# NTSB investigations: Amateur-built UNKNOWN ENG, ID

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.

## Latest cases

- [NTSB WPR26FA101](https://openairdocs.org/ntsb/WPR26FA101.md): Sonex Onex · Caldwell, ID · Accident · 1 fatal · Class 3 · Field · Preliminary report · Feb 6, 2026 · N362DZ · Destroyed
  > On February 6, 2026, about 0945 mountain standard time, a Sonex Onex airplane, N362DZ, was destroyed when it was involved in an accident near Caldwell, Idaho. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [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 WPR23LA314](https://openairdocs.org/ntsb/WPR23LA314.md): Reynolds Ronald B Team Acft Z-MAX · Rigby, ID · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 9, 2023 · N440ZM · Substantial damage
  > The loss of engine power during takeoff due to inadequately secured wires, which resulted in the wearing of the wires’ sheaths and the grounding of the airplane’s electrical system. Contributing to the accident was the pilot’s failure to maintain airplane…
- [NTSB WPR23LA292](https://openairdocs.org/ntsb/WPR23LA292.md): John Espe Cruiser · Buhl, ID · Accident · No injuries · Class 4 · Limited · Final report · Jul 29, 2023 · N314E · Substantial damage
  > The pilot's failure to maintain airplane control during landing with a gusting tail wind.
- [NTSB WPR22LA328](https://openairdocs.org/ntsb/WPR22LA328.md): Fall Martin Super CUB · Stanley, ID · Accident · No injuries · Class 4 · Limited · Final report · Aug 19, 2022 · N25MF · Substantial damage
  > The pilot’s failure to maintain airplane control during takeoff with a crosswind.
- [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 WPR15LA218](https://openairdocs.org/ntsb/WPR15LA218.md): Dafoe Gerald W Tcow Smith CUB · Cascade, ID · Accident · No injuries · Limited investigation · Final report · Jul 14, 2015 · N810GL · Substantial damage
  > A gouge in the right brake master cylinder piston O-ring, which resulted in a loss of brake pressure and reduced effectiveness after landing. Contributing to the accident was the pilot’s decision to operate the airplane with an ongoing brake issue.
- [NTSB WPR15LA001](https://openairdocs.org/ntsb/WPR15LA001.md): Gaston Thomas D Thunder Mustang · Council, ID · Accident · 1 fatal · Limited investigation · Final report · Oct 3, 2014 · N51TG · Destroyed
  > The pilot's failure to maintain control while maneuvering for landing following a loss of oil pressure. Contributing to the accident was foreign material contamination of the oil system due to improper maintenance.
- [NTSB WPR14CA294](https://openairdocs.org/ntsb/WPR14CA294.md): Thrush S2RHG T65 · Parma, ID · Accident · Minor injuries · Data collection · Final report · Jul 16, 2014 · N4036G · Substantial damage
  > The pilot's decision to take off with a tailwind, which resulted in the airplane not attaining sufficient airspeed for takeoff.
- [NTSB WPR14CA006](https://openairdocs.org/ntsb/WPR14CA006.md): Siemens Rotorway Exec 162F · Nampa, ID · Accident · Minor injuries · Data collection · Final report · Oct 5, 2013 · N104BJ · Substantial damage
  > A flight control malfunction during cruise flight for reasons that could not be determined. No follow-up examination was conducted due to a lapse in agency funding and subsequent government shutdown.
- [NTSB WPR12CA234](https://openairdocs.org/ntsb/WPR12CA234.md): Murphy Rebel · Hayden Lake, ID · Accident · No injuries · Data collection · Final report · May 3, 2012 · N1076D · Substantial damage
  > The pilots’ failure to position the landing gear for landing on the water, which resulted in a nose-over.
- [NTSB WPR12CA112](https://openairdocs.org/ntsb/WPR12CA112.md): Rockwell International S-2R · Yellow Pine, ID · Accident · No injuries · Data collection · Final report · Feb 14, 2012 · N8433V · Substantial damage
  > The pilot did not maintain directional control while landing on a snow-contaminated runway.
- [NTSB WPR12FA089](https://openairdocs.org/ntsb/WPR12FA089.md): Garza Lancair IV-TP · Boise, ID · Accident · 1 fatal · Field investigation · Final report · Feb 3, 2012 · N321LC · Destroyed
  > A loss or commanded reduction of engine power during the initial climb for reasons that could not be determined because of postaccident impact damage and fire destruction to engine systems and components. Also causal were the pilot's failure to maintain…
- [NTSB WPR10LA160](https://openairdocs.org/ntsb/WPR10LA160.md): Migas RV9-A · Twin Falls, ID · Accident · Serious injuries · Limited investigation · Final report · Mar 15, 2010 · N951DM · Substantial damage
  > The pilot's loss of directional control during landing roll for an undetermined reason.
- [NTSB WPR10CA109](https://openairdocs.org/ntsb/WPR10CA109.md): Young Dee C Kitfox II · St. Anthony, ID · Accident · No injuries · Data collection · Final report · Jan 12, 2010 · N345DY · Substantial damage
  > The pilot's improper landing flare, which resulted in a hard landing.
- [NTSB WPR09LA336](https://openairdocs.org/ntsb/WPR09LA336.md): Thomas C. Piper Murphy Rebel · Idaho Falls, ID · Accident · Minor injuries · Limited investigation · Final report · Jul 5, 2009 · N5PQ · Substantial damage
  > A total loss of engine power during initial climb due to fuel starvation. The underlying reason for the fuel starvation condition could not be determined.
- [NTSB SEA08CA153](https://openairdocs.org/ntsb/SEA08CA153.md): Hammond MH1 · McCall, ID · Accident · No injuries · Data collection · Final report · Jun 19, 2008 · N234MH · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll, resulting in a inadvertent ground loop. Contributing to the accident were variable winds that resulted in a landing tailwind, and rough terrain.
- [NTSB SEA08LA114](https://openairdocs.org/ntsb/SEA08LA114.md): Canup Titan Tornado S · Council, ID · Accident · No injuries · Limited investigation · Final report · Apr 26, 2008 · N706BC · Substantial damage
  > The failure of the tip of the wood propeller due to damage caused by a foreign object.
- [NTSB SEA07LA173](https://openairdocs.org/ntsb/SEA07LA173.md): Halsted Flightstar Pioneer · Nampa, ID · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 2007 · N8003U · Substantial damage
  > The failure (fracture) of the crankshaft of the non-certificated two-cycle engine during cruise flight. Factors include a ditch running through the field in which the pilot executed his engine-out forced landing.
- [NTSB SEA05LA008](https://openairdocs.org/ntsb/SEA05LA008.md): Higgins Acro-Sport II · Coeur d'Alene, ID · Accident · No injuries · Limited investigation · Final report · Oct 2, 2004 · N214JH · Substantial damage
  > The airplane's wood propeller separated from the airplane during cruise. A factor was the ditch that the airplane impacted during the landing roll subsequent to the forced landing.
- [NTSB SEA03CA144](https://openairdocs.org/ntsb/SEA03CA144.md): WSK PZL Mielec PZL-M-18 · Burley, ID · Accident · Minor injuries · Data collection · Final report · Jul 21, 2003 · N2709Q · Substantial damage
  > The pilot's failure to remove the elevator gust lock prior to flight. Factors include the pilot's inadequate preflight.
- [NTSB SEA03LA202](https://openairdocs.org/ntsb/SEA03LA202.md): North American P-51D · Jerome, ID · Accident · No injuries · Limited investigation · Final report · Jul 3, 2003 · N2869D · Substantial damage
  > The malfunction of the cooling system pressure relief valve and the pilot's failure to follow procedures. An engine over temperature, a coolant leak as a result of a relief valve failure, an obstructed windshield which was covered with coolant fluid, and an…
- [NTSB SEA01LA126](https://openairdocs.org/ntsb/SEA01LA126.md): Maule M-5-210C · Big Creek, ID · Accident · No injuries · Limited investigation · Final report · Jul 6, 2001 · N349X · Substantial damage
  > The pilot's failure to adequately compensate for the wind conditions during the landing roll. High and gusting winds were factors.
- [NTSB SEA86LA152](https://openairdocs.org/ntsb/SEA86LA152.md): Rockwell S2R · Caldwell, ID · Accident · No injuries · Limited investigation · Final report · Jun 25, 1986 · N4973X · Destroyed
  > Shortly after departure the pilot could not get any aileron response. A landing was attempted at a nearby airport where a go around became necessary. During the go around control of the aircraft was lost and it descended to ground impact. Investigation…
- [NTSB SEA83FA162](https://openairdocs.org/ntsb/SEA83FA162.md): Piper PA-36 · Firth, ID · Accident · 1 fatal · Field investigation · Final report · Aug 2, 1983 · N57588 · Destroyed
  > According to witnesses, the acft was overheard returning to the strip for a second load. Reportedly, it went into a steep bank at about 70 ft AGL & turned toward the strip. As the wings leveled, sounds of high eng power ceased & the acft descend to the…
- [NTSB SEA82DYA06](https://openairdocs.org/ntsb/SEA82DYA06.md): Rotorway Scorpion TOO · Jerome, ID · Accident · Serious injuries · Final report · Mar 25, 1982 · N222RP · Destroyed
  > The pilot was familiarizing himself with the home built helicopter. After hovering in one general area for about 45 minutes, he decided to hover to an open area by crossing a fence. He stated that he entered translational lift at about 20 knots while hovering…
- [NTSB SEA80DYA20](https://openairdocs.org/ntsb/SEA80DYA20.md): Weatherly 201B · Mountain Home, ID · Accident · No injuries · Closed · Jul 26, 1980 · N1293W · Substantial damage
- [NTSB SEA79DYA09](https://openairdocs.org/ntsb/SEA79DYA09.md): Maule M5210C · Hailey, ID · Accident · No injuries · Closed · Mar 12, 1979 · N348X · Substantial damage
- [NTSB SEA77DYA27](https://openairdocs.org/ntsb/SEA77DYA27.md): Hughes 269C · Gooding, ID · Accident · No injuries · Closed · Jul 5, 1977 · N7432F · Destroyed
- [NTSB SEA76DYA39](https://openairdocs.org/ntsb/SEA76DYA39.md): Hughes 269A · Gooding, ID · Accident · No injuries · Closed · Jul 10, 1976 · N7432F · Substantial damage
- [NTSB SEA67D0352](https://openairdocs.org/ntsb/SEA67D0352.md): Cessna 140 · Blackfoot, ID · Accident · No injuries · Closed · May 21, 1967 · N76775 · Substantial damage
- [NTSB SEA67D0031](https://openairdocs.org/ntsb/SEA67D0031.md): Luscombe 8A · Montpelier, ID · Accident · No injuries · Closed · Jul 10, 1966 · N20687 · Substantial damage

## 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."eventStateOrRegion" = 'ID' AND c."eventCountry" = 'USA'
  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&state=ID

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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.