# NTSB investigations, 1990, WI

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 CHI91LA047](https://openairdocs.org/ntsb/CHI91LA047.md): Cessna 175 · Boscobel, WI · Accident · 2 fatal · Limited investigation · Final report · Dec 19, 1990 · N6626E · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions (IMC) and his failure to remain clear of the trees. Factors related to the accident were: the adverse weather conditions and the pilot's lack of instrument experience.
- [NTSB CHI91LA042](https://openairdocs.org/ntsb/CHI91LA042.md): Cessna 150 · Portage, WI · Accident · No injuries · Limited investigation · Final report · Dec 6, 1990 · N11327 · Substantial damage
  > Delayed go-around and stall encountered. Contributing factors were a snow bank, proper alignment not attained, and raising the flaps not performed by the PIC.
- [NTSB CHI91DEP02](https://openairdocs.org/ntsb/CHI91DEP02.md): Cessna 172P · Hayward, WI · Accident · Serious injuries · Final report · Nov 9, 1990 · N64406 · Destroyed
  > The pilot-in-command's intentional flight into known adverse weather.
- [NTSB CHI91DEP01](https://openairdocs.org/ntsb/CHI91DEP01.md): Dean Bartel Avid Flyer Stol · New London, WI · Accident · No injuries · Final report · Nov 4, 1990 · N287AF · Substantial damage
  > The pilot's failure to obtain a proper touchdown point and his delay in initiating a go-around.
- [NTSB CHI91LA019](https://openairdocs.org/ntsb/CHI91LA019.md): Cessna 150 · La Crosse, WI · Accident · No injuries · Limited investigation · Final report · Oct 30, 1990 · N7641G · Substantial damage
  > Inadequate visual outlook by the PIC.
- [NTSB CHI91LA020](https://openairdocs.org/ntsb/CHI91LA020.md): Piper PA-28-180D · Crivitz, WI · Accident · Serious injuries · Limited investigation · Final report · Oct 28, 1990 · N264W · Destroyed
  > Improper planning/decision by the pilot, and his failure to abort the takeoff (while there was sufficient runway remaining).
- [NTSB CHI91LA017](https://openairdocs.org/ntsb/CHI91LA017.md): Cessna 172 · Portage, WI · Accident · Minor injuries · Limited investigation · Final report · Oct 27, 1990 · N738AP · Substantial damage
  > The PIC became lost and disorientated and performed a premature precautionary landing.
- [NTSB CHI90LA274](https://openairdocs.org/ntsb/CHI90LA274.md): Burkhart Grob 109A · Waukesha, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 26, 1990 · N912G · Substantial damage
  > The pilot's failure to maintain adequate clearance and visual lookout for the moving tractor.
- [NTSB CHI90DEP11](https://openairdocs.org/ntsb/CHI90DEP11.md): Varga Kachina 2150A · Neenah, WI · Accident · Minor injuries · Final report · Sep 22, 1990 · N8422J · Substantial damage
  > The pilot's misjudgement of the fuel supply, and his failure to refuel the aircraft. Contributing to the accident was the unsuitable, soft terrain encountered.
- [NTSB CHI90LA266](https://openairdocs.org/ntsb/CHI90LA266.md): Cessna 152 · Eau Claire, WI · Accident · No injuries · Limited investigation · Final report · Sep 15, 1990 · N67758 · Substantial damage
  > Fuel exhaustion. Contributing factor was the unsuitable terrain.
- [NTSB CHI90DEP10](https://openairdocs.org/ntsb/CHI90DEP10.md): Brose Cirrus VK-30 · Baraboo, WI · Accident · No injuries · Final report · Aug 28, 1990 · N420A · Substantial damage
  > The pilot's inadequate preflight and misjudgement of the amount of fuel on board, which resulted in fuel exhaustion and loss of engine power, due to an inadequate supply of fuel. The inoperative fuel totalizer was a related factor.
- [NTSB CHI90MA244](https://openairdocs.org/ntsb/CHI90MA244.md): Bell 206B · Elkhorn, WI · Accident · 5 fatal · Major investigation · Final report · Aug 27, 1990 · N16933 · Destroyed
  > Improper planning/decision by the pilot, and his failure to attain adequate altitude before flying over rising terrain at night. Factors related to the accident were: darkness, fog, haze, rising terrain, and the lack of visual cues that were available to the…
- [NTSB CHI90FA236](https://openairdocs.org/ntsb/CHI90FA236.md): Piper PA-32R-300 · Watertown, WI · Accident · 7 fatal · Field investigation · Final report · Aug 19, 1990 · N4070Q · Destroyed
  > Initiation of VFR flight into adverse weather and instrument meteorologial conditions. Factors which contributed to the accident were the adverse weather conditions and the pilot's self-induced pressure to maintain currency.
- [NTSB CHI90DEP09](https://openairdocs.org/ntsb/CHI90DEP09.md): Cessna 182 · Columbus, WI · Accident · Serious injuries · Final report · Aug 18, 1990 · N20824 · Substantial damage
  > The skydiver's panic and failure to depart the aircraft as instructed. Contributing was the skydiver's lack of total experience in this type of operation.
- [NTSB CHI90FAMS3](https://openairdocs.org/ntsb/CHI90FAMS3.md): Cessna 172M · Kewaunee, WI · Accident · 2 fatal · Missing aircraft · Final report · Aug 14, 1990 · N9529H · Destroyed
  > Undetermined.
- [NTSB CHI90DER06](https://openairdocs.org/ntsb/CHI90DER06.md): Mooney M20C · Webster, WI · Accident · 1 fatal · Final report · Aug 12, 1990 · N9468V · Destroyed
  > The pilot's failure to maintain control of the airplane. Factors related to the accident were: the dark night, the pilot's alcohol impairment, and his night flying restriction.
- [NTSB CHI90DEP08](https://openairdocs.org/ntsb/CHI90DEP08.md): Christen Industries Eagle II · Milwaukee, WI · Accident · Minor injuries · Final report · Aug 7, 1990 · N44ED · Substantial damage
  > The pilot-in-command's failure to maintain aircraft control, his misjudgment of proper glidepath and his not performing a timely go-around.
- [NTSB CHI90FA212](https://openairdocs.org/ntsb/CHI90FA212.md): Boeing A75N1 · Oshkosh, WI · Accident · 1 fatal · Field investigation · Final report · Aug 2, 1990 · N25400 · Destroyed
  > The pilot-in-command's failure to maintain airspeed sufficient to avoid a stall/spin at an altitude insufficient to effect a full recovery.
- [NTSB CHI90FA208](https://openairdocs.org/ntsb/CHI90FA208.md): Lockheed 12A · Oshkosh, WI · Accident · Serious injuries · Field investigation · Final report · Jul 31, 1990 · N12AT · Destroyed
  > The inadequate emergency procedure(s) by the pilot in command following a loss of engine power for undetermined reasons(s).
- [NTSB CHI90LA209](https://openairdocs.org/ntsb/CHI90LA209.md): Cessna 150 · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Jul 30, 1990 · N11948 · Substantial damage
  > Loss of engine power for an undetermined reason.
- [NTSB CHI90LA201](https://openairdocs.org/ntsb/CHI90LA201.md): Bryant Rowland T-18 · Fisk, WI · Accident · No injuries · Limited investigation · Final report · Jul 30, 1990 · N66BR · 2 aircraft · Substantial damage
  > The pilot-in-command of the thorp T-18'S failure to maintain a sufficient visual lookout to avoid a collision with the Cessna 170A. Contributing was the limited visibility forward and to the right in the thorp T-18.
- [NTSB CHI90LA210](https://openairdocs.org/ntsb/CHI90LA210.md): Piper J-3 CUB · Clay Banks, WI · Accident · No injuries · Limited investigation · Final report · Jul 29, 1990 · N1455N · Substantial damage
  > Pilot's failure to maintain an adequate visual lookout during the descent. Contributing factors are the pilot's poor weather evaluation, and continued VFR flight into IFR conditions.
- [NTSB CHI90LA200](https://openairdocs.org/ntsb/CHI90LA200.md): Beech A36TC · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Jul 26, 1990 · N3738U · Substantial damage
  > The pilot's failure to recognize the deteriorating airspeed and imminent stall during the landing flare, which resulted in a hard landing.
- [NTSB CHI90LA199](https://openairdocs.org/ntsb/CHI90LA199.md): Fouga FOUGA-MAGISTER · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Jul 26, 1990 · N302FM · Substantial damage
  > The pilot-in-command's failure to maintain proper airspeed in turn from base to final.
- [NTSB CHI90FA197](https://openairdocs.org/ntsb/CHI90FA197.md): Custom Aerotech White Lightning · Oshkosh, WI · Accident · 2 fatal · Field investigation · Final report · Jul 26, 1990 · N7147W · Destroyed
  > The pilot-in-command's failure to maintain airspeed to avoid loss of control of the aircraft.
- [NTSB CHI90LA189](https://openairdocs.org/ntsb/CHI90LA189.md): Mitsubishi MU-300 · Milwaukee, WI · Accident · No injuries · Limited investigation · Final report · Jul 18, 1990 · N800TJ · Substantial damage
  > The pilot's delayed determination of traction or braking action until too little runway remained to go around or to employ alternate means of activiating the brakes. Contributing to the accident was the overservicing of the main gear struts.
- [NTSB CHI90LA187](https://openairdocs.org/ntsb/CHI90LA187.md): Piper PA-30B · Webster, WI · Accident · No injuries · Limited investigation · Final report · Jul 14, 1990 · N8095Y · Substantial damage
  > The failure of the nose gear transmission mounting bracket which resulted in nose gear collapse during the landing roll.
- [NTSB CHI90LA194](https://openairdocs.org/ntsb/CHI90LA194.md): Piper PA-28-161 · Pulaski, WI · Accident · No injuries · Limited investigation · Final report · Jul 12, 1990 · N82676 · Substantial damage
  > The pilot's failure to maintain positive control of the airplane while landing. Factors related to the accident were the pilot's lack of total flight experience, and inadequate compensation for crosswind conditions.
- [NTSB CHI90DER01](https://openairdocs.org/ntsb/CHI90DER01.md): Piper PA-28-140 · New Richmond, WI · Accident · No injuries · Final report · Jul 12, 1990 · N5330F · Substantial damage
  > The pilot's inadequate preflight inspection, which resulted in the gascolator drain being left open.
- [NTSB CHI90DEP07](https://openairdocs.org/ntsb/CHI90DEP07.md): Bell 47-G2 · Hatley, WI · Accident · No injuries · Final report · Jul 10, 1990 · N6768D · Substantial damage
  > The partial loss of power due to sticking intake valves.
- [NTSB CHI90DEP06](https://openairdocs.org/ntsb/CHI90DEP06.md): Cessna 177B · Iola, WI · Accident · 1 fatal · Final report · Jul 6, 1990 · N30666 · Destroyed
  > Failure of the pilot to maintain adequate airspeed, which resulted in a stall/spin. Factors related to the accident were: the pilot's poorly planned approach, and his failure to go around.
- [NTSB CHI90LA164](https://openairdocs.org/ntsb/CHI90LA164.md): Cessna 182P · Cornell, WI · Accident · Serious injuries · Limited investigation · Final report · Jun 30, 1990 · N41RP · Destroyed
  > The pilot's inadequate preflight resulted in a loss of engine power due to contamination in the fuel system.
- [NTSB CHI90LA157](https://openairdocs.org/ntsb/CHI90LA157.md): Beech K-35 · Oshkosh, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 18, 1990 · N123AT · Substantial damage
  > Fuel mismanagement.
- [NTSB CHI90DEP05](https://openairdocs.org/ntsb/CHI90DEP05.md): Cirrus Klappmeier Cirrus VF-30 · Baraboo, WI · Accident · No injuries · Final report · Jun 14, 1990 · N888EK · Destroyed
  > Manufacturer's inadequate equipment design to prevent a fuel leak which resulted in an in-flight fire. A factor related to the accident was the lack of an unsuitable forced landing area.
- [NTSB CHI90DEP04](https://openairdocs.org/ntsb/CHI90DEP04.md): Goss KR-2 · Kenosha, WI · Accident · Serious injuries · Final report · May 27, 1990 · N777BG · Destroyed
  > Failure of the pilot to maintain control of the aircraft, while flying it with a laterally imbalanced condition. Factors related to the accident were: the pilot's lack of flying experience, and his lack of familiarity with this aircraft.
- [NTSB CHI90FA123](https://openairdocs.org/ntsb/CHI90FA123.md): Cessna 172N · New Richmond, WI · Accident · 3 fatal · Field investigation · Final report · May 6, 1990 · N76089 · Destroyed
  > Failure of the pilot to maintain sufficient airspeed to avoid a stall/spin. A factor related related to the accident was: the pilot's lack of familiarity with the make and model of aircraft.
- [NTSB CHI90FA117](https://openairdocs.org/ntsb/CHI90FA117.md): Bellanca 8KCAB · West Bend, WI · Accident · 2 fatal · Field investigation · Final report · Apr 24, 1990 · N2976R · Destroyed
  > Inflight failure of the right wing strut-to-spar attachment fitting due to fatigue initiated by improper welding techniques involving inadequate post-weld cooling control.
- [NTSB CHI90LA116](https://openairdocs.org/ntsb/CHI90LA116.md): Beech E 55 · New Richmond, WI · Accident · No injuries · Limited investigation · Final report · Apr 22, 1990 · N17577 · Substantial damage
  > Pilot's improper use of the landing gear mechanism during the landing roll, which resulted in the partial collapse of the landing gear.
- [NTSB CHI90LA115](https://openairdocs.org/ntsb/CHI90LA115.md): Beech F33A · Milwaukee, WI · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 1990 · N179DD · Substantial damage
  > The utilization of improper procedures on the part of the pilot in command by attempting to execute a coupled approach outside the parameters of the autopilot.
- [NTSB CHI90LA114](https://openairdocs.org/ntsb/CHI90LA114.md): Rockwell AC-690 · Sheboygan, WI · Accident · No injuries · Limited investigation · Final report · Apr 18, 1990 · N57175 · Substantial damage
  > Failure of the pilot to complete the landing checklist and lower the landing gear. Contributing to this accident is habit pattern interference and distraction.
- [NTSB CHI90LA107](https://openairdocs.org/ntsb/CHI90LA107.md): Cessna 150G · Franklin, WI · Accident · No injuries · Limited investigation · Final report · Apr 5, 1990 · N3876J · Substantial damage
  > Inadequate compensation for wind conditions by the pilot, and his failure to maintain runway alignment during the attempted go-around (aborted landing). The wind conditions and soft terrain were related factors.
- [NTSB CHI90DEP03](https://openairdocs.org/ntsb/CHI90DEP03.md): James A Nelson ZEN AIR CH701 · Raymond, WI · Accident · No injuries · Final report · Apr 3, 1990 · N360JN · Substantial damage
  > Manufacturer's inadequate design of the fuel drain. Contributing was the pilot-in-command's disregarding the fuel supply which resulted in fuel exhaustion.
- [NTSB CHI90LA103](https://openairdocs.org/ntsb/CHI90LA103.md): Piper PA-38 · Wausau, WI · Accident · No injuries · Limited investigation · Final report · Mar 24, 1990 · N2331C · Substantial damage
  > A hard landing resulting from the pilot not taking timely remedial when a stall was encountered.
- [NTSB CHI90LA074](https://openairdocs.org/ntsb/CHI90LA074.md): MBB BK-117A-1 · Janesville, WI · Accident · No injuries · Limited investigation · Final report · Jan 30, 1990 · N117M · Substantial damage
  > The pilot-in-command failed to ensure that the engine cowling latches were properly secured prior to departing on the maintenance test flight; the cowling came loose during flight, and contacted the main rotor blades before it separated from the helicopter.
- [NTSB CHI90LA072](https://openairdocs.org/ntsb/CHI90LA072.md): Beech E18S · Oak Creek, WI · Accident · No injuries · Limited investigation · Final report · Jan 25, 1990 · N48K · Substantial damage
  > Improper planning/decision by the pilot. Factors related to the accident were: the adverse weather conditions, accumulation of structural and/or induction ice, and dark night.
- [NTSB CHI90FA066](https://openairdocs.org/ntsb/CHI90FA066.md): Cessna 402A · Mosinee, WI · Accident · Serious injuries · Field investigation · Final report · Jan 17, 1990 · N4532Q · Destroyed
  > The pilot disregarding the published decision height and not performing a missed approach.
- [NTSB CHI90FA065](https://openairdocs.org/ntsb/CHI90FA065.md): Cessna 402B · Appleton, WI · Accident · 1 fatal · Field investigation · Final report · Jan 17, 1990 · N87163 · Destroyed
  > The pilot's decision to continue flight into known adverse weather conditions resulting in a windshear encounter with insufficient altitude for recovery. The existing adverse weather conditions were factors.

## 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") = 1990
  AND c."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?state=WI&year=1990

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