# Final 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 1 of 41 · 2,010 cases

## Latest cases

- [NTSB ERA26LA311](https://openairdocs.org/ntsb/ERA26LA311.md): HPH Glasflugel 304CZ · Xenia, OH · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2026 · N304BS · Substantial damage
  > The glider’s encounter with atmospheric conditions where lift was not sufficient to maintain flight.
- [NTSB CEN26LA294](https://openairdocs.org/ntsb/CEN26LA294.md): Pipistrel Taurus Electro G2.5 · Hempstead, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 15, 2026 · N984TP · Substantial damage
  > The pilot’s failure to properly stow the motor in preparation for approach and landing that resulted in a loss of airspeed and an inadvertent aerodynamic stall and spin.
- [NTSB WPR26LA265](https://openairdocs.org/ntsb/WPR26LA265.md): Vans RV-7A · Covington, WA · Accident · No injuries · Class 4 · Limited · Final report · Jul 17, 2026 · N987CW · Substantial damage
  > The pilot’s improper pitch control during landing, which resulted in a bounced landing, nose landing gear collapse, and nose over.
- [NTSB WPR26LA213](https://openairdocs.org/ntsb/WPR26LA213.md): Moose SR 2500 · Sonoma, CA · Accident · Serious injuries · Class 4 · Limited · Final report · May 27, 2026 · N135DS · Substantial damage
  > The pilot's failure to maintain airspeed during a go-around in shifting wind conditions, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.
- [NTSB WPR26LA134](https://openairdocs.org/ntsb/WPR26LA134.md): Zlin Aviation Sro Savage CUB-S · Young, AZ · Accident · No injuries · Class 4 · Limited · Final report · Mar 20, 2026 · N9111 · Substantial damage
  > The pilot’s failure to maintain adequate clearance from trees during landing.
- [NTSB DCA26LA159](https://openairdocs.org/ntsb/DCA26LA159.md): Pyka Pelican Cargo · Summit Point, WV · Accident · No injuries · Class 4 · Limited · Final report · Mar 17, 2026 · N136ZP · Substantial damage
  > The inaccurate obstacle height entered into mission planning that resulted in the aircraft wing’s impact with a tree during descent, resulting resulted in a loss of control.
- [NTSB WPR26LA115](https://openairdocs.org/ntsb/WPR26LA115.md): Mightyfly MF-100 · Atwater, CA · Accident · No injuries · Class 4 · Limited · Final report · Mar 2, 2026 · N258MF · Destroyed
  > A control system anomaly, which resulted in the overload and failure of one of the propulsion motor systems during the transition from hover to forward flight.
- [NTSB ERA26LA133](https://openairdocs.org/ntsb/ERA26LA133.md): Morris Bradley D Zenith Stol CH-701 · Hendersonville, NC · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 1, 2026 · N123XP · Substantial damage
  > The pilot’s failure to maintain directional control during takeoff, which resulted in a runway excursion and impact with trees.
- [NTSB ERA26LA094](https://openairdocs.org/ntsb/ERA26LA094.md): Sled Thomas Helicycle · Mobile, AL · Accident · Minor injuries · Class 4 · Limited · Final report · Jan 8, 2026 · N3722T · Substantial damage
  > The pilot’s failure to maintain yaw control during a crosswind approach, which resulted in a loss of tail rotor effectiveness, an uncommanded spin, hard landing, and subsequent rollover.
- [NTSB WPR26LA072](https://openairdocs.org/ntsb/WPR26LA072.md): Zenith 750 · Yacolt, WA · Accident · No injuries · Class 4 · Limited · Final report · Dec 23, 2025 · N186BG · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA26LA058](https://openairdocs.org/ntsb/ERA26LA058.md): Huebbe Tom MAX TH · Inverness Highlands South, FL · Accident · No injuries · Class 4 · Limited · Final report · Nov 26, 2025 · N48TH · Substantial damage
  > The pilot’s failure to maintain directional control on takeoff. Contributing to the accident was the aircraft design that did not incorporate differential braking.
- [NTSB CEN26LA054](https://openairdocs.org/ntsb/CEN26LA054.md): Lou Malinchak Titan T-51D · Bristow, OK · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 26, 2025 · N251LM · Substantial damage
  > The collision with two deer during takeoff which resulted in a loss of control and impact with terrain.
- [NTSB WPR26LA015](https://openairdocs.org/ntsb/WPR26LA015.md): Cessna 172S · Lathrop, CA · Accident · No injuries · Class 4 · Limited · Final report · Oct 4, 2025 · N103VK · Substantial damage
  > An inflight collision with a bird.
- [NTSB CEN25LA405](https://openairdocs.org/ntsb/CEN25LA405.md): Sukhoi SU-26MX · Longmont, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 30, 2025 · N25SU · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB WPR25LA280](https://openairdocs.org/ntsb/WPR25LA280.md): Weaver Harmon Rocket · Hayden, ID · Accident · No injuries · Class 4 · Limited · Final report · Sep 17, 2025 · N686X · Substantial damage
  > The pilot’s loss of directional control during landing, which resulted in a runway excursion and collision with terrain.
- [NTSB WPR25LA308](https://openairdocs.org/ntsb/WPR25LA308.md): Thomas Graham Teenie Two · Chehalis, WA · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 11, 2025 · N311TS · Substantial damage
  > The pilot's improper decision to take off with the airplane over its maximum allowable gross weight, which degraded its climb performance and led to a subsequent off airport landing.
- [NTSB CEN25LA390](https://openairdocs.org/ntsb/CEN25LA390.md): Cameron Balloons US Z-90 · Cedar Springs, MI · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 9, 2025 · N418RX · No damage
  > The passenger’s loss of balance during landing that resulted in a serious injury.
- [NTSB WPR25LA271](https://openairdocs.org/ntsb/WPR25LA271.md): Naval Aircraft Factory N3N-3 · Red Lodge, MT · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 31, 2025 · N45254 · Substantial damage
  > The pilot’s failure to maintain clearance from obstacles during an aborted landing. Contributing to the accident was the high density altitude weather condition.
- [NTSB CEN25LA258](https://openairdocs.org/ntsb/CEN25LA258.md): Zenith Stol CH701 · Blaine, MN · Accident · No injuries · Class 4 · Limited · Final report · Jul 17, 2025 · N237FC · Substantial damage
  > The pilot’s failure to maintain directional control while landing with a crosswind.
- [NTSB WPR25LA201](https://openairdocs.org/ntsb/WPR25LA201.md): Lancair IV · Alpine, WY · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 30, 2025 · N124GH · Substantial damage
  > The pilot’s loss of visual reference during the landing approach which resulted in a collision with water.
- [NTSB CEN25LA209](https://openairdocs.org/ntsb/CEN25LA209.md): Vans RV-14 · Sealy, TX · Accident · No injuries · Class 4 · Limited · Final report · Jun 17, 2025 · N852BJ · Substantial damage
  > The pilot’s improper use of airplane’s wheel brakes during the landing roll-out.
- [NTSB ERA25LA196](https://openairdocs.org/ntsb/ERA25LA196.md): Chris Wallen/Michael Pliske Just Acft Highlander · Brasstown, NC · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 30, 2025 · N788MP · Substantial damage
  > The pilot’s inadvertent application of brake pressure during landing, which resulted in a nose over.
- [NTSB ERA25LA182](https://openairdocs.org/ntsb/ERA25LA182.md): Robb Aventura II · Elmore, AL · Accident · Minor injuries · Class 4 · Limited · Final report · Apr 13, 2025 · N744RA · Substantial damage
  > The pilot’s failure to configure the airplane for a water landing.
- [NTSB ERA25LA181](https://openairdocs.org/ntsb/ERA25LA181.md): Schleicher ASW-19 · Zephyrhills, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 2, 2025 · N37PL · Substantial damage
  > The pilot’s inadequate inflight planning and an encounter with atmospheric conditions where the lift was not sufficient to maintain flight, resulting in an off-airport landing and collision with a fence.
- [NTSB DCA25LA174](https://openairdocs.org/ntsb/DCA25LA174.md): Pyka Pelican · Dixon, CA · Accident · No injuries · Class 4 · Limited · Final report · Mar 28, 2025 · N939NP · Substantial damage
  > The flight control system’s unanticipated transition to takeoff abort mode due to a software error in the autonomous flight control system, which resulted in a premature throttle reduction and hard landing.
- [NTSB WPR25LA112](https://openairdocs.org/ntsb/WPR25LA112.md): Enstrom 280FX · Waterford, CA · Accident · Serious injuries · Class 4 · Limited · Final report · Mar 15, 2025 · N402TA · Destroyed
  > The pilot’s failure to maintain clearance from water while operating at a low altitude.
- [NTSB CEN25LA123](https://openairdocs.org/ntsb/CEN25LA123.md): Caldwell C W 162F · Mounds, OK · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 13, 2025 · N124CW · Destroyed
  > The student pilot’s failure to maintain control of the helicopter during a precautionary landing, which resulted in a dynamic roll over and postimpact fire.
- [NTSB ERA25LA131](https://openairdocs.org/ntsb/ERA25LA131.md): Mallory Horton AQUA-BEE · Miami, FL · Accident · No injuries · Class 4 · Limited · Final report · Feb 25, 2025 · N799RX · Substantial damage
  > The pilot’s failure to lower the landing gear before touchdown.
- [NTSB WPR25LA101](https://openairdocs.org/ntsb/WPR25LA101.md): Hughes OH-6A · Santa Teresa, NM · Accident · No injuries · Class 3 · Limited · Final report · Feb 22, 2025 · N4191T · Substantial damage
  > The flight instructor's failure to maintain helicopter control during a practice autorotation, which resulted in a hard landing and structural damage to the tail boom and subsequent failure of the tail rotor drive system.
- [NTSB WPR25LA103](https://openairdocs.org/ntsb/WPR25LA103.md): Amazon.Com Services MK30 · Pendleton, OR · Accident · No injuries · Class 4 · Limited · Final report · Feb 21, 2025 · N265PA · Substantial damage
  > The unmanned aircraft system’s failure to maintain clearance from an obstacle, which resulted in a loss of control and impact with terrain.
- [NTSB WPR25LA083](https://openairdocs.org/ntsb/WPR25LA083.md): Charles E Spencer CCK-1865 · Vacaville, CA · Accident · No injuries · Class 4 · Limited · Final report · Jan 24, 2025 · N730CS · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll.
- [NTSB CEN25LA078](https://openairdocs.org/ntsb/CEN25LA078.md): Zenith Stol CH750 · Byron, IL · Accident · No injuries · Class 4 · Limited · Final report · Jan 15, 2025 · N749WJ · Substantial damage
  > The pilot inadvertently moved the ignition key to the off position and broke the key, which resulted in a loss of engine power and subsequent forced landing.
- [NTSB WPR25LA064](https://openairdocs.org/ntsb/WPR25LA064.md): Amazon.Com Services MK30 · Pendleton, OR · Accident · No injuries · Class 4 · Limited · Final report · Dec 16, 2024 · N223PA · Substantial damage
  > The incorrect altitude indication by test software during landing.
- [NTSB WPR25LA063](https://openairdocs.org/ntsb/WPR25LA063.md): Amazon.Com Services MK30 · Pendleton, OR · Accident · No injuries · Class 4 · Limited · Final report · Dec 16, 2024 · N209PA · Substantial damage
  > An improper altitude indication from a recent software update, which resulted in a loss of engine power in flight.
- [NTSB ERA25LA064](https://openairdocs.org/ntsb/ERA25LA064.md): AMS Flight D O O Carat A · Centralhatchee, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 20, 2024 · N17GF · Substantial damage
  > Maintenance personnel’s failure to comply with the engine manufacturer’s guidance, which resulted in improper valvetrain clearances, unseating of the intake valve keepers, and a total loss of engine power.
- [NTSB WPR25FA020](https://openairdocs.org/ntsb/WPR25FA020.md): Extra Flugzeugbau EA 300/L · Las Cruces, NM · Accident · 1 fatal · Class 3 · Field · Final report · Oct 20, 2024 · N512DW · Destroyed
  > The pilot’s entry into an aerobatic maneuver at an altitude that was insufficient to complete a successful recovery, which resulted in an accelerated stall and impact with terrain.
- [NTSB CEN25LA013](https://openairdocs.org/ntsb/CEN25LA013.md): Rotorway Exec · Plymouth, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 11, 2024 · N314AC · Substantial damage
  > A loss of control due to the failed forward tail rotor belt as a result of the owner’s failure to follow the helicopter manufacturer’s tail rotor belt replacement recommendations.
- [NTSB CEN25LA010](https://openairdocs.org/ntsb/CEN25LA010.md): Zodiac 601 · Augusta, KS · Accident · No injuries · Class 4 · Limited · Final report · Oct 9, 2024 · N601KM · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll.
- [NTSB WPR24FA309](https://openairdocs.org/ntsb/WPR24FA309.md): Nanchang China CJ-6A · Lancaster, CA · Accident · 1 fatal · Class 3 · Field · Final report · Sep 22, 2024 · N313YK · 2 aircraft · Substantial damage
  > The CJ-6A pilot’s failure to maintain separation and the Yak pilot’s failure to monitor the other airplane during a detachment, which resulted in a midair collision.
- [NTSB WPR24LA317](https://openairdocs.org/ntsb/WPR24LA317.md): Yakovlev YAK-50 · Watsonville, CA · Accident · No injuries · Class 4 · Limited · Final report · Sep 20, 2024 · N613BM · 2 aircraft · Substantial damage
  > The Yak-50 pilot’s failure to maintain clearance from another airplane while taxiing and maneuvering. Contributing to the accident was the pilot’s inattention due to a distraction inside the cockpit.
- [NTSB CEN24LA348](https://openairdocs.org/ntsb/CEN24LA348.md): Beech A36 · Amarillo, TX · Accident · No injuries · Class 4 · Limited · Final report · Sep 10, 2024 · N6931T · Substantial damage
  > The pilot’s failure to extend the airplane’s landing gear before landing.
- [NTSB WPR24LA302](https://openairdocs.org/ntsb/WPR24LA302.md): Amazon.Com Services MK30 · Pendleton, OR · Accident · No injuries · Class 4 · Limited · Final report · Sep 6, 2024 · N213PA · 2 aircraft · Destroyed
  > The operator’s failure to maintain separation between two drones during dual simulated engine out recoveries, which resulted in a midair collision.
- [NTSB ERA24FA362](https://openairdocs.org/ntsb/ERA24FA362.md): Schleicher Alexander ASH 26 E · Waynesville, OH · Accident · 1 fatal · Class 3 · Field · Final report · Aug 30, 2024 · N264JM · Substantial damage
  > A loss of control on takeoff for undetermined reasons.
- [NTSB CEN24LA330](https://openairdocs.org/ntsb/CEN24LA330.md): Esqual VM1 · Oshkosh, WI · Accident · No injuries · Class 4 · Limited · Final report · Aug 27, 2024 · N151GH · Substantial damage
  > The pilot’s premature rotation during takeoff which resulted in the airplane settling back to the runway and the subsequent separation of the left wheel.
- [NTSB ERA24LA284](https://openairdocs.org/ntsb/ERA24LA284.md): Corella Neil RV9A · Saluda, SC · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 30, 2024 · N94NF · Substantial damage
  > The pilot’s failure to maintain an appropriate glide path during the landing approach in variable wind conditions, which resulted in collision with trees.
- [NTSB ERA24LA298](https://openairdocs.org/ntsb/ERA24LA298.md): Globe GC1B · Peachtree City, GA · Accident · No injuries · Class 4 · Limited · Final report · Jun 25, 2024 · N3301K · Substantial damage
  > A right main landing gear collapse during landing.
- [NTSB ERA24LA258](https://openairdocs.org/ntsb/ERA24LA258.md): Clapp Saberwing · Valdosta, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 11, 2024 · N120SW · Substantial damage
  > The total loss of engine power due to the shearing of the woodruff key that indexed the crankshaft gear and hub assembly to the crankshaft, which resulted in the gear and hub rotating from their indexed position and caused the crankshaft-to-camshaft timing to…
- [NTSB CEN24LA214](https://openairdocs.org/ntsb/CEN24LA214.md): Stinson Vultee V-77 · Slaton, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 9, 2024 · N88026 · Substantial damage
  > The pilot’s failure to maintain directional control after landing in gusting wind conditions which resulted in a runway excursion and the airplane nosing over. Contributing was the pilot’s decision to conduct the flight in very strong, gusting wind conditions.
- [NTSB WPR24LA188](https://openairdocs.org/ntsb/WPR24LA188.md): David Fisher Murphy Moose · Ocean Shores, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 8, 2024 · N9695W · Substantial damage
  > The pilot’s hard, bounced landing, subsequent failure to maintain adequate airspeed, and his exceedance of the airplane’s critical angle of attack during a go-around, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB WPR24FA185](https://openairdocs.org/ntsb/WPR24FA185.md): Rans S-12XL Airaile · Picacho Peak, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Jun 8, 2024 · N518D · Substantial damage
  > The pilot’s decision to conduct a low-altitude flight in mountainous terrain and his subsequent loss of airplane control after encountering mechanical turbulence, which resulted in an impact with the terrain.

Next page: https://openairdocs.org/ntsb.md?engine=99999&status=final&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."completionStatus" = 'Completed'
  AND 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&status=final

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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.