# NTSB investigations: Pratt & Whitney R-985 series, 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 CEN21LA333](https://openairdocs.org/ntsb/CEN21LA333.md): Boeing E75 · Baraboo, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 23, 2021 · N51CF · Substantial damage
  > The pilot’s failure to maintain clearance from the fence while on final approach.
- [NTSB CEN18LA360](https://openairdocs.org/ntsb/CEN18LA360.md): Stearman A75N1(PT17) · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Aug 31, 2018 · N64604 · Substantial damage
  > The failed retaining bolt and cracked backing plate, which resulted in a shift of the brake lining to contact the brake drum and a subsequent wheel lock when the brakes were applied.
- [NTSB CEN15LA399](https://openairdocs.org/ntsb/CEN15LA399.md): Weatherly 620B · Hancock, WI · Accident · 1 fatal · Limited investigation · Final report · Aug 26, 2015 · N2005C · Destroyed
  > The in-flight failure of the left wing lower forward attach point under normal loading conditions due to corrosion and fatigue cracking in the center section hinge brackets. Contributing to the accident was the operator's inadequate maintenance and overweight…
- [NTSB CHI03LA274](https://openairdocs.org/ntsb/CHI03LA274.md): Boeing A-75 · La Crosse, WI · Accident · No injuries · Limited investigation · Final report · Aug 20, 2003 · N806RB · Substantial damage
  > The total loss of engine power due to a fatigue fracture of the engine's crankshaft. A factor was the corn crop.
- [NTSB CHI97LA242](https://openairdocs.org/ntsb/CHI97LA242.md): Boeing B75N1 · Lone Rock, WI · Accident · No injuries · Limited investigation · Final report · Jul 30, 1997 · N75939 · Substantial damage
  > a locked right brake which resulted in the pilot's inability to maintain direction control of the airplane during the landing roll.
- [NTSB CHI96LA252](https://openairdocs.org/ntsb/CHI96LA252.md): Boeing A75N1 · East Troy, WI · Accident · No injuries · Limited investigation · Final report · Jul 21, 1996 · N58712 · Substantial damage
  > corrosion and fracture of the rudder control horn.
- [NTSB CHI92DEP04](https://openairdocs.org/ntsb/CHI92DEP04.md): Grumman 164A · Elkhorn, WI · Accident · Minor injuries · Final report · Aug 31, 1992 · N48635 · Destroyed
  > The pilot-in-command's inadequate compensation for wind conditions.
- [NTSB CHI91DEP12](https://openairdocs.org/ntsb/CHI91DEP12.md): Schweizer G-164-A · Elkhorn, WI · Accident · No injuries · Final report · Aug 20, 1991 · N48635 · Substantial damage
  > The pilot in command's failure to maintain adequate altitude.
- [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 CHI85LA324](https://openairdocs.org/ntsb/CHI85LA324.md): Boeing E75 · Delavan, WI · Accident · No injuries · Limited investigation · Final report · Jul 30, 1985 · N5191N · Substantial damage
  > The acft nosed over during a forced lndg after the eng quit. The plt said he ran out of fuel.
- [NTSB CHI85LA327](https://openairdocs.org/ntsb/CHI85LA327.md): Howard DGA-15P · Fond Du Lac, WI · Accident · No injuries · Limited investigation · Final report · Jul 27, 1985 · N5604V · Substantial damage
  > The plt had accurued aprx 12 hrs of flying time on the day of the accident. During the final landing the acft touched down at the rwy mid-point and bounced. The acft then struck a rwy light and veered off the rwy paved surface into soft sod. The plt attempted…
- [NTSB CHI80DEP32](https://openairdocs.org/ntsb/CHI80DEP32.md): Stearman A75-N1 · City Point, WI · Accident · No injuries · Closed · May 23, 1980 · N63111 · Substantial damage
- [NTSB CHI78FEP45](https://openairdocs.org/ntsb/CHI78FEP45.md): Snow S2C · Bancroft, WI · Accident · Minor injuries · Closed · Jul 11, 1978 · N1638S · Destroyed
- [NTSB CHI78FER01](https://openairdocs.org/ntsb/CHI78FER01.md): Beech D18S · Osceola, WI · Accident · No injuries · Closed · Oct 30, 1977 · N273C · Substantial damage
- [NTSB CHI76DEP13](https://openairdocs.org/ntsb/CHI76DEP13.md): Stearman A75N1 · Portage, WI · Accident · Minor injuries · Closed · Aug 11, 1975 · N55891 · Destroyed
- [NTSB CHI76DEP06](https://openairdocs.org/ntsb/CHI76DEP06.md): Stearman A75N1 · Alma Center, WI · Accident · No injuries · Closed · Jul 22, 1975 · N55898 · Substantial damage
- [NTSB CHI75AC060](https://openairdocs.org/ntsb/CHI75AC060.md): Beech G18S · Oshkosh, WI · Accident · No injuries · Closed · Mar 4, 1975 · N188X · Substantial damage
- [NTSB CHI75DEP24](https://openairdocs.org/ntsb/CHI75DEP24.md): Boeing A75 · Lone Rock, WI · Accident · No injuries · Closed · Sep 8, 1974 · N55898 · Substantial damage
- [NTSB CHI75FEP19](https://openairdocs.org/ntsb/CHI75FEP19.md): Boeing A75N1 · Plover, WI · Accident · 1 fatal · Closed · Sep 1, 1974 · N60334 · Destroyed
- [NTSB CHI75DEP16](https://openairdocs.org/ntsb/CHI75DEP16.md): Boeing A75N1 · Friendship, WI · Accident · No injuries · Closed · Aug 17, 1974 · N61836 · Destroyed
- [NTSB CHI74FEP49](https://openairdocs.org/ntsb/CHI74FEP49.md): Boeing A75N1 · Lone Rock, WI · Accident · No injuries · Closed · Jun 13, 1974 · N111Q · Substantial damage
- [NTSB CHI71FDJ03](https://openairdocs.org/ntsb/CHI71FDJ03.md): Beech C-18 · Waukesha, WI · Accident · Minor injuries · Closed · Jul 10, 1970 · N2391C · Substantial damage
- [NTSB CHI70A0023](https://openairdocs.org/ntsb/CHI70A0023.md): Beech D18S · Madison, WI · Accident · 1 fatal · Closed · Nov 1, 1969 · N106H · Destroyed
- [NTSB MKC70A0018](https://openairdocs.org/ntsb/MKC70A0018.md): Beech E18S · Ashland, WI · Accident · No injuries · Closed · Oct 12, 1969 · N3785B · Substantial damage
- [NTSB CHI68D0276](https://openairdocs.org/ntsb/CHI68D0276.md): Lockheed 12A · Montello, WI · Accident · No injuries · Closed · Aug 10, 1967 · N4001 · Substantial damage
- [NTSB CHI67A0101](https://openairdocs.org/ntsb/CHI67A0101.md): Beech C-45H · Janesville, WI · Accident · No injuries · Closed · Mar 3, 1967 · N9966Z · Substantial damage
- [NTSB CHI67F0189](https://openairdocs.org/ntsb/CHI67F0189.md): Beech D18S · Janesville, WI · Accident · No injuries · Closed · Sep 8, 1966 · N156NA · Substantial damage
- [NTSB UNK64X3494](https://openairdocs.org/ntsb/UNK64X3494.md): Boeing A75N1 · Delavan, WI · Accident · No injuries · Closed · Aug 20, 1964 · N63695 · Destroyed

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52008&state=WI

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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.