# NTSB investigations, WI: Miscellaneous/other 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 CHI03LA136](https://openairdocs.org/ntsb/CHI03LA136.md): Piper PA-11 · Minocqua, WI · Accident · No injuries · Limited investigation · Final report · May 17, 2003 · N4711U · Substantial damage > The pilot's failure to attain a proper climb rate during takeoff. A factor to the accident was the tree. - [NTSB CHI02FA093](https://openairdocs.org/ntsb/CHI02FA093.md): Cessna 208B · Alma, WI · Accident · 1 fatal · Field investigation · Final report · Mar 15, 2002 · N228PA · Substantial damage > The pilot not removing the ice contamination from the airplane prior to departure and the pilot intentionally flying into known severe icing conditions, resulting in the aircraft not being able to maintain altitude/clearance from the terrain. Factors to the… - [NTSB CHI01LA239](https://openairdocs.org/ntsb/CHI01LA239.md): Anderson Revelation · Wautoma, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 2001 · N6116S · Substantial damage > The pilot's failure to maintain airspeed, resulting in a stall. An inadequate pitch setting of the propeller is a contributing factor. - [NTSB CHI00LA268](https://openairdocs.org/ntsb/CHI00LA268.md): Boeing 777-223 · Baraboo, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 22, 2000 · N785AN · No damage > the unexpected turbulence encountered by the airplane. - [NTSB CHI98FA349](https://openairdocs.org/ntsb/CHI98FA349.md): Beech 58 · Oakdale, WI · Accident · 3 fatal · Field investigation · Final report · Sep 16, 1998 · N4574Q · Destroyed > The installation of the door seal inflation system by company personnel. An additional cause was the emergency procedures not followed by the pilot-in-command. A contributing factor was the trees. - [NTSB CHI98LA176](https://openairdocs.org/ntsb/CHI98LA176.md): Waters Vortex · Monroe, WI · Accident · Minor injuries · Limited investigation · Final report · May 27, 1998 · N1025Y · Substantial damage > the pilot's failure to maintain rotor RPM. A factor associated with the accident was the soft terrain on which the gyrocopter touched down. - [NTSB CHI98LA171](https://openairdocs.org/ntsb/CHI98LA171.md): Stemme S10V · Plymouth, WI · Accident · No injuries · Limited investigation · Final report · May 19, 1998 · N97MT · Substantial damage > the improper in-flight decision of the pilot in command to initiate a turn at a close proximity to the ground. Factors to the accident were the starting procedures not being followed and the inadequate altitude to initiate the engine restart. - [NTSB CHI97LA216](https://openairdocs.org/ntsb/CHI97LA216.md): Schweizer SGS 2-8 · Menominee Falls, WI · Accident · Serious injuries · Limited investigation · Final report · Jul 20, 1997 · N79106 · Substantial damage > the slippage of the glider launch equipment (winch). Factors were the pilot's encounter with a stall/spin and the lack of possibility for remedial action to avoid impact with the terrain. - [NTSB CHI94IA095](https://openairdocs.org/ntsb/CHI94IA095.md): British Aerospace ATP · Mosinee, WI · Incident · Minor injuries · Incident investigation · Final report · Feb 26, 1994 · N854AW · Minor damage > the inadequate design of the PBSI electrical switch(es), and the operator's failure to expeditiously implement corrective Service Bulletins. - [NTSB CHI93LA327](https://openairdocs.org/ntsb/CHI93LA327.md): British Aerospace ATP · Green Bay, WI · Accident · Serious injuries · Limited investigation · Final report · May 7, 1993 · N852AW · No damage > the passenger's loss of footing (miscellaneous). - [NTSB CHI93LA045](https://openairdocs.org/ntsb/CHI93LA045.md): Beech 77 · Milwaukee, WI · Accident · Minor injuries · Limited investigation · Final report · Dec 1, 1992 · N6761E · Substantial damage > The pilot's failure to maintain a proper altitude. - [NTSB CHI91LA299](https://openairdocs.org/ntsb/CHI91LA299.md): Piper PA-23-250 · Boscobel, WI · Accident · No injuries · Limited investigation · Final report · Sep 20, 1991 · N915PM · Substantial damage > Improper remedial action by the pilot-in-command (PIC), and inadequate monitoring by the designated pilot examiner (DPE) during a simulated emergency procedure. Factors related to the accident were: the loss of power in one engine due to an undetermined… - [NTSB CHI89LA176](https://openairdocs.org/ntsb/CHI89LA176.md): Piper PA-23-160 · Eau Claire, WI · Accident · No injuries · Limited investigation · Final report · Aug 27, 1989 · N8886 · Substantial damage > Inadvertent retraction of the landing gear by the pilot. His habit interference and lack of experience in the type of aircraft were contributing factors. - [NTSB CHI89LA075](https://openairdocs.org/ntsb/CHI89LA075.md): Bellanca 17-30A · Watertown, WI · Accident · No injuries · Limited investigation · Final report · Apr 24, 1989 · N39868 · Substantial damage > The pilot's improper use of brakes and throttle. A contributing factor was the parked aircraft which was nearby. - [NTSB CHI87LA086](https://openairdocs.org/ntsb/CHI87LA086.md): Cessna 172RG · Camp Douglas, WI · Accident · 1 fatal · Limited investigation · Final report · Feb 20, 1987 · N4601V · Substantial damage > The passenger rprtd that about 5 min after takeoff, the plt became incapacitated & was no longer able to maintain control of the acft. The non-certificated passenger assumed control. With the assistance (instructions) from an airborne flt instructor & an… - [NTSB CHI86FEP09](https://openairdocs.org/ntsb/CHI86FEP09.md): Piper PA-32R-300 · Wisconsin Rapid, WI · Accident · 1 fatal · Final report · Sep 20, 1986 · N4909F · Destroyed > ATC had cleared the aircraft for an approach to an airport with several nonprecision instrument approaches and to maintain an altitude until established on a segment of an approach to that airport. Shortly after that time witnesses located 4.5 miles northwest… - [NTSB CHI85FEP01](https://openairdocs.org/ntsb/CHI85FEP01.md): Beech 35-C33 · Middleton, WI · Accident · Minor injuries · Final report · May 23, 1985 · N6144V · Substantial damage > At lift-off during the departure, the plt noticed oil spray on the windshield. He initiated an aborted takeoff by retarding the throttle, then realized there was insufficient rwy remaining, so he applied full throttle again. However, the eng did not respond… - [NTSB CHI83LA404](https://openairdocs.org/ntsb/CHI83LA404.md): Mockrud Volksplane · Cottage Grove, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 31, 1983 · N4244R · Destroyed > The owner of the new home built acft had given the plt permission to taxi the plane, but not to takeoff. The plt stated that he inadvertently became airborne while making a high speed taxi check, then the eng lost power. A witness stated that the acft became… ## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 430) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=430&state=WI --- 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.