# NTSB investigations: Amateur-built UNKNOWN ENG, 2011

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 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.
- [NTSB CEN11LA499](https://openairdocs.org/ntsb/CEN11LA499.md): Air Tractor AT-502 · Fergus Falls, MN · Accident · No injuries · Limited investigation · Final report · Jul 22, 2011 · N1516G · Substantial damage
  > The total loss of engine power for reasons that could not be determined because the airplane came to rest inverted in water.
- [NTSB CEN11FA469](https://openairdocs.org/ntsb/CEN11FA469.md): Bowie Richard Sonerai II · Dudley, MO · Accident · 1 fatal · Field investigation · Final report · Jul 9, 2011 · N113RB · Substantial damage
  > Fuel starvation due to the pilot’s improper fuel management and his decision to conduct the flight while under the influence of marijuana.
- [NTSB ANC11LA060](https://openairdocs.org/ntsb/ANC11LA060.md): Sonex / John D. McCarter Waiex · Sterling, AK · Accident · Serious injuries · Limited investigation · Final report · Jul 7, 2011 · N18YX · Substantial damage
  > The pilot's failure to maintain sufficient airspeed to avoid an aerodynamic stall following a loss of engine power for undetermined reasons.
- [NTSB CEN11FA443](https://openairdocs.org/ntsb/CEN11FA443.md): Koen Lancair Laser IV-P · Port O'Connor, TX · Accident · 2 fatal · Field investigation · Final report · Jul 3, 2011 · N11001 · Substantial damage
  > The pilot’s loss of airplane control for reasons that could not be determined from the available information.
- [NTSB ERA11FA374](https://openairdocs.org/ntsb/ERA11FA374.md): Binkley Richard Sonex · Calhoun, GA · Accident · 1 fatal · Field investigation · Final report · Jul 2, 2011 · N6PX · Substantial damage
  > The total loss of engine power for reasons that could not be determined because postimpact fire damage precluded a thorough examination of the engine.
- [NTSB CEN11LA449](https://openairdocs.org/ntsb/CEN11LA449.md): Abbey Victor RV9-A · Leander, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 2011 · N59VA · Substantial damage
  > The partial loss of engine power for reasons that could not be determined because examination of the engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN11FA431](https://openairdocs.org/ntsb/CEN11FA431.md): Bosonetto Thorp T-18 · Howell, MI · Accident · 2 fatal · Field investigation · Final report · Jun 29, 2011 · N8AL · Substantial damage
  > The pilot's failure to maintain airplane control and airspeed during final approach, which resulted in an aerodynamic stall/spin at a low altitude.
- [NTSB WPR11LA290](https://openairdocs.org/ntsb/WPR11LA290.md): Christen Industries Pitts S-1T · Alkali Lake, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 2011 · N77MN · Substantial damage
  > The loss of engine oil during cruise flight due to the failure of the front bearing oil seal.
- [NTSB WPR11CA281](https://openairdocs.org/ntsb/WPR11CA281.md): Piper PA-36-285 · Havre, MT · Accident · No injuries · Data collection · Final report · Jun 23, 2011 · N57736 · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB WPR11LA280](https://openairdocs.org/ntsb/WPR11LA280.md): Inhofe/ Davis Vans RV-8 · Sheridan, WY · Accident · No injuries · Limited investigation · Final report · Jun 22, 2011 · N4546Y · Substantial damage
  > The pilot's inadequate directional control during the landing roll.
- [NTSB ERA11CA355](https://openairdocs.org/ntsb/ERA11CA355.md): Dotson William P Sngl Seat Hawk Arrow · Carthage, NC · Accident · No injuries · Data collection · Final report · Jun 20, 2011 · N4209F · Substantial damage
  > A partial loss of engine power due to the pilot’s improper installation of the engine’s No. 1 cylinder spark plugs.
- [NTSB CEN11LA402](https://openairdocs.org/ntsb/CEN11LA402.md): Cessna P210R · Albia, IA · Accident · Serious injuries · Limited investigation · Final report · Jun 18, 2011 · N900SR · Substantial damage
  > The pilot's inadequate preflight inspection, in which he did not detect that less fuel was on board the airplane than planned, which precipitated a loss of engine power due to fuel exhaustion during initial descent.
- [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 ERA11CA311](https://openairdocs.org/ntsb/ERA11CA311.md): Southern Airmotive SAC · Taccoa, GA · Accident · No injuries · Data collection · Final report · May 17, 2011 · N1150 · Substantial damage
  > The pilot's inadequate compensation for crosswind conditions during landing, resulting in a runway excursion and collision with a hangar.
- [NTSB CEN11CA314](https://openairdocs.org/ntsb/CEN11CA314.md): Prichard Kevin Legacy 2K · Kansas City, MO · Accident · No injuries · Data collection · Final report · May 2, 2011 · N50KP · Substantial damage
  > The pilot's misjudgment of the landing area, which resulted in the airplane touching down on a grass area adjacent to the runway and between parallel taxiways.
- [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 WPR11CA206](https://openairdocs.org/ntsb/WPR11CA206.md): Tew William P Team Rocket F1 · Heber, UT · Accident · No injuries · Data collection · Final report · Apr 23, 2011 · N5491W · Substantial damage
  > The pilot's failure to maintain directional control during landing.
- [NTSB WPR11LA199](https://openairdocs.org/ntsb/WPR11LA199.md): Zenith CH-750 · Winchester, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 14, 2011 · N632DR · Substantial damage
  > A total loss of engine power during descent for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
- [NTSB ERA11LA234](https://openairdocs.org/ntsb/ERA11LA234.md): Let L 33 Solo · New Castle, VA · Accident · 1 fatal · Limited investigation · Final report · Apr 10, 2011 · N286BA · Substantial damage
  > Pilot incapacitation shortly after takeoff for unknown reasons.
- [NTSB WPR11LA190](https://openairdocs.org/ntsb/WPR11LA190.md): Bell 47G · Torrance, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 6, 2011 · N9FK · Substantial damage
  > The pilot did not maintain adequate altitude during takeoff, which resulted in ground contact and a dynamic rollover.
- [NTSB ERA11FA222](https://openairdocs.org/ntsb/ERA11FA222.md): Replogle Lancair 360 · Chesapeake, VA · Accident · 2 fatal · Field investigation · Final report · Apr 3, 2011 · N164T · Substantial damage
  > The pilot did not maintain airspeed following a loss of engine power, which resulted in an aerodynamic stall and spin. Contributing to the accident was the pilot's selection of the wrong fuel tank at takeoff, which resulted in fuel starvation and the total…
- [NTSB ERA11LA213](https://openairdocs.org/ntsb/ERA11LA213.md): Holst Lawrence E VP-1 · Calhoun, GA · Accident · Minor injuries · Limited investigation · Final report · Mar 25, 2011 · N770VP · Substantial damage
  > A partial loss of engine power during initial climb due to an over-lean carburetor setting. Contributing to the accident was the pilot's improper adjustment of the engine's carburetor during construction.
- [NTSB ERA11LA200](https://openairdocs.org/ntsb/ERA11LA200.md): Piper PA-18A 150 · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Mar 19, 2011 · N9692D · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR11FA147](https://openairdocs.org/ntsb/WPR11FA147.md): Neefjes Lancair 360 MK-II · Milford, UT · Accident · 1 fatal · Field investigation · Final report · Feb 27, 2011 · N989TT · Substantial damage
  > The pilot's loss of control of the airplane due to spatial disorientation after inadvertently entering instrument meteorological conditions. Contributing to the accident were the pilot's inadequate preflight preparation, his en route decision-making, and his…
- [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.

## 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 year(c."eventDate") = 2011
  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&year=2011

---
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.