# NTSB investigations: Amateur-built UNKNOWN ENG, AZ

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 2 · 96 cases

## Latest cases

- [NTSB WPR26LA331](https://openairdocs.org/ntsb/WPR26LA331.md): Filip Richard/Fakowee Avia Indus Thrp T211 SP E · Benson, AZ · Accident · Serious injuries · Class 4 · Limited · Investigation open · Sep 6, 2026 · N211RJ · Substantial damage
- [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 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.
- [NTSB WPR24LA162](https://openairdocs.org/ntsb/WPR24LA162.md): Nelson Lawrence K 601 HDS · Somerton, AZ · Accident · No injuries · Class 4 · Limited · Final report · May 27, 2024 · N918LN · Substantial damage
  > The pilot’s inadequate fuel management which resulted in a total loss of engine power due to fuel starvation.
- [NTSB WPR24LA159](https://openairdocs.org/ntsb/WPR24LA159.md): Nanchang China CJ-6A · Peoria, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 21, 2024 · N4182C · Substantial damage
  > The partial loss of engine power during cruise flight due to the improper installation of the master connecting rod main bushing set screws, which backed off and allowed the main bushing to shift, resulting in scoring damage on the crankshaft that led to the…
- [NTSB WPR24FA053](https://openairdocs.org/ntsb/WPR24FA053.md): Beauchamp Norm Kitfox · Eloy, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Dec 8, 2023 · N66180 · Destroyed
  > The separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects that prevented the propeller from achieving adequate grip…
- [NTSB WPR24LA015](https://openairdocs.org/ntsb/WPR24LA015.md): Boeing A75N1(PT17) · Mesa, AZ · Accident · No injuries · Class 4 · Limited · Final report · Oct 12, 2023 · N4777V · Substantial damage
  > The flight instructor’s failure to maintain directional control during the landing roll, which resulted in a ground loop.
- [NTSB WPR23LA132](https://openairdocs.org/ntsb/WPR23LA132.md): Fay David Velocity Elite · Bullhead City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Mar 17, 2023 · N2214W · Substantial damage
  > The student pilot’s improper landing during crosswind conditions and the flight instructor’s failure to take remedial action, which resulted in a loss of control.
- [NTSB WPR23LA064](https://openairdocs.org/ntsb/WPR23LA064.md): Arado-Flugzeugwerke FW190 A-5 · Casa Grande, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 9, 2022 · N190DK · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll.
- [NTSB WPR22LA318](https://openairdocs.org/ntsb/WPR22LA318.md): Leon E Everett Carbon CUB EX · Maricopa, AZ · Accident · No injuries · Class 4 · Limited · Final report · Aug 27, 2022 · N628LE · Substantial damage
  > The pilot's failure to maintain airplane control during landing with a crosswind and the use of excessive braking application, which resulted in a nose over.
- [NTSB WPR22LA108](https://openairdocs.org/ntsb/WPR22LA108.md): Kitfox S7 · Phoenix, AZ · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2022 · N1248 · Substantial damage
  > The pilot’s improper landing flare and subsequent failure to maintain directional control of the airplane during landing, which resulted in a runway excursion.
- [NTSB WPR22LA066](https://openairdocs.org/ntsb/WPR22LA066.md): Cameron Balloons U S A-315 · Phoenix, AZ · Accident · Serious injuries · Class 4 · Limited · Final report · Dec 20, 2021 · N317RR · No damage
  > The pilot’s inability to maintain balloon control during a high wind landing, which resulted in a serious passenger injury.
- [NTSB WPR22LA035](https://openairdocs.org/ntsb/WPR22LA035.md): Sonex Waiex B · Laveen Village, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 15, 2021 · N535D · Substantial damage
  > Failure of the rocker swivel assembly due to either wear or corrosion, which resulted in a loss of engine power.
- [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 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 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 GAA19CA483](https://openairdocs.org/ntsb/GAA19CA483.md): Schleicher ASW 24 · Paulden, AZ · Accident · Serious injuries · Data collection · Final report · Aug 4, 2019 · N37T · Substantial damage
  > The pilot's distraction due to the environment, his failure to lower the landing gear, and his subsequent failure to maintain directional control while landing the glider, which resulted in impact with a utility box.
- [NTSB WPR18LA030](https://openairdocs.org/ntsb/WPR18LA030.md): Vanderark RV-10 · Sun Lakes, AZ · Accident · No injuries · Limited investigation · Final report · Nov 12, 2017 · N917VA · Substantial damage
  > The fatigue fractures of the upper and lower alternator attachment bolts, which decreased the common drive belt tension and resulted in the subsequent in-flight separation of an alternator drive belt, the overheating of the engine, and the subsequent total…
- [NTSB WPR18LA006](https://openairdocs.org/ntsb/WPR18LA006.md): Nanchang China CJ 6 · Buckeye, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 9, 2017 · N8NW · Substantial damage
  > The failure of the fuel pump’s diaphragm which resulted in fuel system contamination from air and or oil and caused the engine to lose power.
- [NTSB WPR17LA141](https://openairdocs.org/ntsb/WPR17LA141.md): Vickers Supermaine Ltd · Marana, AZ · Accident · No injuries · Limited investigation · Final report · Jul 4, 2017 · N5TF · Substantial damage
  > The pilot’s failure to maintain directional control of the airplane during the landing roll.
- [NTSB WPR17LA121](https://openairdocs.org/ntsb/WPR17LA121.md): Bob Frederick Titan T-51 · Goodyear, AZ · Accident · No injuries · Limited investigation · Final report · Jun 4, 2017 · N51FB · Substantial damage
  > Failure of the propeller speed reduction gearbox input drive gear during the airplane’s initial climb for reasons that could not be determined due to extensive damage.
- [NTSB WPR16LA088](https://openairdocs.org/ntsb/WPR16LA088.md): Thomas D. Parkes Lancair ES · Prescott, AZ · Accident · No injuries · Limited investigation · Final report · Mar 10, 2016 · N44AZ · Substantial damage
  > A partial loss of engine power due to an over-temperature event, which thermally damaged the blade tips of the turbocharger wheel and resulted in a slowing or stoppage in the rotation of the turbocharger.
- [NTSB GAA15LA225](https://openairdocs.org/ntsb/GAA15LA225.md): Ultramagic N250 - NO Series · Peoria, AZ · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 2015 · N57EX · No damage
  > The pilot's failure to ensure that the passengers remained secure in the basket during deflation after landing, which resulted in a passenger falling out of the basket and sustaining a serious injury when a wind gust caught the envelope and tipped the basket…
- [NTSB WPR15LA131](https://openairdocs.org/ntsb/WPR15LA131.md): Mccurry Charles P F 1 Rocket · Sedona, AZ · Accident · Serious injuries · Limited investigation · Final report · Mar 21, 2015 · N747MC · Substantial damage
  > The partial loss of engine power during final approach for reasons that could not be determined during postaccident examination of the engine.
- [NTSB WPR15LA130](https://openairdocs.org/ntsb/WPR15LA130.md): Vans RV6A · Green Valley, AZ · Accident · Minor injuries · Limited investigation · Final report · Mar 21, 2015 · N811KM · Substantial damage
  > The total loss of engine power during initial climb due to the disconnection of both fuel pump power wires.
- [NTSB WPR15LA052](https://openairdocs.org/ntsb/WPR15LA052.md): Nanchang CJ-6 · Mesa, AZ · Accident · Minor injuries · Limited investigation · Final report · Dec 2, 2014 · N4350D · Substantial damage
  > The total loss of engine power during takeoff following a touch-and-go landing for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR14LA242](https://openairdocs.org/ntsb/WPR14LA242.md): Adams Dragonfly · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Jun 12, 2014 · N85TL · Substantial damage
  > A partial loss of engine power due to a reduction in the No. 3 cylinder’s compression as a result of the exhaust valve not having consistent uniform contact with the cylinder head valve seat.
- [NTSB WPR13LA134](https://openairdocs.org/ntsb/WPR13LA134.md): Blumer Challenger II Spec · Peoria, AZ · Accident · No injuries · Limited investigation · Final report · Feb 26, 2013 · N107BW · Substantial damage
  > A cracked cooling fan housing, which led to a malfunction of the ignition system and a loss of engine power during the landing approach.
- [NTSB WPR13LA099](https://openairdocs.org/ntsb/WPR13LA099.md): Goetz Helicycle · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Jan 22, 2013 · N143PG · Substantial damage
  > The pilot's failure to properly install and secure the wire connecting the electronic speed controller unit to the fuel controller actuator motor, which resulted in the wire’s disconnection in flight and the resultant partial loss of engine power.
- [NTSB WPR12CA150](https://openairdocs.org/ntsb/WPR12CA150.md): Arado-Flugzeugwerke FW190 A-5 · Casa Grande, AZ · Accident · No injuries · Data collection · Final report · Mar 30, 2012 · N190DK · Substantial damage
  > The pilot did not maintain directional control of the airplane during the landing roll.
- [NTSB WPR12FA059](https://openairdocs.org/ntsb/WPR12FA059.md): Vans RV7 - A · Surprise, AZ · Accident · 1 fatal · Field investigation · Final report · Dec 10, 2011 · N724WD · Substantial damage
  > An electrical or engine electronic problem, which resulted in a loss of engine power, followed by a low-altitude stall.
- [NTSB WPR12CA033](https://openairdocs.org/ntsb/WPR12CA033.md): Casler Scott CX-4 · San Carlos, AZ · Accident · No injuries · Data collection · Final report · Nov 9, 2011 · N5089Q · Substantial damage
  > The pilot's inadequate directional control during takeoff.
- [NTSB WPR11FA258](https://openairdocs.org/ntsb/WPR11FA258.md): Bowley Murphy · Aguila, AZ · Accident · No injuries · Field investigation · Final report · Jun 12, 2011 · N189SB · Substantial damage
  > A fire that originated from a fuel leak at an undetermined location in the engine compartment. Contributing to the accident was the builder's use of non-aviation hardware for engine fluid fittings and lines.
- [NTSB WPR11CA208](https://openairdocs.org/ntsb/WPR11CA208.md): Doktor Fiberglas H101 Salto · Peoria, AZ · Accident · No injuries · Data collection · Final report · Apr 24, 2011 · N110AZ · Substantial damage
  > The glider's encounter with turbulence and loss of lift, which resulted in a ditching in a lake.
- [NTSB WPR11CA124](https://openairdocs.org/ntsb/WPR11CA124.md): Cessna 182D · Quartzsite, AZ · Accident · No injuries · Data collection · Final report · Feb 6, 2011 · N8859X · Substantial damage
  > The pilot's inadequate compensation for the wind and subsequent loss of directional control, which resulted in a runway excursion and collision with a parked aircraft.
- [NTSB WPR11LA080](https://openairdocs.org/ntsb/WPR11LA080.md): Schaefer Kitfox 4 · Glendale, AZ · Accident · Serious injuries · Limited investigation · Final report · Dec 23, 2010 · N95FT · Substantial damage
  > The pilot's failure to recognize the onset of and to prevent an aerodynamic stall at low altitude. Contributing to the accident were the manufacturer’s conflicting guidance about the power setting for takeoff and the pilot’s decision to conduct a…
- [NTSB WPR10LA317](https://openairdocs.org/ntsb/WPR10LA317.md): Worgull Hornet · Camp Verde, AZ · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2010 · N707BD · Substantial damage
  > The in-flight separation of the exhaust clamps for an undetermined reason, which resulted in the exhaust system striking the wooden propeller.
- [NTSB WPR10LA130](https://openairdocs.org/ntsb/WPR10LA130.md): Nanchang China CJ-6A · Mesa, AZ · Accident · Minor injuries · Limited investigation · Final report · Feb 7, 2010 · N6263D · Substantial damage
  > Separation of the cylinder from the engine during cruise flight due to fatigue in the studs attaching it to the engine casing.
- [NTSB WPR10LA039](https://openairdocs.org/ntsb/WPR10LA039.md): Sauer KR-2S · Glendale, AZ · Accident · Minor injuries · Limited investigation · Final report · Oct 30, 2009 · N811RJ · Substantial damage
  > A loss of engine power due to fuel starvation as a result of a reduced fuel flow to the engine resulting from a misrouted fuel tank vent line, during initial climb.
- [NTSB WPR09LA308](https://openairdocs.org/ntsb/WPR09LA308.md): Mayo RV-6A · Cottonwood, AZ · Accident · 2 fatal · Limited investigation · Final report · Jun 23, 2009 · N413RV · Substantial damage
  > The partial loss of engine power for undetermined reasons, and the pilot's failure to maintain an adequate airspeed, which resulted in an inadvertent stall/spin.
- [NTSB WPR09LA263](https://openairdocs.org/ntsb/WPR09LA263.md): Lanham Lancair IV · Seligman, AZ · Accident · 2 fatal · Limited investigation · Final report · May 23, 2009 · N144L · Substantial damage
  > The pilot's loss of airplane control during en route descent while operating in known icing conditions.
- [NTSB WPR09CA198](https://openairdocs.org/ntsb/WPR09CA198.md): Better Burn LLC/Startube Div Exec 162F · Chandler, AZ · Accident · Minor injuries · Data collection · Final report · Apr 16, 2009 · N333ST · Substantial damage
  > The flight instructor's inadequate supervision of the flight and delay in taking remedial action to prevent the helicopter from touching down while drifting. Contributing to the accident was the design of the skid shoes.
- [NTSB LAX08FA122](https://openairdocs.org/ntsb/LAX08FA122.md): Carlton M. Cadwell Lancair IV-P · Mesa, AZ · Accident · 3 fatal · Field investigation · Final report · Apr 23, 2008 · N25CL · Destroyed
  > The pilot's failure to maintain an adequate airspeed during climb out resulting in an aerodynamic stall/spin.
- [NTSB LAX08LA078](https://openairdocs.org/ntsb/LAX08LA078.md): Jenkins RV-7A · Winslow, AZ · Accident · 1 fatal · Limited investigation · Final report · Mar 18, 2008 · N742MJ · Substantial damage
  > The pilot's failure to maintain an adequate airspeed that resulted in a stall/spin.
- [NTSB LAX08CA033](https://openairdocs.org/ntsb/LAX08CA033.md): Senft/Anderson/salmon C-5 · Tucson, AZ · Accident · Minor injuries · Data collection · Final report · Dec 6, 2007 · N700H · Substantial damage
  > a total loss of engine power due to the failure of the number 3 articulating rod.
- [NTSB LAX07CA205](https://openairdocs.org/ntsb/LAX07CA205.md): Saunders Stiletto · Quartzsite, AZ · Accident · Minor injuries · Data collection · Final report · Jul 5, 2007 · N337DS · Substantial damage
  > Fuel exhaustion due to the pilot's inadequate preflight inspection during which he failed to insure security of the fuel tank's cap.
- [NTSB LAX07LA197](https://openairdocs.org/ntsb/LAX07LA197.md): Evenson Roger J Vans RV-9A · Tucson, AZ · Accident · Minor injuries · Limited investigation · Final report · Jun 29, 2007 · N394RS · Substantial damage
  > the loss of engine power during takeoff-initial climb, which resulted from the owner/builder's improper adjustment of the supercharger waste gate valve, that resulted in the failure of the waste gate servo motor.
- [NTSB LAX06LA270](https://openairdocs.org/ntsb/LAX06LA270.md): Burkhart Grob Flugzeugbau G109 · Glendale, AZ · Accident · No injuries · Limited investigation · Final report · Aug 18, 2006 · N39262 · Substantial damage
  > The failure and separation of one propeller blade for undetermined reasons.
- [NTSB LAX06LA185](https://openairdocs.org/ntsb/LAX06LA185.md): Diamond Aircraft Industries HK 36 TTC · Payson, AZ · Accident · No injuries · Limited investigation · Final report · May 29, 2006 · N637TT · Substantial damage
  > partial loss of engine power for undetermined reasons.
- [NTSB LAX06CA037](https://openairdocs.org/ntsb/LAX06CA037.md): Hopkins Rutan VariViggen · Aguila, AZ · Accident · Serious injuries · Data collection · Final report · Nov 16, 2005 · N389VV · Substantial damage
  > the pilot's failure to maintain an adequate airspeed during landing approach, which resulted in an inadvertent stall. A contributing factor was the pilot's lack of experience in the accident airplane.

Next page: https://openairdocs.org/ntsb.md?engine=99999&state=AZ&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."eventStateOrRegion" = 'AZ' 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=AZ

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