# NTSB investigations: Amateur-built UNKNOWN ENG

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 5 of 41 · 2,048 cases

## Cases, newest first

- [NTSB CEN21LA250](https://openairdocs.org/ntsb/CEN21LA250.md): Vans RV9 · West Portsmouth, OH · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 4, 2021 · N20YY · Substantial damage
  > The pilot’s improper use of the airplane’s fuel system, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB WPR21LA219](https://openairdocs.org/ntsb/WPR21LA219.md): Stoddard Hamilton Glasair II · Darby, MT · Accident · Serious injuries · Class 3 · Limited · Final report · May 29, 2021 · N8176J · Substantial damage
  > The pilot’s impact with terrain during a go-around following an attempted precautionary landing due to a low oil pressure indication. The reason for the low oil pressure indication could not be determined based on the available information.
- [NTSB ERA21LA236](https://openairdocs.org/ntsb/ERA21LA236.md): Maxson Phil Zodiac CH601XL · Winder, GA · Accident · Minor injuries · Class 4 · Limited · Final report · May 29, 2021 · N601MX · Substantial damage
  > Pilot’s inadequate supervision of the pilot rated passenger’s actions, which led to a high descent rate and collision with obstacles.
- [NTSB WPR21FA210](https://openairdocs.org/ntsb/WPR21FA210.md): Mark Coby Early Bird Jenny · Stoneville, NC · Accident · 1 fatal · Class 3 · Field · Final report · May 27, 2021 · N831HC · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle of attack during the takeoff initial climb, which resulted in an aerodynamic stall and a loss of control.
- [NTSB WPR21LA178](https://openairdocs.org/ntsb/WPR21LA178.md): Diamond Aircraft Ind DA 42 · Brigham City, UT · Accident · No injuries · Class 4 · Limited · Final report · Apr 27, 2021 · N350TS · Substantial damage
  > The student pilot's unintentional selection of raising the landing gear instead of the flaps during a touch-and-go landing, and the flight instructor's delayed remedial action, which resulted in the landing gear retracting during the landing roll.
- [NTSB ERA21LA192](https://openairdocs.org/ntsb/ERA21LA192.md): Meyeres F L/Meyeres M M Skystar Ktfox Clsc 4 · Mountain Rest, SC · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 25, 2021 · N90KF · Substantial damage
  > A partial loss of engine power due to carburetor icing. Contributing to the accident was the engine’s lack of carburetor heat.
- [NTSB WPR21LA165](https://openairdocs.org/ntsb/WPR21LA165.md): Bryan S Happell TANGO2 · Hayden, ID · Accident · No injuries · Class 4 · Limited · Final report · Apr 17, 2021 · N886T · Substantial damage
  > The pilot’s failure to control the pitch attitude of the gyroplane during landing, which resulted in a loss of control, runway excursion and collision with terrain.
- [NTSB ERA21LA167](https://openairdocs.org/ntsb/ERA21LA167.md): Ayres S2R-G6 · Vienna, GA · Accident · No injuries · Class 4 · Limited · Final report · Mar 31, 2021 · N3299X · Destroyed
  > The pilot’s improper decision to attempt a takeoff with a quartering tailwind and his failure to reject the takeoff in a timely manner, which resulted in a runway excursion.
- [NTSB ERA21LA138](https://openairdocs.org/ntsb/ERA21LA138.md): Dassault Mirage F1 B · Panama City, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 25, 2021 · N601AX · Substantial damage
  > Nose landing gear contact with a raised aircraft arresting system during takeoff, which damaged components of the nose wheel steering system and resulted in an uncommanded left turn and loss of directional control.
- [NTSB WPR21LA094](https://openairdocs.org/ntsb/WPR21LA094.md): Randy Wayne Maloney M1 · Eagle Point, OR · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 21, 2021 · N322TR · Destroyed
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB CEN21LA092](https://openairdocs.org/ntsb/CEN21LA092.md): Sonex Tailwheel · Burleson, TX · Accident · 1 fatal · Class 3 · Limited · Final report · Dec 19, 2020 · N935EK · Substantial damage
  > A total loss of engine power due to engine seizure. Contributing to the accident was the pilot decision not to orbit the airport, as originally planned.
- [NTSB WPR21LA155](https://openairdocs.org/ntsb/WPR21LA155.md): Aerostar International RX 8 · St. George, UT · Accident · Serious injuries · Class 4 · Limited · Final report · Nov 29, 2020 · N9051Y · No damage
  > The pilot’s failure to maintain control of the balloon and a member of the ground crews entanglement with a tether rope, which resulted in a serious injury when they fell to the ground after the balloon unexpectedly ascended.
- [NTSB WPR21LA071](https://openairdocs.org/ntsb/WPR21LA071.md): Co Z Cozy · Compton, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 17, 2020 · N82V · Substantial damage
  > The partial loss of engine power due to an improperly installed sparkplug.
- [NTSB CEN21LA074](https://openairdocs.org/ntsb/CEN21LA074.md): Zlin Savage Cub-S · Francis, OK · Accident · No injuries · Class 4 · Limited · Final report · Nov 15, 2020 · N9111 · Substantial damage
  > The pilot’s selection of unsuitable terrain for the landing, which resulted in a nose over when the airplane encountered soft sand during the landing roll.
- [NTSB ERA21LA048](https://openairdocs.org/ntsb/ERA21LA048.md): Vans RV4 · Milton, FL · Accident · No injuries · Class 4 · Limited · Final report · Nov 14, 2020 · N311SV · Substantial damage
  > The pilot's failure to maintain directional control during a crosswind landing.
- [NTSB CEN21LA053](https://openairdocs.org/ntsb/CEN21LA053.md): Trick Trikes Stss · Holden, MO · Accident · 1 fatal · Class 3 · Limited · Final report · Nov 11, 2020 · N5152E · Destroyed
  > The noncertificated pilot’s failure to maintain aircraft control during takeoff.
- [NTSB ERA21LA027](https://openairdocs.org/ntsb/ERA21LA027.md): Muse Stol CH 750 · Sewanee, TN · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 14, 2020 · N750JD · Substantial damage
  > The airplane’s encounter with a downdraft during the initial climb, which resulted in an impact with trees.
- [NTSB CEN21LA016](https://openairdocs.org/ntsb/CEN21LA016.md): Kitfox Classic 4 · New Carlisle, OH · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 13, 2020 · N47KC · Destroyed
  > The pilot’s failure to maintain pitch control of the airplane during landing, which caused the airplane to nose over during landing roll. Contributing to the accident was the main landing gear modification which increased the airplane’s tendency to nose over…
- [NTSB ERA20LA324](https://openairdocs.org/ntsb/ERA20LA324.md): Vans RV 8 · Hilliard, FL · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 21, 2020 · N800PB · Destroyed
  > A total loss of engine power due to oil starvation.
- [NTSB ERA20CA319](https://openairdocs.org/ntsb/ERA20CA319.md): Rotorway Exec 162F · Kenansville, FL · Accident · No injuries · Class 4 · Data collection · Final report · Sep 10, 2020 · N57AN · Substantial damage
  > The pilot’s failure to maintain control of the helicopter during takeoff.
- [NTSB CEN20LA440](https://openairdocs.org/ntsb/CEN20LA440.md): Swearingen SA227 · San Antonio, TX · Accident · No injuries · Class 3 · Limited · Final report · Sep 5, 2020 · N362AE · Substantial damage
  > The pilot’s failure to fly a stabilized approach which resulted in a hard landing and loss of control.
- [NTSB CEN20LA360](https://openairdocs.org/ntsb/CEN20LA360.md): Cessna 180 · St Louis, MO · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 22, 2020 · N7620A · Substantial damage
  > A total loss of engine power due to improper maintenance of the mixture control cable and attachment hardware, which led to a forced landing into a congested area.
- [NTSB WPR20CA293](https://openairdocs.org/ntsb/WPR20CA293.md): Cessna 172 · Phoenix, AZ · Accident · No injuries · Class 4 · Data collection · Final report · Aug 18, 2020 · N103VK · Substantial damage
  > The pilot's improper pitch attitude and landing flare, which resulted in a hard landing. Contributing to the accident was the flight instructors delayed remedial action.
- [NTSB CEN20CA337](https://openairdocs.org/ntsb/CEN20CA337.md): Evektor Aerotechnik L13 · Frankenmuth, MI · Accident · Serious injuries · Class 4 · Data collection · Final report · Aug 16, 2020 · N334BA · Substantial damage
  > The pilot's failure to stow the speed brake prior to attempting takeoff.
- [NTSB CEN20CA311](https://openairdocs.org/ntsb/CEN20CA311.md): Air Tractor AT 401 · Burlington, CO · Accident · Minor injuries · Class 4 · Data collection · Final report · Jul 27, 2020 · N9190Q · Substantial damage
  > The pilot’s failure to maintain clearance from guy-wires during low-altitude agricultural operations.
- [NTSB CEN20CA277](https://openairdocs.org/ntsb/CEN20CA277.md): Kitfox Kitfox Sport · Rand, CO · Accident · Minor injuries · Class 4 · Data collection · Final report · Jul 12, 2020 · N702KS · Substantial damage
  > The encounter with the downdrafts during the attempted takeoff, which resulted in decreased airplane's climb performance and subsequent impact with terrain.
- [NTSB CEN20LA278](https://openairdocs.org/ntsb/CEN20LA278.md): Grumman G164 · Springfield, CO · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 10, 2020 · N6917K · Destroyed
  > The pilot’s loss of visibility in the cockpit due to foam created by the chemicals loaded in the hopper, which resulted in collision with terrain. Contributing to the accident was the combining of chemicals known to produce foam and the pilot’s failure to…
- [NTSB CEN20LA267](https://openairdocs.org/ntsb/CEN20LA267.md): Titan Tornado · Mankato, KS · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 6, 2020 · N900WH · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on available information.
- [NTSB CEN20LA259](https://openairdocs.org/ntsb/CEN20LA259.md): Sopwith Type 9400 · Van Alstyne, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 3, 2020 · N5539 · Substantial damage
  > An inflight loss of aileron control due to movement of a control connector.
- [NTSB WPR20LA201](https://openairdocs.org/ntsb/WPR20LA201.md): Avia Stroitel AC-5M · Bend, OR · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 30, 2020 · N263R · Destroyed
  > A loss of control just after takeoff for reasons that could not be determined based on the available information.
- [NTSB ANC20CA062](https://openairdocs.org/ntsb/ANC20CA062.md): Cub Crafters CCK-1865 · Juneau, AK · Accident · No injuries · Class 4 · Data collection · Final report · Jun 28, 2020 · N153CC · Substantial damage
  > The pilot's failure to maintain directional control during the landing rollout, which resulted in a ground loop.
- [NTSB WPR20LA177](https://openairdocs.org/ntsb/WPR20LA177.md): Zenair CH601 · Maricopa, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 10, 2020 · N6402X · Destroyed
  > The pilot’s loss of situational awareness and descent below pattern altitude during the landing approach, which resulted in collision with terrain at night.
- [NTSB WPR20CA142](https://openairdocs.org/ntsb/WPR20CA142.md): N126c CCX-2000 · Heber City, UT · Accident · No injuries · Class 4 · Data collection · Final report · May 8, 2020 · N363EX · Substantial damage
  > The front seat pilot's failure to maintain directional control during the landing roll, and the rear seat pilot's delayed remedial control inputs that subsequently resulted in a ground loop. Contributing to the accident was a lack of communication by both…
- [NTSB ERA20CA152](https://openairdocs.org/ntsb/ERA20CA152.md): Holmgren Bearhawk · Ahoskie, NC · Accident · No injuries · Data collection · Final report · Apr 17, 2020 · N118CR · Substantial damage
  > The collapse of the right main landing gear during a bounced, crosswind landing.
- [NTSB CEN20LA134](https://openairdocs.org/ntsb/CEN20LA134.md): Muse P51D · Mesquite, TX · Accident · 1 fatal · Class 3 · Limited · Final report · Mar 29, 2020 · N151JD · Destroyed
  > The pilot’s inadvertent exceedance of the airplane’s critical angle of attack for undetermined reasons, which resulted in an aerodynamic stall, loss of control, and subsequent impact with terrain.
- [NTSB ERA20CA107](https://openairdocs.org/ntsb/ERA20CA107.md): Orlican L60 · Frederick, MD · Accident · No injuries · Data collection · Final report · Feb 21, 2020 · N71GC · Substantial damage
  > The pilot's failure to maintain airplane control during the approach, which resulted in the airplane ballooning and then veering left upon landing and the right wing impacting the runway.
- [NTSB CEN20CA067](https://openairdocs.org/ntsb/CEN20CA067.md): Glasair 1 · Greenville, TX · Accident · Minor injuries · Data collection · Final report · Jan 26, 2020 · N238SH · Substantial damage
  > The pilot's failure to maintain a proper descent rate, which resulted in a hard landing, and his subsequent loss of airplane control during an attempted go-around.
- [NTSB CEN20CA062](https://openairdocs.org/ntsb/CEN20CA062.md): Beech 76 · St. Charles, MO · Accident · No injuries · Data collection · Final report · Jan 16, 2020 · N6630D · Substantial damage
  > The pilot receiving instruction’s misunderstanding of the flight instructor’s instruction and the pilot's and the instructor’s insufficient use of rudder while adding power to the operating engine, which resulted in the airplane rolling left and the wing…
- [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 ERA20LA045](https://openairdocs.org/ntsb/ERA20LA045.md): Yakovlev YAK 52 · Wrightsville, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 30, 2019 · N52CY · Substantial damage
  > A total loss of engine power due to the failure of the No. 5 cylinder exhaust valve, which resulted in an forced off-airport landing.
- [NTSB CEN20CA033](https://openairdocs.org/ntsb/CEN20CA033.md): Piper PA18 · Kerrville, TX · Accident · No injuries · Data collection · Final report · Nov 23, 2019 · N530AK · Substantial damage
  > The pilot’s loss of airplane control during the landing flare, which resulted in a loss of directional control and ground-loop.
- [NTSB WPR20LA026](https://openairdocs.org/ntsb/WPR20LA026.md): Piper PA 18 · Livermore, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 16, 2019 · N8589D · Substantial damage
  > The improper installation of the flight control stick, which resulted in separation of the flight control stick from the stick stub assembly and an uncontrolled descent and impact with terrain.
- [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 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 GAA20CA043](https://openairdocs.org/ntsb/GAA20CA043.md): Zenair Zenith 801 · Knoxville, TN · Accident · No injuries · Data collection · Final report · Oct 18, 2019 · N801PZ · Substantial damage
  > The pilot's failure to maintain a proper descent rate during the approach and his improper landing flare, which resulted in a hard landing.
- [NTSB ERA20FA013](https://openairdocs.org/ntsb/ERA20FA013.md): Sportine Aviacija LAK17B · Tamaqua, PA · Accident · 1 fatal · Class 3 · Field · Final report · Oct 18, 2019 · N830DK · Substantial damage
  > The pilot's exceedance of the glider's critical angle of attack while climbing in thermal lift, which resulted in an aerodynamic stall/spin.
- [NTSB WPR20LA007](https://openairdocs.org/ntsb/WPR20LA007.md): Hiller UH 12E · Susanville, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 14, 2019 · N131HA · Substantial damage
  > A partial loss of engine power due to multiple overtemperature events and a hot start event, which resulted in thermally damaged internal components of the engine. Contributing to the accident was the lack of suitable terrain on which to perform the forced…
- [NTSB GAA20CA018](https://openairdocs.org/ntsb/GAA20CA018.md): Foxworthy Rick A Sonex · Langley, WA · Accident · Serious injuries · Data collection · Final report · Oct 11, 2019 · N612RF · Substantial damage
  > The pilot's failure to maintain a proper approach path, which resulted in impact with a tree.
- [NTSB WPR20FA005](https://openairdocs.org/ntsb/WPR20FA005.md): Bede BD5 · Camarillo, CA · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2019 · N501BD · Substantial damage
  > The No. 4 connecting rod’s bearing shift and separation of the No. 4 connecting rod, which resulted in a total loss of engine power and subsequent forced landing.
- [NTSB ERA20MA001](https://openairdocs.org/ntsb/ERA20MA001.md): Boeing B17 · Windsor Locks, CT · Accident · 7 fatal · Class 2 · Major · Final report · Oct 2, 2019 · N93012 · Destroyed
  > The pilot’s failure to properly manage the airplane’s configuration and airspeed after he shut down the No. 4 engine following its partial loss of power during the initial climb. Contributing to the accident was the pilot/maintenance director’s inadequate…

Next page: https://openairdocs.org/ntsb.md?engine=99999&page=6

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=99999&page=5

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