing.
- [NTSB DCA11WA114](https://openairdocs.org/ntsb/DCA11WA114.md): Piper PA32 - 301 · Vipingo Ridge, Kenya · Accident · 1 fatal · Foreign investigation · Oct 23, 2010 · 5Y-NAM · Substantial damage
  > On October 23, 2010, about 0653 UTC, 5Y-NAM, a Piper PA-32R-301, a personal flight, had an inflight breakup during cruise flight and crashed in an open field at Vipingo Ridge, Kenya. The pilot, the sole occupant, was fatally injured. The aircraft was…
- [NTSB ERA11WA031](https://openairdocs.org/ntsb/ERA11WA031.md): Cessna TU206G · Medellin, Colombia · Accident · 5 fatal · Foreign investigation · Oct 20, 2010 · HK2933 · Destroyed
  > On October 20, 2010, about 1300 Universal Coordinated Time (UTC), a Cessna TU206G, Columbian registration HK2933, was destroyed by fire after crashing in Path Shipyards, Medellin, Columbia. The flight was en route from Medellin, (SKMD), to Fort Vigia,…
- [NTSB ERA11LA023](https://openairdocs.org/ntsb/ERA11LA023.md): Bobo Christopher J Loehle 5151 · Southern Pines, NC · Accident · Serious injuries · Limited investigation · Final report · Oct 17, 2010 · N838B · Substantial damage
  > The reported fluttering of the wings in flight and the pilot's subsequent in-flight loss of control for undetermined reasons.
- [NTSB DCA11WA003](https://openairdocs.org/ntsb/DCA11WA003.md): Lockheed L-100 · Kabul, Afghanistan · Accident · 8 fatal · Foreign investigation · Oct 12, 2010 · 5X-TUC · Destroyed
  > On October 12, 2010, about 1505 UTC, a Trans Afrique Airlines (under contract to National Air Cargo) Lockheed L-100, registration 5X-TUC, impacted terrain while maneuvering to land at Kabul International Airport (OAKB), Kabul Afghanistan. The two flight crew…
- [NTSB CEN11LA012](https://openairdocs.org/ntsb/CEN11LA012.md): Newmann Edward W Challenger II · Easton, KS · Accident · 1 fatal · Limited investigation · Final report · Oct 8, 2010 · N61328 · Substantial damage
  > The pilot’s failure to maintain control of the airplane for undetermined reasons.
- [NTSB ERA11WA041](https://openairdocs.org/ntsb/ERA11WA041.md): Piper PA38 · Buenos Aires, Argentina · Accident · 2 fatal · Foreign investigation · Oct 3, 2010 · LV-MNO · Substantial damage
  > On October 3, 2010, about 1920 Universal Coordinated Time (UTC), a Piper PA-A-38-112, Argentinean registration LV-MNO, crashed into terrain during an instructional flight near Marcos Paz, Argentina. The local training flight originated from San Fernando…
- [NTSB CEN10LA586](https://openairdocs.org/ntsb/CEN10LA586.md): Cessna 175 · Deming, NM · Accident · Serious injuries · Limited investigation · Final report · Sep 29, 2010 · N9431B · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN12WA547](https://openairdocs.org/ntsb/CEN12WA547.md): Beech D55 · Cabo San Lucas, Mexico · Accident · 2 fatal · Foreign investigation · Sep 25, 2010 · N91HV · Substantial damage
- [NTSB CEN10CA550](https://openairdocs.org/ntsb/CEN10CA550.md): Piper PA-28-140 · Carthage, TX · Accident · Minor injuries · Data collection · Final report · Sep 20, 2010 · N333NA · Substantial damage
  > A total loss of engine power during cruise flight due to fuel exhaustion as a result of the pilot’s improper fuel planning.
- [NTSB ERA10WA507](https://openairdocs.org/ntsb/ERA10WA507.md): Robinson R44 · Itanhaem, Brazil · Accident · 2 fatal · Foreign investigation · Sep 10, 2010 · PT-YON · Substantial damage
  > On September 10, 2010, about 1445 Universal Coordinated Time (UTC), a Robinson Helicopters R44, Brazilian registration PT-YON, operated by AM Transportes Ltda ME, crashed into mountainous terrain near Itanhaem, State of Sao Paulo, Brazil. The flight was en…
- [NTSB ERA10FA464](https://openairdocs.org/ntsb/ERA10FA464.md): Cessna 150H · DeLand, FL · Accident · 2 fatal · Field investigation · Final report · Sep 4, 2010 · N23471 · Substantial damage
  > The pilot's failure to maintain adequate airspeed and airplane control during the initial climb, which resulted in an aerodynamic stall, wire strike, and subsequent impact with the ground.
- [NTSB CEN10CA517](https://openairdocs.org/ntsb/CEN10CA517.md): Beech D35 · Guymon, OK · Accident · Minor injuries · Data collection · Final report · Sep 1, 2010 · N3446B · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN10LA512](https://openairdocs.org/ntsb/CEN10LA512.md): Cessna 210 · Houma, LA · Accident · Minor injuries · Limited investigation · Final report · Aug 31, 2010 · N210PR · Substantial damage
  > The pilot’s improper fuel management, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB CEN10FA509](https://openairdocs.org/ntsb/CEN10FA509.md): Bell Helicopter Textron 206L-1 · Walnut Grove, AR · Accident · 3 fatal · Field investigation · Final report · Aug 31, 2010 · N62AE · Substantial damage
  > The pilot’s loss of aircraft control, due to spatial disorientation, resulting in the in-flight separation of the main rotor and tail boom.
- [NTSB CEN10CA510](https://openairdocs.org/ntsb/CEN10CA510.md): Grumman Acft ENG Cor-Schweizer G-164B · Basile, LA · Accident · No injuries · Data collection · Final report · Aug 27, 2010 · N63E · Substantial damage
  > The loss of directional control during landing due to failure of the right brake for undetermined reasons.
- [NTSB CEN10RA579](https://openairdocs.org/ntsb/CEN10RA579.md): Zivko Aeronautics Edge 540 · Toledo, Spain · Accident · 1 fatal · Foreign investigation · Aug 17, 2010 · N540WC · Destroyed
  > import
- [NTSB WPR10FA388](https://openairdocs.org/ntsb/WPR10FA388.md): Diamond HK36 · Bend, OR · Accident · 1 fatal · Field investigation · Final report · Aug 8, 2010 · N40440 · Substantial damage
  > An condition, which could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation, that prompted the pilot to discontinue the flight. Contributing to the accident…
- [NTSB ERA10LA408](https://openairdocs.org/ntsb/ERA10LA408.md): Quest Kodiak 100 · Naples, ME · Accident · No injuries · Limited investigation · Final report · Aug 8, 2010 · N917CM · Substantial damage
  > A loss of control during landing for undetermined reasons.
- [NTSB CEN10WA585](https://openairdocs.org/ntsb/CEN10WA585.md): Schweizer 269C · Saint Gondon, France · Accident · 2 fatal · Foreign investigation · Jul 25, 2010 · F-GJGQ · Destroyed
  > On July 25, 2010, at 0800 coordinated universal time, a Schweizer 269C, French registered F-GJGQ, was destroyed when it impacted trees in a wooded area under unknown circumstances near Saint-Gondon, France. Visual meteorological conditions prevailed at the…
- [NTSB ANC10WA073](https://openairdocs.org/ntsb/ANC10WA073.md): Beech B36TC · Peace River, Canada · Accident · 1 fatal · Foreign investigation · Jul 24, 2010 · N64631 · Substantial damage
- [NTSB CEN10LA409](https://openairdocs.org/ntsb/CEN10LA409.md): Davis John TR-4 · Denton, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 19, 2010 · N767GW · Substantial damage
  > A loss of engine power and the pilot’s subsequent loss of control for undetermined reasons.
- [NTSB CEN10LA408](https://openairdocs.org/ntsb/CEN10LA408.md): Schweizer 269C · Minden, NE · Accident · No injuries · Limited investigation · Final report · Jul 19, 2010 · N410JM · Substantial damage
  > The pilot's inadequate flare during an autorotation, which resulted in a hard landing and subsequent rollover.
- [NTSB ERA10FA346](https://openairdocs.org/ntsb/ERA10FA346.md): Cessna 172P · Chesapeake, VA · Accident · 1 fatal · Field investigation · Final report · Jul 5, 2010 · N52614 · Substantial damage
  > The airplane's impact with terrain for undetermined reasons following the pilot's report of a flight control malfunction.
- [NTSB WPR10WA321](https://openairdocs.org/ntsb/WPR10WA321.md): Erickson S64E · Borneo Island, Indonesia · Accident · 1 fatal · Foreign investigation · Jun 25, 2010 · N229AC · Substantial damage
- [NTSB CEN10CA362](https://openairdocs.org/ntsb/CEN10CA362.md): Hiller UH-12E · Grand Junction, CO · Accident · Minor injuries · Data collection · Final report · Jun 25, 2010 · N9754C · Substantial damage
  > The total loss of engine power for undetermined reasons.
- [NTSB ERA10WA327](https://openairdocs.org/ntsb/ERA10WA327.md): Cessna · Pavacachi, Ecuador · Accident · Serious injuries · Foreign investigation · Jun 22, 2010 · HC-BYA · Substantial damage
  > On June 22, 2010, about 1345 universal time, a Cessna TU-206F, HC-BYA, registered to and operated by Servicio Aero Quichua De Pasta, as a cargo flight, initiated a descent in the vicinity of Pavacachi, Ecuador. Visual meteorological conditions prevailed and a…
- [NTSB WPR10FA295](https://openairdocs.org/ntsb/WPR10FA295.md): Kaman Aerospace K-1200 · Donnelly, ID · Accident · 1 fatal · Field investigation · Final report · Jun 16, 2010 · N134WC · Substantial damage
  > The collision of two counter-rotating main rotor blades for undetermined reasons, which resulted in a loss of control.
- [NTSB CEN10CA325](https://openairdocs.org/ntsb/CEN10CA325.md): Cessna 172 · Traverse City, MI · Accident · No injuries · Data collection · Final report · Jun 15, 2010 · N52519 · Substantial damage
  > Damage to the firewall for undetermined reasons.
- [NTSB CEN10FA277](https://openairdocs.org/ntsb/CEN10FA277.md): Aveko Sro VL-3 LSA · Boyd, TX · Accident · Serious injuries · Field investigation · Final report · May 30, 2010 · N801GB · Substantial damage
  > ***This report was modified on November 15, 2012. Please see the docket for this accident to view the original report with revisions shown.*** The pilots’ failure to avoid and recover from the prohibited maneuver of aerodynamic spin during a training flight,…
- [NTSB CEN10LA274](https://openairdocs.org/ntsb/CEN10LA274.md): Henney Michael A Vans RV-6A · Granbury, TX · Accident · 1 fatal · Limited investigation · Final report · May 28, 2010 · N226MH · Substantial damage
  > The loss of control for undetermined reasons.
- [NTSB CEN10LA236](https://openairdocs.org/ntsb/CEN10LA236.md): Aero Commander S2R · DeWitt, AR · Accident · 1 fatal · Limited investigation · Final report · May 3, 2010 · N5531X · Substantial damage
  > The pilot did not maintain clearance from terrain for undetermined reasons.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?page=34

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '000' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/000/sequence?page=33

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