# NTSB investigations, 1998, 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 CHI99LA068](https://openairdocs.org/ntsb/CHI99LA068.md): Cessna P210N · Eau Clare, WI · Accident · No injuries · Limited investigation · Final report · Dec 31, 1998 · N731YY · Substantial damage > the delayed gear extension by the pilot. Contributing factors were the checklist not used by the pilot, the inoperative gear warning, and the maintenance replacement of the throttle control/gear warning interconnect cable not performed by company/operator… - [NTSB CHI99LA060](https://openairdocs.org/ntsb/CHI99LA060.md): Cessna 152 · Appleton, WI · Accident · No injuries · Limited investigation · Final report · Dec 26, 1998 · N6136Q · Substantial damage > The pilot's failure to maintain directional control. A related factor was the crosswind. - [NTSB CHI99LA049](https://openairdocs.org/ntsb/CHI99LA049.md): Cessna 150 · East Troy, WI · Accident · No injuries · Limited investigation · Final report · Dec 6, 1998 · N63563 · Substantial damage > the student pilot's failure to maintain directional control of the airplane. Factors associated with the accident were the crosswind, and the ditch. - [NTSB CHI99LA048](https://openairdocs.org/ntsb/CHI99LA048.md): Bellanca 8GCBC · Burlington, WI · Accident · No injuries · Limited investigation · Final report · Dec 4, 1998 · N395AC · Substantial damage > Carburetor ice, the pilot's inadequate pre-flight planning/preparation resulting in his flight into poor weather conditions, and the pilot's improper use of carburetor heat. Factors contributing to this accident were the carburetor icing conditions, the… - [NTSB CHI99FA042](https://openairdocs.org/ntsb/CHI99FA042.md): Cessna 172F · Coleman, WI · Accident · 2 fatal · Field investigation · Final report · Nov 29, 1998 · N72RE · Destroyed > pilot's failure to maintain clearance from the trees and his intentional flight into IMC conditions. Factors contributing to this accident were the pilot's lack of instrument certification, his becoming lost in the poor weather, his inadequate preparation for… - [NTSB CHI99LA016](https://openairdocs.org/ntsb/CHI99LA016.md): Cessna 310I · Janesville, WI · Accident · Minor injuries · Limited investigation · Final report · Nov 2, 1998 · N8069M · Substantial damage > The pilot's inadequate preflight inspection in which he failed to remove the tow bar from the nose gear. Also causal was his misjudgment of distance and altitude from the runway which resulted in both his premature shutdown of the engines and an undershoot of… - [NTSB CHI99LA011](https://openairdocs.org/ntsb/CHI99LA011.md): Cessna 182Q · Pound, WI · Accident · No injuries · Limited investigation · Final report · Oct 22, 1998 · N759CT · Substantial damage > the pilot misjudged the proper touchdown point and subsequently landed short of the runway. Factors associated with the accident were the haze, sunglare, the lack of visual perception, and the uphill terrain on which the airplane touched down. - [NTSB CHI99LA005](https://openairdocs.org/ntsb/CHI99LA005.md): Piper J3C-65 · New Holstein, WI · Accident · Serious injuries · Limited investigation · Final report · Oct 11, 1998 · N70880 · Substantial damage > the pilot-in-command's intentional low altitude maneuver and his ostentatious display. A factor was his allowing the airplane to enter an inadvertent stall. - [NTSB CHI99LA007](https://openairdocs.org/ntsb/CHI99LA007.md): Bellanca 8KCAB · Superior, WI · Accident · 1 fatal · Limited investigation · Final report · Oct 9, 1998 · N924TA · Destroyed > the pilot not maintaining clearance with the terrain, and his improper decision to enter maneuvers too close to the terrain. Factors contributing to this accident were the aerobatic maneuvers, the trees and the berm. - [NTSB CHI99LA002](https://openairdocs.org/ntsb/CHI99LA002.md): Cessna C-336 · Sheboygan, WI · Accident · No injuries · Limited investigation · Final report · Oct 4, 1998 · N3884U · Substantial damage > The pilot's improper flare and improper recovery from a bounced landing. - [NTSB CHI98LA367](https://openairdocs.org/ntsb/CHI98LA367.md): Piper PA-34-220T · Schofield, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 26, 1998 · N900JH · Substantial damage > The inadvertent deactivation of the fuel selector and the emergency procedure not followed by the pilot-in-command. The tree was a contributing factor. - [NTSB CHI98LA360](https://openairdocs.org/ntsb/CHI98LA360.md): Cessna P210N · Amery, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 23, 1998 · N5245A · Substantial damage > A loss of engine power due to fatigue failure of the crankshaft from frictional heating for undetermined reasons. A related factor was the unsuitable terrain. - [NTSB CHI98LA357](https://openairdocs.org/ntsb/CHI98LA357.md): Cessna 182K · Baldwin, WI · Accident · No injuries · Limited investigation · Final report · Sep 20, 1998 · N2689Q · Substantial damage > The pilot's inadequate preflight planning and preparation, and his failure to stop on the wet, grassy runway. A related factor was the wet grass. - [NTSB CHI98LA350](https://openairdocs.org/ntsb/CHI98LA350.md): Piper PA-22-108 · Janesville, WI · Accident · No injuries · Limited investigation · Final report · Sep 17, 1998 · N4749Z · Substantial damage > the pilot's failure to land the airplane at a proper touchdown point on the runway. A factor was the excessive rate of descent which developed on final approach. - [NTSB CHI98LA339](https://openairdocs.org/ntsb/CHI98LA339.md): Enstrom 480 · Green Bay, WI · Accident · No injuries · Limited investigation · Final report · Sep 16, 1998 · N142CC · Substantial damage > the pilot's failure to maintain adequate rotor rpm during a practice autorotation. - [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 CHI98FA356](https://openairdocs.org/ntsb/CHI98FA356.md): Cessna 310R · Seymour Twp., WI · Accident · 2 fatal · Field investigation · Final report · Sep 1, 1998 · N5056J · 2 aircraft · Destroyed > the pilots of both airplanes not maintaining visual separation from the other airplane. - [NTSB CHI98FA343](https://openairdocs.org/ntsb/CHI98FA343.md): Piper PA-22-150 · Beaver Dam, WI · Accident · 2 fatal · Field investigation · Final report · Aug 28, 1998 · N2931Z · Destroyed > The continued flight into adverse weather conditions and aircraft control not maintained by the pilot-in-command. Contributing factors were the improper preflight planning/preparation and lack of certification by the pilot-in-command in addition to the… - [NTSB CHI98LA314](https://openairdocs.org/ntsb/CHI98LA314.md): Valentin Taifun 17E · Lake Geneva, WI · Accident · No injuries · Limited investigation · Final report · Aug 15, 1998 · N17NT · Substantial damage > the pilot's failure to maintain directional control and obtain proper climb rate during initial climb after takeoff. A factor was trees. - [NTSB CHI98LA320](https://openairdocs.org/ntsb/CHI98LA320.md): Piper PA-18-150 · Lac Du Flambeau, WI · Accident · No injuries · Limited investigation · Final report · Aug 9, 1998 · N9044D · Substantial damage > the pilot's failure to maintain adequate airspeed and the subsequent inadvertant stall. - [NTSB CHI98FA344](https://openairdocs.org/ntsb/CHI98FA344.md): Cessna A185F · Phillips, WI · Accident · 2 fatal · Field investigation · Final report · Aug 4, 1998 · N888KS · Destroyed > The pilot's failure to maintain adequate altitude/clearance with trees. Contributing factors were fog, rain showers, and the trees. - [NTSB CHI98FA288](https://openairdocs.org/ntsb/CHI98FA288.md): Hispano Aviacion A10B-37 · Oshkosh, WI · Accident · 1 fatal · Field investigation · Final report · Aug 2, 1998 · N2741P · Destroyed > the pilot's failure to maintain adequate altitude which resulted in in-flight collision with trees and subsequent compressor stall for undetermined reasons. - [NTSB CHI98LA297](https://openairdocs.org/ntsb/CHI98LA297.md): Cessna 180 · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Aug 1, 1998 · N111WF · 2 aircraft · Substantial damage > the pilot of the other airplane did not maintain proper clearance. - [NTSB CHI98FA287](https://openairdocs.org/ntsb/CHI98FA287.md): Navion A · Coloma, WI · Accident · 1 fatal · Field investigation · Final report · Aug 1, 1998 · N8991H · Destroyed > Failure of the pilot to maintain proper altitude, and his failure to maintain adequate visual lookout to see and avoid obstructions. The transmission wire was a contributing factor. - [NTSB CHI98FA286](https://openairdocs.org/ntsb/CHI98FA286.md): Monocoupe 70 · New Holstein, WI · Accident · Minor injuries · Field investigation · Final report · Jul 31, 1998 · NC6740 · Substantial damage > The pilot's failure to use carburetor heat in weather conditions conducive to carburetor icing. - [NTSB CHI98LA283](https://openairdocs.org/ntsb/CHI98LA283.md): Aero Commander 685 · Middleton, WI · Accident · No injuries · Limited investigation · Final report · Jul 29, 1998 · N414C · Substantial damage > The fuel starvation of the aircraft in addition to the improper aircraft preflight and premature gear extension by the pilot-in-command. The blocked fuel vent system is a contributing factor. - [NTSB CHI98LA276](https://openairdocs.org/ntsb/CHI98LA276.md): Beech F33A · Delavan, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 25, 1998 · N350NW · Substantial damage > the pilot's failure to maintain aircraft control during the takeoff roll. Factors contributing to this accident were the pilot's inadequate preflight, his operation of an airplane with a known deficiency, low air pressure on both main tires, the snow fence,… - [NTSB CHI98LA270](https://openairdocs.org/ntsb/CHI98LA270.md): Cessna 175 · Sheboygan, WI · Accident · Serious injuries · Limited investigation · Final report · Jul 23, 1998 · N7199M · Substantial damage > The pilot's inadequate fuel management which led to fuel exhaustion. - [NTSB CHI98LA261](https://openairdocs.org/ntsb/CHI98LA261.md): Cessna 182A · Springbrook, WI · Accident · No injuries · Limited investigation · Final report · Jul 17, 1998 · N2139G · Substantial damage > The pilot's improper attitude and excessive sink rate during landing. The terrain condition was a contributing factor in the accident. - [NTSB CHI98LA256](https://openairdocs.org/ntsb/CHI98LA256.md): Cessna 177 · Cassville, WI · Accident · No injuries · Limited investigation · Final report · Jul 16, 1998 · N3461T · Destroyed > an undetermined event which resulted in engine failure on landing roll out during attempted restart fuel ignited and an undetermined event in the airplane's fuel system which resulted in a fire. - [NTSB CHI98LA228](https://openairdocs.org/ntsb/CHI98LA228.md): Cessna 172N · Stone Lake, WI · Accident · No injuries · Limited investigation · Final report · Jun 29, 1998 · N6596D · Substantial damage > the lack of effective braking due to hydroplaning. Contributing factors to the accident were the trees off the end of the runway that made a go-around not possible and the ditch off the end of the runway. - [NTSB CHI98LA227](https://openairdocs.org/ntsb/CHI98LA227.md): Commonwealth 185 · Oregon, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 1998 · N92997 · Substantial damage > the improper adjustment of the carburetor by an unqualified person. Factors to the accident were the annual inspection not being complied with and the lack of recent experience of the pilot. - [NTSB CHI98LA226](https://openairdocs.org/ntsb/CHI98LA226.md): Cessna 150H · Osceola, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 1998 · N50433 · Substantial damage > the student pilot's incomplete preflight, and the instructor pilot's inadequate supervision of the student's preflight. Factors were the fuel contaminated with water, and the roadway encountered during the forced landing rollout. - [NTSB CHI98LA213](https://openairdocs.org/ntsb/CHI98LA213.md): Cessna 310N · Janesville, WI · Accident · No injuries · Limited investigation · Final report · Jun 20, 1998 · N5030Q · Substantial damage > other maintenance personnel not installing nose landing gear door linkage. Factors were the unsecured landing gear door, the nose landing gear becoming jammed and the gear extension not possible by the pilot. - [NTSB CHI98LA207](https://openairdocs.org/ntsb/CHI98LA207.md): Lake LA4-200 · Peshtigo, WI · Accident · No injuries · Limited investigation · Final report · Jun 17, 1998 · N80026 · Substantial damage > the pilot misjudged the flare and inadvertently dragged the right sponson in the water. A factor was the pilot's lack of experience in the make and model aircraft. - [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 CHI98FA153](https://openairdocs.org/ntsb/CHI98FA153.md): Commander 114-B · Lagrange, WI · Accident · 4 fatal · Field investigation · Final report · May 15, 1998 · N6059C · Destroyed > the pilot not maintaining aircraft control during cruise flight and exceeding the airplane's design stress limits. Factors in this accident was the pilot's lack of total experience in the airplane and the clouds. - [NTSB CHI98IA136](https://openairdocs.org/ntsb/CHI98IA136.md): Robinson R22 Beta · Franklin, WI · Incident · No injuries · Incident investigation · Final report · Apr 27, 1998 · N8331F · Minor damage > The mechanic's failure to follow the manufacturer's maintenance rebuilding instructions. - [NTSB CHI98LA134](https://openairdocs.org/ntsb/CHI98LA134.md): Cessna 172 · Eagle River, WI · Accident · No injuries · Limited investigation · Final report · Apr 25, 1998 · N79006 · Substantial damage > the pilot failed to compensate for the wind conditions, improperly executed a go-around when he raised the flaps, and failed to maintain obstacle clearance with the trees. - [NTSB CHI98FA123](https://openairdocs.org/ntsb/CHI98FA123.md): Cessna 180J · Ashland, WI · Accident · 1 fatal · Field investigation · Final report · Apr 15, 1998 · N828CE · Destroyed > the pilot failing to maintain separation from the trees. Factors contributing to this accident were the trees and the pilot being too low in altitude. - [NTSB CHI98LA105](https://openairdocs.org/ntsb/CHI98LA105.md): Aero Commander 680FLP · Fond Du Lac, WI · Accident · Minor injuries · Limited investigation · Final report · Mar 13, 1998 · N777MX · Substantial damage > the pilot's misjudged weather evaluation. Factors were turbulence, the pilot's inability to attain a proper climb rate, unsuitable terrain encountered in the landing area, and crops. - [NTSB CHI98LA088](https://openairdocs.org/ntsb/CHI98LA088.md): Cessna 310Q · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Jan 26, 1998 · N8189Q · Substantial damage > the pilot's failure to lower the landing gear and to properly align the airplane with the runway. Factors associated with the accident were: the inoperative gear warning, degraded aircraft performance, the pilot's diverted attention, the pilot's decision to… - [NTSB CHI98LA083](https://openairdocs.org/ntsb/CHI98LA083.md): Nerstrom-Tailwind W-8 · Lodi, WI · Accident · Minor injuries · Limited investigation · Final report · Jan 20, 1998 · N12038 · Destroyed > the pilot's failure to maintain a proper altitude due to the whiteout conditions. Factors associated with the accident were the low pass performed by the pilot and the visual illusion created by the whiteout conditions. ## 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") = 1998 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=1998 --- 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.