# NTSB investigations, 2004, 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 CHI05FA048](https://openairdocs.org/ntsb/CHI05FA048.md): Beech S35 · Herman, WI · Accident · 2 fatal · Field investigation · Final report · Dec 25, 2004 · N5631K · Substantial damage
  > The installation of the improper cylinder base packing seals by maintenance personnel resulting in the loss of lubriation and subsequent failure of the number four connecting rod/bearing. A factor associated with the accident was the trees that the airplane…
- [NTSB CHI05CA032](https://openairdocs.org/ntsb/CHI05CA032.md): Olson Sonex · Oconomowoc, WI · Accident · Serious injuries · Data collection · Final report · Nov 21, 2004 · N478SX · Substantial damage
  > The loss of engine power due to a fatigue fracture of the crankshaft. An additional cause to the accident was the pilot/builder's failure to verify the dimensions of the shrink-fit crankshaft components prior reassembling the engine. A factor to the accident…
- [NTSB CHI05LA028](https://openairdocs.org/ntsb/CHI05LA028.md): Saab-Scania 340B · Milwaukee, WI · Accident · Serious injuries · Limited investigation · Final report · Nov 14, 2004 · N305CE · No damage
  > Failure of the ramp employee to maintain clearance to the rotating propeller resulting in inadvertent contact with a propeller blade.
- [NTSB CHI05FA016](https://openairdocs.org/ntsb/CHI05FA016.md): Cessna P210N · Wautoma, WI · Accident · 2 fatal · Field investigation · Final report · Oct 26, 2004 · N5485W · Destroyed
  > The pilot not maintaining airplane control during cruise flight in instrument meteorological conditions after reporting a loss of gyros leading to his exceeding the design load limits of the wings. Factors were the clouds, the deteriorated vacuum manifold…
- [NTSB CHI05CA006](https://openairdocs.org/ntsb/CHI05CA006.md): Piper PA-28-160 · Altoona, WI · Accident · No injuries · Data collection · Final report · Oct 18, 2004 · N5520W · Substantial damage
  > The pilot's inadequate fuel management leading to the fuel starvation in the left tank during the flight's descent. A factor was the impacted power line.
- [NTSB CHI04FA290](https://openairdocs.org/ntsb/CHI04FA290.md): Beech B95A · Burlington, WI · Accident · 3 fatal · Field investigation · Final report · Sep 30, 2004 · N1703Y · Destroyed
  > The improper maintenance of the fuel servo resulting in a loose adjustment nut and subsequent failure of the fuel injection servo which led to a complete loss of power on the right engine. Other causes were the pilot's failure to obtain or maintain minimum…
- [NTSB CHI04LA265](https://openairdocs.org/ntsb/CHI04LA265.md): Kenny Mariner-MF Boat · Eagle River, WI · Accident · Serious injuries · Limited investigation · Final report · Sep 21, 2004 · N744PK · Substantial damage
  > The pilot's inability to maintain control of the aircraft during flight for undetermined reasons.
- [NTSB CHI04LA256](https://openairdocs.org/ntsb/CHI04LA256.md): Claxton S-12 · Oconomowoc, WI · Accident · 1 fatal · Limited investigation · Final report · Sep 12, 2004 · UNREG · Destroyed
  > The loss of engine power due to the seizure of the pistons and the pilot's failure to maintain airspeed which resulted in an inadvertent stall. The previous damage to the pistons due to earlier seizure occurrences was a factor.
- [NTSB CHI04LA253](https://openairdocs.org/ntsb/CHI04LA253.md): Williams Glastar GS-1 · Hayward, WI · Accident · Serious injuries · Limited investigation · Final report · Sep 10, 2004 · N501YR · Substantial damage
  > The pilot's failure to adequately compensate for the wind conditions which resulted in a loss of aircraft control. A factor associated with the accident was the gusty wind condition.
- [NTSB CHI04FA255](https://openairdocs.org/ntsb/CHI04FA255.md): Cirrus Design SR-22 · Park Falls, WI · Accident · 1 fatal · Field investigation · Final report · Sep 10, 2004 · N1223S · Destroyed
  > The flightcrew's failure to maintain airspeed which resulted in an inadvertent stall and subsequent impact with water during approach. The low altitude was a factor in the accident.
- [NTSB CHI04CA250](https://openairdocs.org/ntsb/CHI04CA250.md): Piper PA-32-301 · Crivitz, WI · Accident · No injuries · Data collection · Final report · Sep 2, 2004 · N8173J · Substantial damage
  > The proper touchdown point not attained by the pilot during landing. The road and tailwind were contributing factors.
- [NTSB CHI04LA243](https://openairdocs.org/ntsb/CHI04LA243.md): Boeing A75 · Wisconsin Rapid, WI · Accident · 1 fatal · Limited investigation · Final report · Aug 28, 2004 · N86600 · Substantial damage
  > The pilot's improper in-flight decision when he decided to fly at a low altitude over the river and failed to maintain clearance from the power lines. A factor was the wires.
- [NTSB CHI04FA223](https://openairdocs.org/ntsb/CHI04FA223.md): Cessna 172L · Webster, WI · Accident · 1 fatal · Field investigation · Final report · Aug 12, 2004 · N3599F · Destroyed
  > The high velocity impact with terrain for undetermined reasons.
- [NTSB CHI04FA214](https://openairdocs.org/ntsb/CHI04FA214.md): Eurocopter France EC130 B4 · Prairie du Sac, WI · Accident · 2 fatal · Field investigation · Final report · Aug 7, 2004 · N450CM · Destroyed
  > The pilot's intentional low-level flight toward the lake and his failure to maintain clearance from the static wire on power transmission lines. Contributing factors were the separation of the Fenestron (tail rotor) assembly from the tail boom as a result of…
- [NTSB CHI04FA203](https://openairdocs.org/ntsb/CHI04FA203.md): Knoepflein Lancair Legacy 2000 · Madison, WI · Accident · 1 fatal · Field investigation · Final report · Aug 1, 2004 · N98SN · Destroyed
  > A loss of engine power due to high engine temperatures which resulted in a failure of the number three piston, the pilot's continued operation of the airplane with known high temperature problems, the pilot's poor inflight planning, and the pilot's failure to…
- [NTSB CHI04CA219](https://openairdocs.org/ntsb/CHI04CA219.md): Lake LA4-200 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Aug 1, 2004 · N1056L · Substantial damage
  > The unsuitable rough water conditions encountered during the attempted water takeoff.
- [NTSB CHI04CA211](https://openairdocs.org/ntsb/CHI04CA211.md): Stamsta Wittman Tailwind W10 · Waunakee, WI · Accident · No injuries · Data collection · Final report · Aug 1, 2004 · N917WT · Substantial damage
  > The pilot's failure to maintain proper airspeed during final approach, which resulted in the inadvertent stall/mush at a low altitude and subsequent hard landing. A factor to the accident was the pilot's unsuccessful remedial action to the encountered…
- [NTSB CHI04CA191](https://openairdocs.org/ntsb/CHI04CA191.md): Aerostar RX-7 · Wausau, WI · Accident · Serious injuries · Data collection · Final report · Jul 25, 2004 · N7144Y · No damage
  > The pilot's inability to compensation for the turbulence and wind conditions. Contributing factors were the variable winds and the turbulence.
- [NTSB CHI04CA189](https://openairdocs.org/ntsb/CHI04CA189.md): Luscombe 8A · Merrill, WI · Accident · Minor injuries · Data collection · Final report · Jul 21, 2004 · N45628 · Substantial damage
  > The dual student's failure to maintain directional control during the initial climb after takeoff and the flight instructor's delayed remedial action. A contributing factor was that all available runway was not used for takeoff due to the touch-and-go…
- [NTSB CHI04IA178](https://openairdocs.org/ntsb/CHI04IA178.md): Beech 1900D · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Jul 6, 2004 · N87SK · Minor damage
  > The fatigue fracture of the left main landing gear during landing roll.
- [NTSB CHI04CA174](https://openairdocs.org/ntsb/CHI04CA174.md): Cessna 182N · Lancaster, WI · Accident · No injuries · Data collection · Final report · Jul 5, 2004 · N92422 · Substantial damage
  > The pilot's inadequate compensation for the gusty winds and his improper flare. The wind gusts were a contributing factor.
- [NTSB CHI04LA167](https://openairdocs.org/ntsb/CHI04LA167.md): Beech 200 · Green Bay, WI · Accident · No injuries · Limited investigation · Final report · Jun 30, 2004 · N432FA · Substantial damage
  > The loss of engine power after takeoff for an undetermined reason.
- [NTSB CHI04CA168](https://openairdocs.org/ntsb/CHI04CA168.md): Peck Vans RV-4 · Palmyra, WI · Accident · No injuries · Data collection · Final report · Jun 30, 2004 · N43MP · Substantial damage
  > The pilot's failure to maintain proper airspeed resulting in the inadvertent stall during the go-around. The overload failure of the left main landing gear was a contributing factor.
- [NTSB CHI04CA150](https://openairdocs.org/ntsb/CHI04CA150.md): Maule MX7235 · Waukesha, WI · Accident · No injuries · Data collection · Final report · Jun 13, 2004 · N5664R · Substantial damage
  > The pilot failed to maintain directional control and his inadequate compensation for wind conditions. Factors associated with the accident were the gusty crosswind and the concrete culvert that the airplane contacted.
- [NTSB CHI04CA138](https://openairdocs.org/ntsb/CHI04CA138.md): Merkel Acro Sport II · Beloit, WI · Accident · No injuries · Data collection · Final report · Jun 5, 2004 · N796DM · Substantial damage
  > Inaccurate fuel consumption calculations which resulted in fuel exhaustion. Factors associated with the accident were the pilot's continued flight with an inoperable fuel quantity indicator and the wires which the airplane contacted during the forced landing.
- [NTSB CHI04LA147](https://openairdocs.org/ntsb/CHI04LA147.md): North American T-28C · Manitowoc, WI · Accident · No injuries · Limited investigation · Final report · Jun 4, 2004 · N404DK · Substantial damage
  > Failure of the number 4 piston articulating rod resulting in a complete loss of engine power during initial climb. The ditch was a contributing factor.
- [NTSB CHI04CA136](https://openairdocs.org/ntsb/CHI04CA136.md): Cessna 172P · Milwaukee, WI · Accident · No injuries · Data collection · Final report · Jun 4, 2004 · N50923 · Substantial damage
  > The CFI failed to maintain adequate airspeed during the go-around which resulted in an inadvertent stall.
- [NTSB CHI04LA128](https://openairdocs.org/ntsb/CHI04LA128.md): North American P-51C · Hager City, WI · Accident · 1 fatal · Limited investigation · Final report · May 29, 2004 · N61429 · Substantial damage
  > The improper installation of the camshaft drive gear assembly which resulted in the retaining nut backing off allowing the drive gear to move up the shaft. A factor associated with the accident was the low altitude at which the power loss occurred and the…
- [NTSB CHI04CA118](https://openairdocs.org/ntsb/CHI04CA118.md): Piper PA-12 · Hartford, WI · Accident · No injuries · Data collection · Final report · May 9, 2004 · N2368M · Substantial damage
  > The loss of engine power for undetermined reasons. A factor to the accident was the soft terrain encountered during the forced landing.
- [NTSB CHI04CA116](https://openairdocs.org/ntsb/CHI04CA116.md): Robinson R22 Beta · Genesee Depot, WI · Accident · No injuries · Data collection · Final report · May 8, 2004 · N215WW · Substantial damage
  > The pilot's failure to maintain proper rotor RPM during the hover landing and his inadequate remedial action, which resulted in the hard landing.
- [NTSB CHI04LA104](https://openairdocs.org/ntsb/CHI04LA104.md): Cessna 172M · New Munster, WI · Accident · No injuries · Limited investigation · Final report · Apr 10, 2004 · N73213 · 2 aircraft · Substantial damage
  > Visual lookout not maintained by the pilots of both airplanes.
- [NTSB CHI04CA094](https://openairdocs.org/ntsb/CHI04CA094.md): Cessna 180 · Long Lake, WI · Accident · No injuries · Data collection · Final report · Mar 31, 2004 · N223WH · Substantial damage
  > The pilot flared improperly and failed to maintain directional control during landing.
- [NTSB CHI04LA084](https://openairdocs.org/ntsb/CHI04LA084.md): Boeing 757-200 · Janesville, WI · Accident · Serious injuries · Limited investigation · Final report · Mar 1, 2004 · N516UA · No damage
  > The unexpected encounter with convective turbulence.
- [NTSB CHI04LA079](https://openairdocs.org/ntsb/CHI04LA079.md): Robinson R44 · Burlington, WI · Accident · No injuries · Limited investigation · Final report · Feb 28, 2004 · N7184G · Substantial damage
  > The pilot's inadequate visual lookout and his failure to obtain/maintain clearance from the transmission wire during the takeoff. Factors contributing to the accident were the transmission wire and the pole.
- [NTSB CHI04LA075](https://openairdocs.org/ntsb/CHI04LA075.md): Cessna 120 · Merrill, WI · Accident · No injuries · Limited investigation · Final report · Feb 21, 2004 · N73034 · Substantial damage
  > The pilot's selection of unsuitable terrain to conduct a landing. Factors were the reported flat light conditions and the uneven terrain.
- [NTSB CHI04LA083](https://openairdocs.org/ntsb/CHI04LA083.md): Cessna 195 · Manitowoc, WI · Accident · No injuries · Limited investigation · Final report · Feb 19, 2004 · N4351V · Minor damage
  > The Cessna 195 pilot's failure to maintain clearance from the Cessna 177RG while taxiing to the ramp after landing. A contributing factor was the restricted forward visibility (blind spot) of the Cessna 195 due to the engine cowling. An additional factor was…
- [NTSB CHI04LA064](https://openairdocs.org/ntsb/CHI04LA064.md): Piper PA-28R-200 · Lone Rock, WI · Accident · Minor injuries · Limited investigation · Final report · Feb 7, 2004 · N5039S · Substantial damage
  > The pilot's continued flight into icing conditions resulting in ice accretion on the wing and his failure to maintain airspeed resulting in a stall.

## 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") = 2004
  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=2004

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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.