# 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 10 of 41 · 2,048 cases

## Cases, newest first

- [NTSB CEN14CA514](https://openairdocs.org/ntsb/CEN14CA514.md): Stanley Arthur Freeman Zodiac 601XL · Fremont, NE · Accident · No injuries · Data collection · Final report · Sep 14, 2014 · N710DM · Substantial damage
  > The pilot's improper landing flare which resulted in a hard landing.
- [NTSB WPR14FA369](https://openairdocs.org/ntsb/WPR14FA369.md): Backovich George C G P 5 · Reno, NV · Accident · 1 fatal · Field investigation · Final report · Sep 8, 2014 · N501GP · Destroyed
  > The failure of the right wing under normal race loads due to an improper repair of the right wing spar that reduced its structural strength following a previous landing accident.
- [NTSB ERA14FA421](https://openairdocs.org/ntsb/ERA14FA421.md): Klaas Development Lancair IV P · Ooltewah, TN · Accident · 1 fatal · Field investigation · Final report · Sep 3, 2014 · N541EM · Substantial damage
  > The inadequate torque of the propeller mounting bolts and inspection of the propeller, which resulted in the fatigue fracture of the bolts and a subsequent in-flight separation of the propeller assembly.
- [NTSB ERA14LA418](https://openairdocs.org/ntsb/ERA14LA418.md): Lorenz Stephen Kitfox Series 5 · Greene, NY · Accident · Serious injuries · Limited investigation · Final report · Sep 1, 2014 · N94SL · Destroyed
  > The pilot’s failure to attain adequate airspeed during the initial climb, which resulted in an exceedance of the wing’s critical angle-of-attack and a subsequent aerodynamic stall. Contributing to the accident was the pilot’s lack of experience in the…
- [NTSB WPR14LA340](https://openairdocs.org/ntsb/WPR14LA340.md): Hughes 269C · Darrington, WA · Accident · No injuries · Limited investigation · Final report · Aug 11, 2014 · N7432F · Substantial damage
  > Maintenance personnel’s failure to secure the throttle mount bracket during a recent engine installation, which resulted in the loss of throttle movement and an inability to control engine power.
- [NTSB CEN14FA400](https://openairdocs.org/ntsb/CEN14FA400.md): Larry Ketterling FEW P-51 Mustang · Lisbon, ND · Accident · 1 fatal · Field investigation · Final report · Aug 1, 2014 · N116LK · Destroyed
  > The partial loss of engine power for a reason that could not be determined because of extensive impact and postcrash fire damage, and the pilot's failure to maintain adequate airspeed, which resulted in the airplane's wing exceeding its critical…
- [NTSB WPR14LA312](https://openairdocs.org/ntsb/WPR14LA312.md): Roscher Frederick Thunder Mustang · Spanish Springs, NV · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 2014 · N695HR · Destroyed
  > A complete loss of engine power during climb for reasons that could not be determined due to the severity of postcrash fire damage to the airplane.
- [NTSB ERA14LA358](https://openairdocs.org/ntsb/ERA14LA358.md): Winder Robert S VP1 · Grove City, PA · Accident · Serious injuries · Limited investigation · Final report · Jul 25, 2014 · N3831W · Substantial damage
  > A collision with terrain during the landing approach for reasons that could not be determined based on available information.
- [NTSB ERA14LA351](https://openairdocs.org/ntsb/ERA14LA351.md): Siler Ronald E Ultrastar · Halifax, PA · Accident · Serious injuries · Limited investigation · Final report · Jul 23, 2014 · N4425W · Substantial damage
  > A total loss of engine power for reasons that could not be determined because the engine was not recovered. Contributing to the accident was the pilot's failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle-of-attack during…
- [NTSB ERA14CA353](https://openairdocs.org/ntsb/ERA14CA353.md): Jannakos Gregory P Zodiac 601 HDS · Lawrenceville, GA · Accident · No injuries · Data collection · Final report · Jul 23, 2014 · N4399 · Substantial damage
  > The pilot's inadequate flare, which resulted in a hard landing.
- [NTSB CEN14CA386](https://openairdocs.org/ntsb/CEN14CA386.md): Black Christopher Sparrow Sport Spec · Moriarty, NM · Accident · No injuries · Data collection · Final report · Jul 20, 2014 · N41475 · Substantial damage
  > The pilot's loss of directional control while landing in gusty crosswind conditions. Contributing to the accident was the pilot's operation of the engine above its normal temperature limit on takeoff.
- [NTSB CEN14CA382](https://openairdocs.org/ntsb/CEN14CA382.md): Gremminger Greg Magni M 16 · Cape Girardeau, MO · Accident · Serious injuries · Data collection · Final report · Jul 17, 2014 · N216MG · Substantial damage
  > The pilot's failure to maintain sufficient altitude while maneuvering which led to a collision with power lines.
- [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 WPR14CA292](https://openairdocs.org/ntsb/WPR14CA292.md): Jonker Sailplanes JS1-C · Truckee, CA · Accident · Serious injuries · Data collection · Final report · Jul 14, 2014 · N501WG · Substantial damage
  > The pilot's failure to maintain aircraft control in gusting wind conditions while on final approach to the runway.
- [NTSB CEN14CA380](https://openairdocs.org/ntsb/CEN14CA380.md): Dantonio 404 · Wichita Falls, TX · Accident · No injuries · Data collection · Final report · Jul 14, 2014 · N482FD · Substantial damage
  > The separation of a spark plug wire resulting in a loss of engine power during climb out and a subsequent forced landing on a field containing trees.
- [NTSB CEN14LA372](https://openairdocs.org/ntsb/CEN14LA372.md): Jonker Sailplanes JS1-C · Wallis, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 13, 2014 · N60XJ · Substantial damage
  > The pilot’s loss of glider control and its subsequent impact with terrain for reasons that could not be determined due to a lack of available information.
- [NTSB ERA14CA349](https://openairdocs.org/ntsb/ERA14CA349.md): Pekola James W Ridge Runner III · Andrews, NC · Accident · No injuries · Data collection · Final report · Jul 10, 2014 · N39ZT · Substantial damage
  > The pilot's failure to open the fuel tank valves during the preflight examination of the airplane, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB ERA14LA309](https://openairdocs.org/ntsb/ERA14LA309.md): Simmons William E Aventura 2 · Rockledge, FL · Accident · Minor injuries · Limited investigation · Final report · Jun 20, 2014 · N700WS · Substantial damage
  > The pilot’s failure to maintain airspeed during a forced landing following a loss of engine power, which resulted in a hard landing. Contributing to the accident was the pilot’s inadequate inspection of the engine, which resulted in a loose ground wire lug on…
- [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 WPR14LA237](https://openairdocs.org/ntsb/WPR14LA237.md): Craig W Sherman Super Glasair TT · Madera, CA · Accident · No injuries · Limited investigation · Final report · Jun 8, 2014 · N400MC · Substantial damage
  > The loosening of a B-nut in the fuel system which resulted in a rapid, undetected fuel leak and subsequent fuel exhaustion.
- [NTSB WPR14LA225](https://openairdocs.org/ntsb/WPR14LA225.md): Emery Mark Rotorway 162F · Merced, CA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2014 · N78291 · Destroyed
  > The helicopter pilot/owner's decision to install a belt type not recommended by the kit manufacturer in the tail rotor drive system using the incorrect tension values, which led to the belt’s in-flight failure and the subsequent loss of tail rotor drive…
- [NTSB WPR14LA222](https://openairdocs.org/ntsb/WPR14LA222.md): Phillips BD 4 · Dayton, NV · Accident · 1 fatal · Limited investigation · Final report · Jun 3, 2014 · N11DV · Destroyed
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle-of-attack during the turn onto the final base leg in gusting wind conditions, which resulted in a stall/spin at too low an altitude to allow recovery.
- [NTSB CEN14LA244](https://openairdocs.org/ntsb/CEN14LA244.md): Crawford Preceptor Ultra PUP · Mabel, MN · Accident · Minor injuries · Limited investigation · Final report · May 17, 2014 · N1171Q · Substantial damage
  > The loss of engine power as a result of carburetor icing.
- [NTSB CEN14LA243](https://openairdocs.org/ntsb/CEN14LA243.md): Hoffius Stowe Challenger II · Attica, IN · Accident · 1 fatal · Limited investigation · Final report · May 10, 2014 · N824SH · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle-of-attack while maneuvering at low altitude, which led to an aerodynamic stall and loss of control. Contributing to the accident was the installation of an…
- [NTSB CEN14LA213](https://openairdocs.org/ntsb/CEN14LA213.md): Crow Mustang II · Morton, TX · Accident · Serious injuries · Limited investigation · Final report · Apr 22, 2014 · N48MK · Substantial damage
  > The pilot's improper landing flare after encountering a gusting crosswind and his inadequate recovery from the subsequent bounced landing.
- [NTSB CEN14LA202](https://openairdocs.org/ntsb/CEN14LA202.md): Nanchang CJ6 - A · Flushing, MI · Accident · 2 fatal · Limited investigation · Final report · Apr 19, 2014 · N594T · Substantial damage
  > The pilot’s failure to maintain adequate airspeed during an off-airport forced landing after a loss of engine power due to carburetor icing and his exceedance of the airplane’s critical angle-of-attack, which resulted in an aerodynamic stall. Contributing to…
- [NTSB ERA14CA189](https://openairdocs.org/ntsb/ERA14CA189.md): Moore Thomas O Zenith Stol CH701 · Frostproof, FL · Accident · No injuries · Data collection · Final report · Apr 8, 2014 · N12369 · Substantial damage
  > The pilot's failure to maintain directional control during a precautionary landing. Contributing to the accident was the pilot's delayed decision to divert due to deteriorating weather.
- [NTSB WPR14LA133](https://openairdocs.org/ntsb/WPR14LA133.md): Peter W Stevens Bearhawk Patrol · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Mar 8, 2014 · N123WW · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll.
- [NTSB CEN14CA156](https://openairdocs.org/ntsb/CEN14CA156.md): Olson Kenneth H T Zodiac 601 HDS · Garrison, MN · Accident · No injuries · Data collection · Final report · Mar 8, 2014 · N981HT · Substantial damage
  > The pilot's failure to maintain directional control during takeoff which resulted in the airplane striking a snow bank.
- [NTSB ERA14LA130](https://openairdocs.org/ntsb/ERA14LA130.md): Victor M Cordero RV-9A · Apopka, FL · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 2014 · N19VC · Substantial damage
  > The failure of the propeller spline shaft, the drive disk adapter, and the propeller speed reduction unit (PSRU) input spline due to a lack of inspection and lubrication, which resulted in a total loss of propeller drive and a subsequent forced landing.…
- [NTSB ERA14MA060](https://openairdocs.org/ntsb/ERA14MA060.md): Fairchild SA227-AC · La Alianza, PR · Accident · 2 fatal · Major investigation · Final report · Dec 3, 2013 · N831BC · Destroyed
  > The flight crew's excessive elevator input during a rapid descent under night lighting conditions, which resulted in the overstress and breakup of the airplane. Contributing to the accident was an initial loss of airplane control for reasons that could not be…
- [NTSB CEN14LA056](https://openairdocs.org/ntsb/CEN14LA056.md): Pearson Jon M Dragonfly · Anahuac, TX · Accident · 1 fatal · Limited investigation · Final report · Nov 16, 2013 · N975DF · Destroyed
  > The incorrect installation by the pilot, who was not a certificated mechanic or repairman, of the main rotor head bearing block, which resulted in the in-flight separation of the rotor head.
- [NTSB CEN14FA046](https://openairdocs.org/ntsb/CEN14FA046.md): Mitsubishi MU 2B-25 · Owasso, OK · Accident · 1 fatal · Field investigation · Final report · Nov 10, 2013 · N856JT · Destroyed
  > The pilot's loss of airplane control during a known one-engine-inoperative condition. The reasons for the loss of control and engine shutdown could not be determined because the airplane was not equipped with a crash-resistant recorder and postaccident…
- [NTSB WPR14LA040](https://openairdocs.org/ntsb/WPR14LA040.md): Mikoyan Gurevich MIG 21 UM · Reno, NV · Accident · Serious injuries · Limited investigation · Final report · Nov 1, 2013 · N20739 · Substantial damage
  > The loss of brake control due to the fracture of the front brake pawl engagement spring, which resulted in a runway overrun.
- [NTSB WPR14CA039](https://openairdocs.org/ntsb/WPR14CA039.md): Yuneec Yuneec · Upland, CA · Accident · No injuries · Data collection · Final report · Nov 1, 2013 · N400XW · Substantial damage
  > The pilot's improper flare, which resulted in a loss of aircraft control and hard landing.
- [NTSB ERA14LA034](https://openairdocs.org/ntsb/ERA14LA034.md): Teal Harry H Sonerai II Stretch · De Leon Springs, FL · Accident · Minor injuries · Limited investigation · Final report · Nov 1, 2013 · N1927B · Substantial damage
  > A total loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine revealed no evidence of preexisting mechanical anomalies or failures that would have precluded normal operation.
- [NTSB ERA14CA017](https://openairdocs.org/ntsb/ERA14CA017.md): Beech A36 · Burnsville, NC · Accident · Serious injuries · Data collection · Final report · Oct 23, 2013 · N7257W · Substantial damage
  > The pilot's failure to achieve a proper touchdown point during landing, which resulted in a runway excursion.
- [NTSB WPR14CA022](https://openairdocs.org/ntsb/WPR14CA022.md): Collins Zenith Stol CH 701 · Deer Park, WA · Accident · No injuries · Data collection · Final report · Oct 19, 2013 · N2849C · Substantial damage
  > The pilot's inadequate flare and failure to maintain control of the airplane during the landing with a tailwind.
- [NTSB CEN14LA021](https://openairdocs.org/ntsb/CEN14LA021.md): Pohoski RV 4 · New Waverly, TX · Accident · No injuries · Limited investigation · Final report · Oct 19, 2013 · N10XP · Destroyed
  > An in-flight fire for reasons that could not be determined because the wreckage was consumed by fire.
- [NTSB ERA14LA018](https://openairdocs.org/ntsb/ERA14LA018.md): Fuller Van L Sonex · Palatine, NY · Accident · No injuries · Limited investigation · Final report · Oct 16, 2013 · N68VF · Substantial damage
  > A total loss of engine power for reasons that could not be determined because a test run and partial teardown of the engine did not reveal any anomalies.
- [NTSB CEN14LA003](https://openairdocs.org/ntsb/CEN14LA003.md): Kenneth M Franz Ultra PUP · Belleville, TX · Accident · Serious injuries · Limited investigation · Final report · Oct 7, 2013 · N106KF · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane's critical angle-of-attack while turning back to the airport instead of landing straight ahead following a partial loss of engine power, which resulted in an aerodynamic…
- [NTSB ANC14CA001](https://openairdocs.org/ntsb/ANC14CA001.md): Piper PA 18-150 · Iliamna, AK · Accident · No injuries · Data collection · Final report · Oct 7, 2013 · N91144 · Substantial damage
  > The pilot's failure to maintain aircraft control during the landing roll with a tailwind.
- [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 WPR13FA405](https://openairdocs.org/ntsb/WPR13FA405.md): Kamtz RV-7A · Jackson Hole, WY · Accident · 2 fatal · Field investigation · Final report · Sep 11, 2013 · N820RV · Substantial damage
  > A loss of engine power for reasons that could not be determined because postaccident examination revealed no mechanical malfunctions or failures that would have precluded normal operation. Also causal was the pilot’s failure to adequately compensate for the…
- [NTSB WPR13FA393](https://openairdocs.org/ntsb/WPR13FA393.md): Stuart Vortex · Scappoose, OR · Accident · 1 fatal · Field investigation · Final report · Aug 31, 2013 · N43259 · Destroyed
  > The student pilot's unintentional takeoff followed by his failure to maintain control of the gyroplane during the landing approach. Contributing to the accident was the student pilot’s lack of both flight training and flight experience and his lack of a solo…
- [NTSB CEN13FA509](https://openairdocs.org/ntsb/CEN13FA509.md): Cessna 421C · Paris, IL · Accident · 1 fatal · Field investigation · Final report · Aug 27, 2013 · N229H · Destroyed
  > The pilot's failure to abort the takeoff during the ground roll after detecting the airplane's degraded performance. Contributing to the accident was the pilot's decision to attempt a flight with a known problem with the left engine and the likely partial…
- [NTSB CEN13LA502](https://openairdocs.org/ntsb/CEN13LA502.md): Anderas Tiger Moth R80 · New Franken, WI · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 2013 · N927TM · Substantial damage
  > The loss of engine power during initial climb for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN13LA488](https://openairdocs.org/ntsb/CEN13LA488.md): Griffith E/Boyd W E Lancair 360 · Nucla, CO · Accident · No injuries · Limited investigation · Final report · Aug 12, 2013 · N15EG · Substantial damage
  > The pilot’s failure to extend the airplane’s landing gear before landing.
- [NTSB CEN13LA484](https://openairdocs.org/ntsb/CEN13LA484.md): Rockwell International S-2R · Larchwood, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2013 · N5610X · Substantial damage
  > A complete loss of engine power during an agricultural application flight for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN13LA478](https://openairdocs.org/ntsb/CEN13LA478.md): Douglas Brian G BA-100 · Killeen, TX · Accident · No injuries · Limited investigation · Final report · Aug 10, 2013 · N27BD · Substantial damage
  > The pilot’s improper management of the fuel mixture, which resulted in an over-rich fuel mixture condition and a subsequent partial loss of engine power.

Next page: https://openairdocs.org/ntsb.md?engine=99999&page=11

## 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=10

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