# NTSB investigations: Not determined, general

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 9 of 45 · 2,248 cases

## Cases, newest first

- [NTSB ERA20FA074](https://openairdocs.org/ntsb/ERA20FA074.md): Robinson R66 · Mechanicsburg, PA · Accident · 2 fatal · Class 3 · Field · Final report · Jan 10, 2020 · N450MC · Destroyed
  > A severe left roll excursion after the onset of pitch and roll oscillations, which were not arrested by the pilot for undetermined reasons. This resulted in main rotor blade contact with the airframe and a subsequent inflight breakup of the helicopter.
- [NTSB ERA20LA071](https://openairdocs.org/ntsb/ERA20LA071.md): Hughes OH 6A · Preston, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 8, 2020 · N6186U · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN20LA055](https://openairdocs.org/ntsb/CEN20LA055.md): Aero Commander 100 · Mullin, TX · Accident · No injuries · Class 3 · Limited · Final report · Jan 4, 2020 · N5573M · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR20LA054](https://openairdocs.org/ntsb/WPR20LA054.md): Mitsubishi MU2B · Big Piney, WY · Accident · No injuries · Class 3 · Limited · Final report · Dec 30, 2019 · N43866 · Substantial damage
  > The failure of the right propeller position to correspond to the throttle change when moved to the beta position for reasons that could not be determined based on available evidence.
- [NTSB CEN20CA047](https://openairdocs.org/ntsb/CEN20CA047.md): Cessna 182 · Robstown, TX · Accident · No injuries · Data collection · Final report · Dec 30, 2019 · N3473U · Substantial damage
  > The pilot's failure to set the friction lock on the throttle before hand propping the engine, which allowed the airplane to move forward and impact a credit card machine. Contributing to the accident was the malfunction of the parking brake for reasons that…
- [NTSB WPR20LA040](https://openairdocs.org/ntsb/WPR20LA040.md): Vans RV 6 · Pima, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 5, 2019 · N616RV · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB DCA20IA034](https://openairdocs.org/ntsb/DCA20IA034.md): Airbus AS 350 B2 · Los Angeles, CA · Incident · No injuries · Incident investigation · Final report · Dec 5, 2019 · N71HD · 2 aircraft · Minor damage
  > an inflight collision with a hard object of polycarbonate construction, with size and features consistent with that of a small UAS (drone).
- [NTSB CEN20LA046](https://openairdocs.org/ntsb/CEN20LA046.md): Cessna 150 · Shreveport, LA · Accident · No injuries · Class 3 · Limited · Final report · Nov 24, 2019 · N22931 · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN20FA019](https://openairdocs.org/ntsb/CEN20FA019.md): Raytheon A36 · San Marcos, TX · Accident · 1 fatal · Class 3 · Field · Final report · Nov 20, 2019 · N88855 · Destroyed
  > The pilot’s loss of control shortly after takeoff in instrument meteorological conditions for reasons that could not be determined based on the available information.
- [NTSB WPR20LA028](https://openairdocs.org/ntsb/WPR20LA028.md): Cessna 182 · Metaline, WA · Accident · 1 fatal · Class 3 · Limited · Final report · Nov 11, 2019 · N8749T · Destroyed
  > Impact with a lake for reasons that could not be determined.
- [NTSB ERA20LA033](https://openairdocs.org/ntsb/ERA20LA033.md): Mooney M20J · St. Augustine, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 10, 2019 · N5765H · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB GAA20CA062](https://openairdocs.org/ntsb/GAA20CA062.md): Bell 47G · Groveland, FL · Accident · No injuries · Data collection · Final report · Nov 7, 2019 · N6746D · Substantial damage
  > The student pilot's improper cyclic input after a reported hydraulic failure, the reason for which could not be determined, and his failure to follow the emergency procedures, which resulted in a hard landing.
- [NTSB WPR20LA032](https://openairdocs.org/ntsb/WPR20LA032.md): Beech 36 · Hurricane, UT · Accident · No injuries · Class 3 · Limited · Final report · Nov 4, 2019 · N936TC · Substantial damage
  > The pilot’s failure to ensure that the landing gear was in the fully extended and locked position before landing. Contributing to the accident was the overload of the landing gear circuit for reasons that could not be determined.
- [NTSB ERA20FA029](https://openairdocs.org/ntsb/ERA20FA029.md): Pavel Tango2 · Cedartown, GA · Accident · 1 fatal · Class 3 · Field · Final report · Nov 4, 2019 · N875FV · Substantial damage
  > The pilot's loss of control of the gyroplane for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA017](https://openairdocs.org/ntsb/CEN20LA017.md): Socata TB 30 Epsilon · Kalamazoo, MI · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 1, 2019 · N50TB · Substantial damage
  > A total loss of engine power for undetermined reasons, which resulted in an aerodynamic stall during the pilot’s attempted forced landing at low altitude and impact with terrain.
- [NTSB ERA20FA025](https://openairdocs.org/ntsb/ERA20FA025.md): Vans RV 4 · Middleburg, FL · Accident · 1 fatal · Class 3 · Field · Final report · Oct 31, 2019 · N425JW · Destroyed
  > Impact with power lines for reasons that could not be determined based on available evidence.
- [NTSB WPR20FAMS1](https://openairdocs.org/ntsb/WPR20FAMS1.md): Piper PA28R · Shelter Cove, CA · Accident · 2 fatal · Class 3 · Missing aircraft · Final report · Oct 25, 2019 · N4958J · Destroyed
  > Undetermined due to lack of available evidence.
- [NTSB WPR20LA014](https://openairdocs.org/ntsb/WPR20LA014.md): Vans RV 6 · Spanaway, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 23, 2019 · N615RJ · Substantial damage
  > A total loss of engine power during the initial climb for reasons that could not be determined.
- [NTSB WPR20FA013](https://openairdocs.org/ntsb/WPR20FA013.md): Robinson R44 · Las Vegas, NV · Accident · 2 fatal · Class 3 · Field · Final report · Oct 23, 2019 · N225JM · Substantial damage
  > An undetermined inflight event that resulted in the pilot performing an autorotation to uneven terrain for reasons that could not be determined due to the extent of impact damage.
- [NTSB GAA20CA039](https://openairdocs.org/ntsb/GAA20CA039.md): Zenair CH 701 · Safford, AZ · Accident · No injuries · Data collection · Final report · Oct 20, 2019 · N3784A · Substantial damage
  > The in-flight separation of a propeller blade for reasons that could not be determined based on the available evidence, which resulted in an off-airport landing on soft sand and the separation of main landing gear. Contributing to the accident was the pilot’s…
- [NTSB CEN20FA009](https://openairdocs.org/ntsb/CEN20FA009.md): Vans RV-8 · White Plains, AL · Accident · 1 fatal · Class 3 · Field · Final report · Oct 20, 2019 · N249BW · Destroyed
  > Impact with terrain for reasons that could not be determined based on the available information.
- [NTSB WPR20LA009](https://openairdocs.org/ntsb/WPR20LA009.md): Cessna 206 · Stockton, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 18, 2019 · N11379 · Substantial damage
  > A total loss of engine power after takeoff for reasons that could not be determined based on the available information.
- [NTSB CEN20LA021](https://openairdocs.org/ntsb/CEN20LA021.md): Piper PA23 · (Gulf of Mexico) · Accident · 1 fatal · Class 3 · Limited · Final report · Oct 17, 2019 · N778PA · Destroyed
  > The airplane’s descent into the ocean for reasons that could not be determined.
- [NTSB CEN20LA016](https://openairdocs.org/ntsb/CEN20LA016.md): Piper PA-28R-200 · Springtown, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 13, 2019 · N75139 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN20LA005](https://openairdocs.org/ntsb/CEN20LA005.md): Zenair Zenith CH 701 · Garden Ridge, TX · Accident · No injuries · Limited investigation · Final report · Oct 5, 2019 · N701BJ · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB ERA20LA011](https://openairdocs.org/ntsb/ERA20LA011.md): Piper PA46 · Harrisburg, PA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 4, 2019 · N4385K · Substantial damage
  > A total loss of engine power for reasons that could not be determined following a successful engine run.
- [NTSB WPR19LA267](https://openairdocs.org/ntsb/WPR19LA267.md): Piper PA28 · Modesto, CA · Accident · No injuries · Class 3 · Limited · Final report · Sep 28, 2019 · N8353T · Destroyed
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN19LA334](https://openairdocs.org/ntsb/CEN19LA334.md): Air Tractor AT802 · Columbus, MS · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 27, 2019 · N801BF · Substantial damage
  > A total loss of engine power control for undetermined reasons.
- [NTSB CEN19LA324](https://openairdocs.org/ntsb/CEN19LA324.md): Best Off Skyranger · Duncan, OK · Accident · No injuries · Class 3 · Limited · Final report · Sep 19, 2019 · N1671L · Destroyed
  > A fire during the engine run-up for undetermined reasons.
- [NTSB ERA19FA275](https://openairdocs.org/ntsb/ERA19FA275.md): Vans RV 8 · Stroudsburg, PA · Accident · 2 fatal · Class 3 · Field · Final report · Sep 17, 2019 · N7TL · Destroyed
  > The pilot's failure to maintain control of the airplane for undetermined reasons.
- [NTSB CEN19TA321](https://openairdocs.org/ntsb/CEN19TA321.md): Piper PA46 · Gulf of Mexico · Accident · No injuries · Class 3 · Final report · Sep 15, 2019 · N218MW · Destroyed
  > A loss of engine power for undetermined reasons.
- [NTSB ERA19LA279](https://openairdocs.org/ntsb/ERA19LA279.md): Piper PA23 · Charlotte Amalie · Accident · No injuries · Class 3 · Limited · Final report · Sep 12, 2019 · N269KW · Substantial damage
  > The collapse of the left main landing gear for undetermined reasons.
- [NTSB CEN19LA315](https://openairdocs.org/ntsb/CEN19LA315.md): Piper PA34 · Kingman, KS · Accident · No injuries · Class 3 · Limited · Final report · Sep 11, 2019 · N328RG · Substantial damage
  > The malfunction of the landing gear extension system for reasons that could not be determined with the available evidence.
- [NTSB WPR19LA261](https://openairdocs.org/ntsb/WPR19LA261.md): Havoc Air Racing Super GT 111 · Reno, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 9, 2019 · N400MC · Substantial damage
  > The failure of the landing gear to extend for reasons that could not be determined.
- [NTSB CEN19FA307](https://openairdocs.org/ntsb/CEN19FA307.md): Cessna 140 · Lakeview, SD · Accident · 2 fatal · Class 3 · Field · Final report · Sep 8, 2019 · N73000 · Substantial damage
  > The student pilot’s failure to maintain control of the airplane, which resulted in the exceedance of the airplane’s critical angle-of-attack, an aerodynamic stall, and subsequent impact with terrain, and the student pilot’s non-compliance and lack of…
- [NTSB CEN19LA306](https://openairdocs.org/ntsb/CEN19LA306.md): Pietenpol Sky Scout · Kingsbury, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 7, 2019 · N1932G · Substantial damage
  > The total loss of engine power for reasons that could not be determined with the available evidence and the pilot’s exceedance of the airplane’s critical angle of attack, which led to an aerodynamic stall and spin at a low altitude.
- [NTSB ERA19FA265](https://openairdocs.org/ntsb/ERA19FA265.md): Vans RV-12 · Lady Lake, FL · Accident · 1 fatal · Class 3 · Field · Final report · Sep 6, 2019 · N767FS · Destroyed
  > The pilot's loss of pitch control due to the in-flight opening of the canopy for reasons that could not be determined.
- [NTSB CEN19LA319](https://openairdocs.org/ntsb/CEN19LA319.md): Lancair LC41-550FG · Branson, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 2, 2019 · N405JA · Substantial damage
  > A total loss of engine power after takeoff for undetermined reasons.
- [NTSB WPR19LA249](https://openairdocs.org/ntsb/WPR19LA249.md): Hughes 369 · Asotin, WA · Accident · No injuries · Class 3 · Limited · Final report · Sep 1, 2019 · N54528 · Substantial damage
  > A loss of control for undetermined reasons.
- [NTSB CEN19LA299](https://openairdocs.org/ntsb/CEN19LA299.md): Piper PA28 · Conroe, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 31, 2019 · N55633 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB CEN19LA292](https://openairdocs.org/ntsb/CEN19LA292.md): Cessna 172 · Denver, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 29, 2019 · N53432 · Substantial damage
  > A total loss of electrical power for reasons that could not be determined, and the student pilot’s subsequent runway overrun during a no-flap landing.
- [NTSB GAA19CA514](https://openairdocs.org/ntsb/GAA19CA514.md): Hughes 269A · Shamokin, PA · Accident · No injuries · Data collection · Final report · Aug 25, 2019 · N653CH · Substantial damage
  > The pilot's improper landing flare during an autorotation, which resulted in a hard landing. Contributing to the accident was a loss of engine power for reasons that could not be determined because postaccident examination revealed no evidence of any…
- [NTSB CEN19LA300](https://openairdocs.org/ntsb/CEN19LA300.md): Cessna 425 · Bethany, OK · Accident · No injuries · Class 3 · Limited · Final report · Aug 25, 2019 · N300GD · Substantial damage
  > A loss of control during the initial climb for undetermined reasons, which resulted in an aborted takeoff and runway excursion.
- [NTSB WPR19LA239](https://openairdocs.org/ntsb/WPR19LA239.md): Piper PA24 · Wendover, UT · Accident · No injuries · Class 3 · Limited · Final report · Aug 24, 2019 · N6696P · Substantial damage
  > Failure of the landing gear solenoid, which resulted in failure of the landing gear position switch, and the pilot's subsequent inability to extend the gear using the manual emergency extension system for undetermined reasons.
- [NTSB ERA19LA255](https://openairdocs.org/ntsb/ERA19LA255.md): Cessna 310 · Tampa, FL · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2019 · N2299F · Substantial damage
  > The failure of the right main landing gear to fully extend and lock for reasons that could not be determined.
- [NTSB CEN19LA281](https://openairdocs.org/ntsb/CEN19LA281.md): Stinson 108 · Grand Rapids, MN · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 21, 2019 · N647C · Substantial damage
  > A loss of engine power after takeoff for undetermined reasons.
- [NTSB WPR19LA237](https://openairdocs.org/ntsb/WPR19LA237.md): Cessna T210 · Eugene, OR · Accident · No injuries · Class 3 · Limited · Final report · Aug 20, 2019 · N501SF · Substantial damage
  > The failure of the landing gear electric motor to shut off after landing gear retraction, which resulted in the motor overheating, burning out, and producing smoke in the cockpit. The pilot’s decision to land with the landing gear retracted resulted in…
- [NTSB ERA19FA249](https://openairdocs.org/ntsb/ERA19FA249.md): Cessna T303 · Lagrangeville, NY · Accident · 2 fatal · Class 3 · Field · Final report · Aug 17, 2019 · N303TL · Destroyed
  > A partial loss of engine power in both engines during initial climb for reasons that could not be determined based on the available information.
- [NTSB CEN19LA269](https://openairdocs.org/ntsb/CEN19LA269.md): Bell 206 · Blair, NE · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 16, 2019 · N106PD · Substantial damage
  > The loss of main rotor rpm for reasons that could not be determined based on the available evidence, which resulted in a hard landing.
- [NTSB CEN19FA270](https://openairdocs.org/ntsb/CEN19FA270.md): Pitts S2 · New Orleans, LA · Accident · 2 fatal · Class 3 · Field · Final report · Aug 16, 2019 · N600DF · Destroyed
  > A loss of control for undetermined reasons.

Next page: https://openairdocs.org/ntsb-findings/05000000/cases.md?page=10

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '05000000'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/05000000/cases?page=9

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