# NTSB investigations: Amateur-built UNKNOWN ENG, 1996

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 MIA97LA045](https://openairdocs.org/ntsb/MIA97LA045.md): Issoire-Aviation PIK-30 · Boynton Beach, FL · Accident · No injuries · Limited investigation · Final report · Dec 28, 1996 · N25RJ · Substantial damage
  > failure of the engine to restart for undetermined reason(s), after gliding (sailing) for about 3 hours, resulting in a forced landing in a swamp.
- [NTSB SEA97LA020](https://openairdocs.org/ntsb/SEA97LA020.md): Karmy Rotorway Exec · Redmond, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 25, 1996 · N728PC · Substantial damage
  > The pilot's failure to remove the dolly wheels during the preflight inspection.
- [NTSB SEA96LA220](https://openairdocs.org/ntsb/SEA96LA220.md): Ralph Taylor Royal T · Kent, WA · Accident · No injuries · Limited investigation · Final report · Sep 25, 1996 · N2554 · Substantial damage
  > in-flight collision with an unknown object.
- [NTSB FTW96LA377](https://openairdocs.org/ntsb/FTW96LA377.md): Pzl-Mielec MIG-17 · Amarillo, TX · Accident · Serious injuries · Limited investigation · Final report · Sep 6, 1996 · N1719 · Destroyed
  > The pilot's excessive takeoff rotation which led to premature lift-off at a speed inadequate to maintain flight. A factor was the pilot's lack of experience in the MIG-17.
- [NTSB FTW96LA360](https://openairdocs.org/ntsb/FTW96LA360.md): Cresap Early Bird Jenny · Kersey, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 25, 1996 · N12JN · Destroyed
  > Failure of the throttle linkage. A related factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW96LA356](https://openairdocs.org/ntsb/FTW96LA356.md): Bell 47 Soloy · Intracoastal, LA · Accident · No injuries · Limited investigation · Final report · Aug 23, 1996 · N1169W · Destroyed
  > the loss of aircraft control by unknown person(s).
- [NTSB SEA96LA196](https://openairdocs.org/ntsb/SEA96LA196.md): Westcott Glasair I-FT · Puyallup, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 21, 1996 · N289W · Substantial damage
  > failure of the air inlet screen, and subsequent ingestion of the foam air filter. An inadequate maintenance modification by the amateur builder and no suitable landing area were related factors.
- [NTSB SEA96LA191](https://openairdocs.org/ntsb/SEA96LA191.md): Champion 7ECA · Lander, WY · Accident · No injuries · Limited investigation · Final report · Aug 19, 1996 · N9542S · Substantial damage
  > the pilot's failure to maintain directional control of the airplane during the landing roll. Factors relating to the accident were: the variable and gusty wind conditions.
- [NTSB SEA96LA188](https://openairdocs.org/ntsb/SEA96LA188.md): Jonas Exec 90 · Hermiston, OR · Accident · Minor injuries · Limited investigation · Final report · Aug 12, 1996 · N6183P · Substantial damage
  > slippage of the drive belts, while hover taxiing in ground effect, which resulted in loss of power to the rotor system; and inadequate remedial action by the pilot, which led to a roll over during touch down (forced landing). A factor relating to the accident…
- [NTSB SEA96LA162](https://openairdocs.org/ntsb/SEA96LA162.md): Conkey/Wapelhorst Lancair 235 · Cottage Grove, OR · Accident · No injuries · Limited investigation · Final report · Jul 20, 1996 · N235WC · Substantial damage
  > release of the main landing gear locking mechanism for undetermined reason(s).
- [NTSB FTW96LA294](https://openairdocs.org/ntsb/FTW96LA294.md): O'Day Sonerai II-LS · Friendswood, TX · Accident · Minor injuries · Limited investigation · Final report · Jul 9, 1996 · N30155 · Substantial damage
  > a loss of engine power for undetermined reasons, and the pilot's failure to attain the proper traffic pattern altitude on the downwind leg prior to turning the base leg.
- [NTSB CHI96LA225](https://openairdocs.org/ntsb/CHI96LA225.md): Sisk BD-5 · Lake Geneva, WI · Accident · Serious injuries · Limited investigation · Final report · Jul 1, 1996 · N51SK · Destroyed
  > failure of the pilot to abort the takeoff, while there was sufficient runway remaining. The high temperature and calm wind were related factors.
- [NTSB MIA96FA168](https://openairdocs.org/ntsb/MIA96FA168.md): Hiller FH-1100 · Webster, FL · Accident · 2 fatal · Field investigation · Final report · Jun 28, 1996 · N598F · Substantial damage
  > inadequate compliance with AD 77-07-08 (and SB FH1100-55-2A) by other maintenance personnel, and subsequent fatigue failure of plates in the tail rotor torsion tension bar. Factors related to the accident were: manufacturing discontinuities…
- [NTSB CHI96LA208](https://openairdocs.org/ntsb/CHI96LA208.md): Aerotechnik L-13 · Wichita, KS · Accident · No injuries · Limited investigation · Final report · Jun 20, 1996 · N21400 · Substantial damage
  > the pilot's inadequate in-flight planning. Factors were the insufficient altitude and the dead battery.
- [NTSB CHI96LA192](https://openairdocs.org/ntsb/CHI96LA192.md): Carrison-Seiman Schukert D-1 · Gardner, KS · Accident · No injuries · Limited investigation · Final report · Jun 10, 1996 · N51CQ · Substantial damage
  > an aileron control malfunction of undetermined origin. A factor was the pilot's inability to control the airplane.
- [NTSB NYC96LA117](https://openairdocs.org/ntsb/NYC96LA117.md): Cessna 177B · Chatham, MA · Accident · Minor injuries · Limited investigation · Final report · May 28, 1996 · N19708 · Substantial damage
  > failure of the oil pump, which resulted in oil starvation and subsequent failure of the number two and four cylinder connecting rods. Also causal was inadequate maintenance by noncompliance with the airworthiness directive that required replacement of the oil…
- [NTSB LAX96LA212](https://openairdocs.org/ntsb/LAX96LA212.md): Schleicher ASW-20 · Sparks, NV · Accident · Serious injuries · Limited investigation · Final report · May 28, 1996 · N204Q · Substantial damage
  > the pilot's inadequate compensation for wind conditions during the takeoff roll, and his failure to maintain control of the glider. The gusty wind condition was a related factor.
- [NTSB NYC96LA114](https://openairdocs.org/ntsb/NYC96LA114.md): Waco UPF-7 · East Canton, PA · Accident · Minor injuries · Limited investigation · Final report · May 25, 1996 · N32091 · Substantial damage
  > the pilot's inadequate compensation for wind conditions, and his failure to maintain directional control, which resulted in a loss of control and subsequent collision with obstacles. The gusty crosswind condition was a related factor.
- [NTSB FTW96FA216](https://openairdocs.org/ntsb/FTW96FA216.md): Nanchang CJ-6A · Shreveport, LA · Accident · 2 fatal · Field investigation · Final report · May 16, 1996 · N24AD · Destroyed
  > a loss of engine power due to failure of the pressure carburetor diaphragm which led to restricted fuel flow through the carburetor and eventual fuel starvation. Factors contributing to the accident were the unsuitable terrain and tall trees which resulted in…
- [NTSB IAD96LA077](https://openairdocs.org/ntsb/IAD96LA077.md): Hiller UH-12E · Hellam, PA · Accident · Minor injuries · Limited investigation · Final report · May 14, 1996 · N90467 · Substantial damage
  > the pilot's loss of directional control during aerial application for undetermined reasons.
- [NTSB NYC96LA104](https://openairdocs.org/ntsb/NYC96LA104.md): Schweizer SGS-2-33A · Readington, NJ · Accident · Serious injuries · Limited investigation · Final report · May 11, 1996 · N17957 · Substantial damage
  > the pilot's inadequate evaluation of the weather, and his misjudgment of altitude and distance from the runway. Contributing factors were the pilot's lack of recent experience and the weather.
- [NTSB FTW96IA210](https://openairdocs.org/ntsb/FTW96IA210.md): Boeing 737-300 · Dallas, TX · Incident · No injuries · Incident investigation · Final report · May 11, 1996 · N315SW · Minor damage
  > failure of the pilot to maintain directional control and runway alignment, during the landing roll out. Factors relating to the incident were: darkness, the adverse weather condition, the wet runway, and reduced visibility due to the inadvertent encounter…
- [NTSB ANC96LA069](https://openairdocs.org/ntsb/ANC96LA069.md): Gillespie Challenger 2 · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · May 5, 1996 · N1591G · Substantial damage
  > The pilot's failure to properly use the mixture control to enrich the fuel mixture, and the seizure of the piston in the cylinder.
- [NTSB CHI96IA145](https://openairdocs.org/ntsb/CHI96IA145.md): Boeing 727-222A · Chicago, IL · Incident · Minor injuries · Incident investigation · Final report · Apr 28, 1996 · N7443U · No damage
  > a passenger disturbance that required the flight attendant to leave her seat. A factor in this accident was the encounter with turbulence as the flight attendant was performing her assigned duties.
- [NTSB MIA96LA113](https://openairdocs.org/ntsb/MIA96LA113.md): Snowbird 636D4 · Okeechobee, FL · Accident · 2 fatal · Limited investigation · Final report · Apr 10, 1996 · N7047J · Destroyed
  > the failure of the main rotor control connecting rod, which rendered the control stick unusable and led to a loss of control.
- [NTSB CHI96LA110](https://openairdocs.org/ntsb/CHI96LA110.md): Yakovlev YAK C-11 · North Vernon, IN · Accident · No injuries · Limited investigation · Final report · Mar 16, 1996 · N9YK · Substantial damage
  > Failure of the pilot to maintain adequate airspeed during an aborted landing, which resulted in an inadvertent stall.
- [NTSB FTW96LA132](https://openairdocs.org/ntsb/FTW96LA132.md): Grumman G-164A · Dewitt, AR · Accident · No injuries · Limited investigation · Final report · Feb 24, 1996 · N48435 · Substantial damage
  > a loss of engine power due to the malfunction of the carburetor as a result of an improper overhaul. A factor was the unsuitable terrain for the forced landing.
- [NTSB LAX96LA112](https://openairdocs.org/ntsb/LAX96LA112.md): Steeves KR2 · San Diego, CA · Accident · 1 fatal · Limited investigation · Final report · Feb 17, 1996 · N395DS · Destroyed
  > failure of the pilot to maintain an adequate airspeed margin above stall, while at low altitude in the traffic pattern. His decision to explore the slow speed envelope of the aircraft at low altitude was a related factor.
- [NTSB LAX96IA087](https://openairdocs.org/ntsb/LAX96IA087.md): Boeing 747-251B · Los Angeles, CA · Incident · No injuries · Incident investigation · Final report · Jan 5, 1996 · N628US · Minor damage
  > The fatigue fracture of the number 4 bearing oil pressure tube due to an improper maintenance cleaning procedure by company maintenance personnel.
- [NTSB SEA96FA036](https://openairdocs.org/ntsb/SEA96FA036.md): Piper PA-28-235 · Lehi, UT · Accident · 1 fatal · Field investigation · Final report · Jan 2, 1996 · N8870W · Destroyed
  > continued VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain sufficient altitude and/or clearance from mountainous terrain. Factors relating to the accident were: darkness, low ceiling, and snow.

## 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") = 1996
  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=1996

---
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.