# 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 12 of 41 · 2,048 cases

## Cases, newest first

- [NTSB CEN12CA442](https://openairdocs.org/ntsb/CEN12CA442.md): Doppelt Fredric F F. 8L Falco · Durango, CO · Accident · Minor injuries · Data collection · Final report · Jul 15, 2012 · N532FD · Substantial damage
  > The pilot's failure to maintain control of the airplane and the instructor's delayed remedial action.
- [NTSB WPR12CA304](https://openairdocs.org/ntsb/WPR12CA304.md): Schempp Hirth Nimbus II · Redmond, OR · Accident · No injuries · Data collection · Final report · Jul 13, 2012 · N96132 · Substantial damage
  > A loss of aerodynamic lift that resulted in a forced landing on unsuitable terrain.
- [NTSB CEN12LA452](https://openairdocs.org/ntsb/CEN12LA452.md): Mikoyan Gurevich MIG 21MF · Minneapolis, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2012 · N9307 · Substantial damage
  > The pilot's delayed application of wheel brakes to slow the airplane down on landing and the airplane’s failed drag chute, which resulted in a runway overrun.
- [NTSB ANC12CA070](https://openairdocs.org/ntsb/ANC12CA070.md): Dehavilland DHC-2 · Cantwell, AK · Accident · No injuries · Data collection · Final report · Jul 8, 2012 · N906JS · Substantial damage
  > The right seat passenger’s inadvertent contact with the emergency fuel shutoff valve, which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot's failure to provide a thorough preflight briefing to the…
- [NTSB CEN12CA409](https://openairdocs.org/ntsb/CEN12CA409.md): Wilkinson Lorin L Hatz XB-II · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Jul 1, 2012 · N500L · Substantial damage
  > The pilot's loss of directional control while landing with a crosswind.
- [NTSB CEN12CA403](https://openairdocs.org/ntsb/CEN12CA403.md): Ayres S2R-G10 · Minden, NE · Accident · No injuries · Data collection · Final report · Jun 28, 2012 · N3299Z · Substantial damage
  > The pilot’s failure to maintain clearance from the wake turbulence from a previous pass.
- [NTSB WPR12CA288](https://openairdocs.org/ntsb/WPR12CA288.md): Dg-Flugzeugbau DG-500MB · Richland, WA · Accident · Minor injuries · Data collection · Final report · Jun 24, 2012 · N505JL · Substantial damage
  > The failure of the spoilers to retract because the right wing spoiler’s lower plate became jammed, which resulted in the glider not having enough lift to make it to the runway surface.
- [NTSB ERA12LA411](https://openairdocs.org/ntsb/ERA12LA411.md): Universal Stinson 108 · Portland, ME · Accident · 1 fatal · Limited investigation · Final report · Jun 24, 2012 · N39443 · Substantial damage
  > A fatigue failure of the No. 3 piston skirt, which resulted in a total loss of engine power and the subsequent ditching in the ocean.
- [NTSB CEN12LA389](https://openairdocs.org/ntsb/CEN12LA389.md): Hoyle Fighter Escort Wings · Pueblo, CO · Accident · No injuries · Limited investigation · Final report · Jun 23, 2012 · N2051P · Substantial damage
  > An internal failure of one of the electrical system’s two batteries combined with the inadequate electrical system design, which resulted in a total loss of engine power.
- [NTSB CEN12LA374](https://openairdocs.org/ntsb/CEN12LA374.md): Yakovlev Yak-52 · Loveland, CO · Accident · No injuries · Limited investigation · Final report · Jun 14, 2012 · N76YK · Substantial damage
  > The pilot’s inadvertent closure of the pneumatic system valve, which resulted in the nose landing gear not fully extending before landing. Contributing to the accident was the pilot's reliance on the mechanical landing gear position indicators instead of the…
- [NTSB WPR12LA241](https://openairdocs.org/ntsb/WPR12LA241.md): Westcott Prowler Jaguar · Salinas, CA · Accident · 1 fatal · Limited investigation · Final report · Jun 1, 2012 · N125CW · Destroyed
  > The pilot's inability to maintain airplane control during takeoff due to an incapacitating cardiac event.
- [NTSB ERA12LA373](https://openairdocs.org/ntsb/ERA12LA373.md): Faltin John R Rotorway Exec 162F · Smoketown, PA · Accident · Minor injuries · Limited investigation · Final report · May 31, 2012 · N8707E · Substantial damage
  > A loss of control during a post-maintenance test flight due to improper tracking of the helicopter’s main rotor blades by the pilot/aircraft builder.
- [NTSB WPR12LA218](https://openairdocs.org/ntsb/WPR12LA218.md): Avia Stroitel AC-5M · Kingston, NV · Accident · 1 fatal · Limited investigation · Final report · May 19, 2012 · N186P · Substantial damage
  > The pilot's failure to maintain control of the glider while maneuvering in flight.
- [NTSB DCA12FA076](https://openairdocs.org/ntsb/DCA12FA076.md): Hawker Hawker Hunter MK.58A · Point Mugu, CA · Accident · 1 fatal · Field investigation · Final report · May 18, 2012 · N329AX · Destroyed
  > the pilot's decision to continue the flight with a known fuel imbalance condition that resulted in a loss of lateral control when the imbalance exceeded the known capabilities of the airplane. The fuel imbalance was due to incomplete refueling and an…
- [NTSB CEN12LA335](https://openairdocs.org/ntsb/CEN12LA335.md): Short Bros Shorts SD3-60 · Houston, TX · Accident · No injuries · Limited investigation · Final report · May 17, 2012 · N617FB · Substantial damage
  > The pilots’ improper decision to burn fuel during the taxi by operating the engines at a higher-than-normal power setting and using the wheel brakes to control taxi speed, which resulted in a wheel fire.
- [NTSB WPR12LA205](https://openairdocs.org/ntsb/WPR12LA205.md): Infinity 2000 · Hurricane, UT · Accident · Serious injuries · Limited investigation · Final report · May 11, 2012 · N541KP · Substantial damage
  > The pilot's decision to fly at a low altitude in a canyon, which resulted in insufficient altitude to recover from an encounter with terrain-induced turbulence.
- [NTSB CEN12FA290](https://openairdocs.org/ntsb/CEN12FA290.md): Cessna 401 · Chanute, KS · Accident · 4 fatal · Field investigation · Final report · May 11, 2012 · N9DM · Substantial damage
  > The malfunction of the cabin heater, which resulted in an inflight fire and smoke in the airplane. Contributing to the accident was the pilot’s lack of understanding concerning the status of the airplane's heater system following and earlier overheat event…
- [NTSB ERA12FA326](https://openairdocs.org/ntsb/ERA12FA326.md): Gutierrez Pablino Hummel Bird · DeFuniak Springs, FL · Accident · 1 fatal · Field investigation · Final report · May 9, 2012 · N9001N · Substantial damage
  > The pilot's failure to maintain airplane control due to the airplane’s exceedence of its maximum gross weight and center of gravity’s most rearward limit and his lack of familiarity with the airplane make and model, which resulted in an aerodynamic stall and…
- [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 CEN12CA263](https://openairdocs.org/ntsb/CEN12CA263.md): Campbell David Legacy · Durango, CO · Accident · No injuries · Data collection · Final report · May 1, 2012 · N12KX · Substantial damage
  > The pilot’s improper flare and subsequent aerodynamic stall, which resulted in a hard landing.
- [NTSB CEN12LA260](https://openairdocs.org/ntsb/CEN12LA260.md): Thrush S2R-H80 · Bryan, TX · Accident · No injuries · Limited investigation · Final report · Apr 25, 2012 · N510KW · Substantial damage
  > The pilot's diverted attention, which resulted in a loss of control while maneuvering the airplane at a low altitude.
- [NTSB CEN12LA259](https://openairdocs.org/ntsb/CEN12LA259.md): Moody-Siple A · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · Apr 21, 2012 · N78RB · Substantial damage
  > The pilot’s inadequate fuel monitoring, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB ANC12CA032](https://openairdocs.org/ntsb/ANC12CA032.md): Robinson Helicopter R22 Alpha · Palmer, AK · Accident · No injuries · Data collection · Final report · Apr 21, 2012 · N121MR · Substantial damage
  > The pilot's selection of unsuitable terrain for landing, which resulted in a tailrotor strike.
- [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 CEN12FA217](https://openairdocs.org/ntsb/CEN12FA217.md): Oliver Joseph Zodiac CH 601XL · Belmont, OH · Accident · 1 fatal · Field investigation · Final report · Mar 30, 2012 · N8060J · Substantial damage
  > The loss of engine power and the pilot’s diverted attention to the engine power loss, which resulted in a rapid descent and impact with terrain.
- [NTSB ANC12CA029](https://openairdocs.org/ntsb/ANC12CA029.md): Cessna 180 · Palmer, AK · Accident · No injuries · Data collection · Final report · Mar 30, 2012 · N266V · Substantial damage
  > The pilot’s failure to maintain adequate clearance from terrain during low-level maneuvering.
- [NTSB ERA12LA258](https://openairdocs.org/ntsb/ERA12LA258.md): Rotorcraft Developement OH-58C · McComb, MS · Accident · No injuries · Limited investigation · Final report · Mar 27, 2012 · N452MC · Substantial damage
  > A total loss of engine power due to oil starvation at the Nos. 5 and 8 engine bearings, which resulted in a catastrophic engine failure.
- [NTSB ERA12FA256](https://openairdocs.org/ntsb/ERA12FA256.md): Anderson John H Avid Flyer MK 4 · Waxhaw, NC · Accident · 1 fatal · Field investigation · Final report · Mar 26, 2012 · N61410 · Substantial damage
  > The pilot's failure to maintain adequate airspeed during an attempted go-around, which resulted in a low-altitude aerodynamic stall.
- [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 ERA12CA156](https://openairdocs.org/ntsb/ERA12CA156.md): Beech 58 · Walterboro, SC · Accident · No injuries · Data collection · Final report · Jan 24, 2012 · N358CC · Substantial damage
  > The pilot’s loss of directional control during the landing roll, which resulted in a runway excursion. Contributing to the accident was the sunglare.
- [NTSB ERA12FA120](https://openairdocs.org/ntsb/ERA12FA120.md): Cessna 441 · Nashville, PA · Accident · 1 fatal · Field investigation · Final report · Dec 22, 2011 · N48BS · Substantial damage
  > The pilot's failure to maintain minimum control airspeed after a loss of power to the right engine, which resulted in an uncontrollable roll into an inadvertent stall/spin. Contributing to the accident was the failure of the airplane's right engine for…
- [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 ERA12CA088](https://openairdocs.org/ntsb/ERA12CA088.md): Anatra Bart T Vans RV-7A · Quinton, VA · Accident · No injuries · Data collection · Final report · Nov 25, 2011 · N816BA · Substantial damage
  > The pilot's improper fuel management, which resulted in a total loss of engine power due to fuel starvation, and the subsequent nose-over during the forced landing.
- [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 CEN12IA050](https://openairdocs.org/ntsb/CEN12IA050.md): Nusbaum Vaquero · Hebron, IL · Incident · No injuries · Incident investigation · Final report · Nov 1, 2011 · N30CY · No damage
  > The pilot’s operation of the airplane with known medical conditions and his subsequent heart attack during the flight.
- [NTSB CEN12LA014](https://openairdocs.org/ntsb/CEN12LA014.md): Peck Zodiac 601XL · Traverse City, MI · Accident · Serious injuries · Limited investigation · Final report · Oct 11, 2011 · N4595P · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA12LA011](https://openairdocs.org/ntsb/ERA12LA011.md): Rivers William J KR-2 · Wytheville, VA · Accident · 1 fatal · Limited investigation · Final report · Oct 6, 2011 · N7026G · Substantial damage
  > The pilot's failure to maintain control, which resulted in an aerodynamic stall/spin. Contributing to the accident was the pilot's lack of experience in the airplane make and model.
- [NTSB CEN11CA679](https://openairdocs.org/ntsb/CEN11CA679.md): Waltman Theodore J Moose · Hays, KS · Accident · No injuries · Data collection · Final report · Sep 30, 2011 · N384JP · Substantial damage
  > Rudder flutter due to the design changes to the airplane's horizontal stabilizer.
- [NTSB CEN11CA667](https://openairdocs.org/ntsb/CEN11CA667.md): Tompkins Tandem Rocket · Lemars, IA · Accident · Minor injuries · Data collection · Final report · Sep 25, 2011 · N29RT · Substantial damage
  > The pilot's failure to maintain aircraft control while maneuvering.
- [NTSB WPR11MA454](https://openairdocs.org/ntsb/WPR11MA454.md): North American/Aero Classics P-51D · Reno, NV · Accident · 11 fatal · Class 1 · Major · Final report · Sep 16, 2011 · N79111 · Substantial damage
  > The reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate…
- [NTSB WPR11LA427](https://openairdocs.org/ntsb/WPR11LA427.md): Stinson V77 · Tillamook, OR · Accident · No injuries · Limited investigation · Final report · Sep 3, 2011 · N9112H · Substantial damage
  > The pilot’s loss of directional control while taxiing in a gusting tailwind.
- [NTSB ERA11FA468](https://openairdocs.org/ntsb/ERA11FA468.md): Mitchell David N Lancair IV P · Hammonton, NJ · Accident · 1 fatal · Field investigation · Final report · Aug 20, 2011 · N71DM · 2 aircraft · Substantial damage
  > The Lancair pilot's failure to see and avoid the aerobatic airplane. Contributing to the accident was the Lancair pilot's inadequate use of collision avoidance strategies while inbound to an area of known potential aerobatic activity.
- [NTSB CEN11LA596](https://openairdocs.org/ntsb/CEN11LA596.md): Suminski Walter M Jabiru SP · Columbia, IL · Accident · No injuries · Limited investigation · Final report · Aug 17, 2011 · N284E · Substantial damage
  > Separation of the right main wheel during landing rollout for undetermined reasons.
- [NTSB CEN11LA671](https://openairdocs.org/ntsb/CEN11LA671.md): Fisher Michael E Hyster · Lake Jackson, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 13, 2011 · N7167S · Substantial damage
  > The improper maintenance of the throttle control cable, which resulted in the engine going to idle power after takeoff.
- [NTSB WPR11CA399](https://openairdocs.org/ntsb/WPR11CA399.md): Richmond Jim R CCK-1865 · Dubois, WY · Accident · No injuries · Data collection · Final report · Aug 12, 2011 · N56WY · Substantial damage
  > The pilot's failure to maintain clearance from a wire during cruise flight.
- [NTSB CEN11LA566](https://openairdocs.org/ntsb/CEN11LA566.md): Air Tractor AT-400 · Nelson, NE · Accident · No injuries · Limited investigation · Final report · Aug 11, 2011 · N3659N · Substantial damage
  > Failure of the fuel control unit's spool cap bearing for reasons that could not be determined during extensive postaccident examination, and the pilot’s decision to shut the engine down without sufficient altitude and distance to reach the runway.
- [NTSB WPR11LA377](https://openairdocs.org/ntsb/WPR11LA377.md): Robinson Helicopter R22 Beta · Deer Park, WA · Accident · No injuries · Limited investigation · Final report · Aug 8, 2011 · N8332T · Substantial damage
  > The student pilot's failure to maintain control of the helicopter and his delay in relinquishing control to the flight instructor, which resulted in the instructor’s delayed remedial actions and subsequent hard landing.
- [NTSB CEN11LA541](https://openairdocs.org/ntsb/CEN11LA541.md): Weatherly 620B · Hettinger, ND · Accident · No injuries · Limited investigation · Final report · Jul 30, 2011 · N90181 · Substantial damage
  > Internal failure of the engine for undetermined reasons.
- [NTSB CEN11LA527](https://openairdocs.org/ntsb/CEN11LA527.md): Snow Quickie 2 · Ashtabula, OH · Accident · No injuries · Limited investigation · Final report · Jul 22, 2011 · N240JS · Substantial damage
  > The incorrect propeller pitch and lower-than-expected engine speed that did not allow the airplane to attain a proper climb rate during takeoff, and the subsequent hard landing that occurred when the pilot reduced power.

Next page: https://openairdocs.org/ntsb.md?engine=99999&page=13

## 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=12

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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.