# 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 18 of 41 · 2,048 cases

## Cases, newest first

- [NTSB CHI07CA214](https://openairdocs.org/ntsb/CHI07CA214.md): Grumman G-164B · Sheldon, IL · Accident · Minor injuries · Data collection · Final report · Jul 15, 2007 · N8449K · Substantial damage
  > The pilot's inability to maintain a proper rate of climb during takeoff. Factors associated with the accident were the pilot's failure to dump the chemical load and the ditch which the airplane contacted.
- [NTSB SEA07FA195](https://openairdocs.org/ntsb/SEA07FA195.md): Yakovlev YAK-55M · Everett, WA · Accident · 1 fatal · Field investigation · Final report · Jul 14, 2007 · N55NH · Destroyed
  > The pilot's inadequate preflight planning and inspection that led to oil exhaustion and a catastrophic engine failure. Also causal was the pilot's attempted operation of an aircraft with known deficiencies, and the lack of a current airworthiness inspection.…
- [NTSB LAX07LA220](https://openairdocs.org/ntsb/LAX07LA220.md): Murrin Frederick L Sopwith F1 · Greenville, PA · Accident · Serious injuries · Limited investigation · Final report · Jul 14, 2007 · N6338 · Substantial damage
  > a fuel starvation induced loss of engine power due to inadequate fuel system pressure. A factor in the accident was the pilot/builder's failure to adequately adjust the fuel system pressure.
- [NTSB DFW07CA161](https://openairdocs.org/ntsb/DFW07CA161.md): Rodgers Zodiac 601XL · Levelland, TX · Accident · No injuries · Data collection · Final report · Jul 14, 2007 · N4589 · Substantial damage
  > The loss of engine power for undermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX07LA210](https://openairdocs.org/ntsb/LAX07LA210.md): Aviation International Rotors CH-54A · Los Olivos, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 8, 2007 · N44094 · Substantial damage
  > The company mechanic's inadequately performed maintenance and inspection, which resulted in a flight control malfunction and loss of control during takeoff.
- [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 CHI07LA203](https://openairdocs.org/ntsb/CHI07LA203.md): Piper PA-36-285 · Belle Plaine, IA · Accident · No injuries · Limited investigation · Final report · Jul 3, 2007 · N57600 · Substantial damage
  > The pilot's failure to maintain directional control during landing rollout.
- [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 CHI07CA196](https://openairdocs.org/ntsb/CHI07CA196.md): Anderson Glasair FT II · Cedar Rapids, IA · Accident · Minor injuries · Data collection · Final report · Jun 29, 2007 · N123JA · Substantial damage
  > The loss of engine power for undetermined reasons during the downwind leg, which resulted in a forced landing. A factor in the accident was the unsuitable terrain encountered.
- [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 SEA07CA167](https://openairdocs.org/ntsb/SEA07CA167.md): Rallison Rotorway 162F · Logan, UT · Accident · No injuries · Data collection · Final report · Jun 18, 2007 · N203XR · Substantial damage
  > The total loss of engine power due to the pilot inadvertently deactivating the rotor drive clutch assembly. A contributing factor was the downhill terrain condition where he landed, which exceeded the slope limitations of the helicopter.
- [NTSB NYC07LA140](https://openairdocs.org/ntsb/NYC07LA140.md): Stinson 108-2 · Washington, NC · Accident · Serious injuries · Limited investigation · Final report · Jun 17, 2007 · N267C · Destroyed
  > A loss of engine power for undetermined reasons. Contributing to the accident was the proximity of trees.
- [NTSB CHI07CA165](https://openairdocs.org/ntsb/CHI07CA165.md): WSK PZL Mielec PZL-M-18 · Manito, IL · Accident · Minor injuries · Data collection · Final report · Jun 11, 2007 · N26756 · Substantial damage
  > The pilot's failure to maintain proper airspeed and his decision to attempt flight over maximum gross weight. A factor to the accident was the stall encountered while attempting to avoid obstacles.
- [NTSB DEN07LA098](https://openairdocs.org/ntsb/DEN07LA098.md): Boeing 757-251 · Denver, CO · Accident · Serious injuries · Limited investigation · Final report · Jun 3, 2007 · N523US · No damage
  > The inadvertent encounter with moderate turbulence during the approach which resulted in a serious injury to the flight attendant
- [NTSB LAX07LA184](https://openairdocs.org/ntsb/LAX07LA184.md): Brook Lancair IV-P · Parowan, UT · Accident · No injuries · Limited investigation · Final report · Jun 2, 2007 · N401PT · Substantial damage
  > A loss of engine power due to engine inlet icing. Contributing to the accident was the lack of engine inlet anti-icing capability.
- [NTSB CHI07CA152](https://openairdocs.org/ntsb/CHI07CA152.md): Cessna 421C · Kokomo, IN · Accident · No injuries · Data collection · Final report · May 22, 2007 · N85SC · Substantial damage
  > The pilot not obtaining proper alignment with the runway during the emergency landing after takeoff, which imparted an excessive side load on the landing gear. Factors contributing to the accident were the unstabilized approach and engine shutdown due to the…
- [NTSB ATL07CA084](https://openairdocs.org/ntsb/ATL07CA084.md): Rotorway Rotorway Intl 162F · Argyle, NY · Accident · No injuries · Data collection · Final report · May 21, 2007 · N636PB · Substantial damage
  > The loss of engine power due to the sticking of the exhaust valves that resulted from carbon buildup.
- [NTSB NYC07CA122](https://openairdocs.org/ntsb/NYC07CA122.md): Hanson Gerald Hanson Bucker 131E · Memphis, TN · Accident · Minor injuries · Data collection · Final report · May 19, 2007 · N234RX · Substantial damage
  > The pilot's inadequate visual lookout that resulted in a collision with a lighting structure in the grass while landing. A factor in the accident was the pilot's intentional landing in the runway safety area.
- [NTSB DFW07LA103](https://openairdocs.org/ntsb/DFW07LA103.md): Livpt Lancair IV-P · McAllen, TX · Accident · 2 fatal · Limited investigation · Final report · May 2, 2007 · N119TC · Destroyed
  > A loss of power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB DEN07FA089](https://openairdocs.org/ntsb/DEN07FA089.md): Schleicher Alexander ASH 26E · Castle Rock, CO · Accident · 1 fatal · Field investigation · Final report · Apr 29, 2007 · N123KS · Substantial damage
  > the pilot's failure to maintain aircraft control resulting in an inadvertent stall/mush.
- [NTSB CHI07CA124](https://openairdocs.org/ntsb/CHI07CA124.md): Wilkinson Daniel V Rotorway Exec 90 · Kalamazoo, MI · Accident · No injuries · Data collection · Final report · Apr 28, 2007 · N52988 · Destroyed
  > The failure of the sprag clutch which resulted in the disengagement of the drive unit and the pilot's misjudged landing during the autorotation. A factor was the low altitude at which the failure occurred.
- [NTSB LAX07CA133](https://openairdocs.org/ntsb/LAX07CA133.md): Jiran FJ-1 · Banks, OR · Accident · No injuries · Data collection · Final report · Apr 22, 2007 · N366W · Substantial damage
  > the pilot's misjudged distance/altitude that led to a failure to attain the proper touchdown point.
- [NTSB CHI07LA113](https://openairdocs.org/ntsb/CHI07LA113.md): Murphy Aircraft Mfg SR3500 Moose · Cotter, AR · Accident · 2 fatal · Limited investigation · Final report · Apr 22, 2007 · N360MM · Substantial damage
  > The pilot not maintaining airplane control and airspeed during the approach. Factors were the gusty wind conditions, the inadvertent stall the pilot encountered, and the power lines that were impacted during the uncontrolled descent.
- [NTSB CHI07LA106](https://openairdocs.org/ntsb/CHI07LA106.md): Browns Vans RV-7A · Gardner, IL · Accident · Minor injuries · Limited investigation · Final report · Apr 16, 2007 · N799WB · Substantial damage
  > Engine failure during cruise flight for undetermined reasons. A factor was the rough/uneven terrain
- [NTSB SEA07LA095](https://openairdocs.org/ntsb/SEA07LA095.md): Diemert/Rotorway Exec 162 F · Roseburg, OR · Accident · No injuries · Limited investigation · Final report · Apr 8, 2007 · N173ST · Substantial damage
  > a total loss of engine power due to the failure of the primary and secondary electronic control units (ECU's) within the engine's Fully Automated Digital Electronic Control.
- [NTSB SEA07CA084](https://openairdocs.org/ntsb/SEA07CA084.md): Boykin Rotorway Exec 162F · Camarillo, CA · Accident · No injuries · Data collection · Final report · Mar 25, 2007 · N496SB · Substantial damage
  > The pilot's failure to maintain main rotor RPM resulting in an uncontrolled descent to a hard landing. A contributing factor was his lack of experience in make and model of aircraft.
- [NTSB DFW07LA087](https://openairdocs.org/ntsb/DFW07LA087.md): PZL 101A · Spicewood, TX · Accident · No injuries · Limited investigation · Final report · Mar 25, 2007 · N69NV · Substantial damage
  > The loss of engine power due to water contamination in the fuel system. A contributing factor was the lack of suitable terrain available for the forced landing.
- [NTSB SEA07CA083](https://openairdocs.org/ntsb/SEA07CA083.md): Duffy/Wagner Vans RV-4 · Ogden, UT · Accident · No injuries · Data collection · Final report · Mar 24, 2007 · N423DW · Substantial damage
  > The pilot's inadequate fuel management resulting in a loss of engine power due to fuel starvation. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB MIA07CA061](https://openairdocs.org/ntsb/MIA07CA061.md): Bruce E. Hotz Wind Wagon · Leesburg, FL · Accident · Minor injuries · Data collection · Final report · Mar 19, 2007 · N9017M · Substantial damage
  > The failure of the pilot to abort the takeoff after recognizing that the engine rpm was 760 less than desired after becoming airborne, and the inability of the airplane to maintain a positive rate of climb resulting in a controlled descent, and in-flight…
- [NTSB CHI07LA091](https://openairdocs.org/ntsb/CHI07LA091.md): Haddan Sonerai IIL · Fort Atkinson, WI · Accident · Serious injuries · Limited investigation · Final report · Mar 17, 2007 · N5200C · Substantial damage
  > The pilot's failure to maintain airspeed following a loss of engine power for undetermined reasons. A low altitude and an inadvertent stall were factors.
- [NTSB DFW07FA071](https://openairdocs.org/ntsb/DFW07FA071.md): Stevens KB-2 · Oklahoma City, OK · Accident · 1 fatal · Field investigation · Final report · Feb 18, 2007 · N6KT · Substantial damage
  > The pilot's failure to maintain control of the gyroplane while in the traffic pattern. Contributing to the accident was the high wind with terrain induced turbulence and the absence of the gyroplane's horizontal stabilizer.
- [NTSB ATL07CA043](https://openairdocs.org/ntsb/ATL07CA043.md): Burkhart-Grob G109 · Monticello, GA · Accident · No injuries · Data collection · Final report · Feb 12, 2007 · N3875R · Substantial damage
  > The pilot's improper recovery from a bounced landing, which resulted in a loss of control, an in-flight collision with a hangar, and subsequent in-flight collision with the runway.
- [NTSB MIA07CA046](https://openairdocs.org/ntsb/MIA07CA046.md): C.W Crane T2 · Bunnell, FL · Accident · Minor injuries · Data collection · Final report · Feb 2, 2007 · N69TT · Destroyed
  > The pilot's inadvertent encounter with adverse weather that resulted in a descent and an impact with terrain.
- [NTSB CHI07LA070](https://openairdocs.org/ntsb/CHI07LA070.md): Reisinger Sonerai II L · Alma, MI · Accident · Minor injuries · Limited investigation · Final report · Jan 20, 2007 · N59RR · Destroyed
  > The loss of engine power during takeoff-initial climb for an undetermined reason. A factor in the accident was the lack of suitable terrain for a forced landing.
- [NTSB DEN07LA044](https://openairdocs.org/ntsb/DEN07LA044.md): Marino Exec 162F-1995 · Baldwin City, KS · Accident · Serious injuries · Limited investigation · Final report · Jan 3, 2007 · N113JD · Substantial damage
  > the failure of the tail rotor drive belt for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI07FA052](https://openairdocs.org/ntsb/CHI07FA052.md): Beech 58 · Washington, IN · Accident · 1 fatal · Field investigation · Final report · Jan 2, 2007 · N678DC · Destroyed
  > The pilot's failure to maintain clearance from trees and terrain while attempting to return to the departure airport for undetermined reasons after takeoff. The intervening tree line was a contributing factor.
- [NTSB LAX07CA063](https://openairdocs.org/ntsb/LAX07CA063.md): Belcher Helicycle · Boulder City, NV · Accident · No injuries · Data collection · Final report · Dec 23, 2006 · N6912B · Substantial damage
  > a loss of engine power due to a fractured fuel line.
- [NTSB CHI07LA037](https://openairdocs.org/ntsb/CHI07LA037.md): Piper PA-31T1 · Waterloo, IA · Accident · No injuries · Limited investigation · Final report · Dec 13, 2006 · N20DL · Substantial damage
  > The go-around not performed and the improper flare by the pilot during landing.
- [NTSB SEA07LA025](https://openairdocs.org/ntsb/SEA07LA025.md): Holloway RV6A · North Bend, OR · Accident · 2 fatal · Limited investigation · Final report · Dec 3, 2006 · N914C · Destroyed
  > The pilot's failure to maintain clearance from the water while performing low altitude maneuvering flight resulting in an in flight collision with the water.
- [NTSB LAX07LA047](https://openairdocs.org/ntsb/LAX07LA047.md): Interavia E-3 · San Pedro, CA · Accident · 1 fatal · Limited investigation · Final report · Nov 25, 2006 · N4426X · Substantial damage
  > Loss of control for undetermined reasons.
- [NTSB NYC07LA026](https://openairdocs.org/ntsb/NYC07LA026.md): Vogel Glastar 41 · Snow Shoe, PA · Accident · 1 fatal · Limited investigation · Final report · Nov 11, 2006 · N441AV · Substantial damage
  > The builder's improper installation of an additional alternator. Contributing to the accident were the night lighting conditions.
- [NTSB NYC07LA022](https://openairdocs.org/ntsb/NYC07LA022.md): Monard RAF 2000 GTX · Ridgely, MD · Accident · 1 fatal · Limited investigation · Final report · Nov 5, 2006 · N107TM · Substantial damage
  > The pilot's failure to maintain rotor rpm while maneuvering, which resulted in a loss of rotor blade rigidity.
- [NTSB CHI07FA009](https://openairdocs.org/ntsb/CHI07FA009.md): Beech 95-B55 · Lawrenceville, IL · Accident · 1 fatal · Field investigation · Final report · Oct 27, 2006 · N1832N · Substantial damage
  > The improper judgment by the pilot to conduct a flight to, and execute an approach to, an airport with weather conditions that were below the required minimums. Also causal was the pilot's continued descent below the approach minimum descent altitude.…
- [NTSB ATL07CA009](https://openairdocs.org/ntsb/ATL07CA009.md): Lawing Thomas R Exec 162-F · Aiken, SC · Accident · No injuries · Data collection · Final report · Oct 14, 2006 · N848TL · Substantial damage
  > The pilot’s failure to adequately compensate for wind conditions during takeoff which resulted in a loss of tail rotor effectiveness and a roll over during an attempted forced landing.
- [NTSB SEA07LA011](https://openairdocs.org/ntsb/SEA07LA011.md): Sorensen Searey · Marysville, WA · Accident · No injuries · Limited investigation · Final report · Oct 12, 2006 · N9877S · Substantial damage
  > The pilot's failure to identify an unsafe condition (strong tidal currents) prior to a water landing, which resulted in the airplane nosing over when the pilot was unable to maintain aircraft control.
- [NTSB CHI06LA273](https://openairdocs.org/ntsb/CHI06LA273.md): Daub Pawnee Chief · McCook, NE · Accident · Minor injuries · Limited investigation · Final report · Sep 28, 2006 · N565CH · Destroyed
  > The failure of a welded joint at a cyclic control cable bracket located on the main rotor mast which made control of the helicopter impossible for the pilot.
- [NTSB ANC06FA136](https://openairdocs.org/ntsb/ANC06FA136.md): de Havilland DHC-2 · Kodiak, AK · Accident · 1 fatal · Field investigation · Final report · Sep 21, 2006 · N5154G · Substantial damage
  > The pilot's failure to maintain adequate airspeed while maneuvering to reverse direction, which resulted in an inadvertent stall and an uncontrolled descent. Factors associated with the accident were the inadvertent stall and wind gusts.
- [NTSB NYC06LA224](https://openairdocs.org/ntsb/NYC06LA224.md): Garlick OH-58A · East Bridgewate, MA · Accident · Serious injuries · Limited investigation · Final report · Sep 19, 2006 · N802JB · No damage
  > The completion center's installation of the incorrect (shorter) release cable, and the ground crewmember's improper movement under the flight path during a bin transfer.
- [NTSB CHI06CA265](https://openairdocs.org/ntsb/CHI06CA265.md): Piper PA-34-220T · Dayton, OH · Accident · No injuries · Data collection · Final report · Sep 13, 2006 · N434TW · Substantial damage
  > The pilot's inadvertent wheels up landing.
- [NTSB CHI06LA260](https://openairdocs.org/ntsb/CHI06LA260.md): Endless Skies L164 · Durand, MI · Accident · No injuries · Limited investigation · Final report · Sep 11, 2006 · N2627J · Substantial damage
  > The kit builder's improper installation of the aileron bracket leading to the aileron flutter during cruise that resulted in the wing spars' failure.

Next page: https://openairdocs.org/ntsb.md?engine=99999&page=19

## 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=18

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