# NTSB investigations: Continental IO-520 series, IA

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.

Page 1 of 2 · 59 cases

## Latest cases

- [NTSB CEN26LA274](https://openairdocs.org/ntsb/CEN26LA274.md): Cessna A188B · Algona, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 29, 2026 · N731CQ · Substantial damage
  > The pilot’s failure to maintain control during a turn, which resulted in an aerodynamic stall.
- [NTSB CEN26LA271](https://openairdocs.org/ntsb/CEN26LA271.md): Beech V35 · Carroll, IA · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 24, 2026 · N3707Q · Substantial damage
  > On July 24, 2026, about 1550 central daylight time, a Beech V35 airplane, N3707Q, was substantially damaged when it was involved in an accident near Carroll, Iowa. The pilot was not injured. The flight was operated under the provisions of Title 14 Code of…
- [NTSB CEN13LA500](https://openairdocs.org/ntsb/CEN13LA500.md): Cessna 206 · Brooklyn, IA · Accident · 1 fatal · Limited investigation · Final report · Aug 16, 2013 · N2070K · Minor damage
  > The improper routing of the seatbelt, which resulted in the inadvertent deployment of the reserve parachute, and the open jump door, which allowed the passenger to be pulled from the airplane.
- [NTSB CEN12LA224](https://openairdocs.org/ntsb/CEN12LA224.md): Cessna U206B · Winterset, IA · Accident · No injuries · Limited investigation · Final report · Apr 1, 2012 · N3830G · Substantial damage
  > The loss of oil pressure to the No. 4 connecting rod journal and the subsequent loss of engine power.
- [NTSB CEN11LA513](https://openairdocs.org/ntsb/CEN11LA513.md): Cessna A188B · Mount Hamill, IA · Accident · No injuries · Limited investigation · Final report · Jul 23, 2011 · N9234R · Substantial damage
  > The loss of engine power due to fuel starvation and the pilot's inadequate fuel management.
- [NTSB CEN10FA320](https://openairdocs.org/ntsb/CEN10FA320.md): Beech A36 · Lidderdale, IA · Accident · 2 fatal · Field investigation · Final report · Jun 13, 2010 · N6036U · Destroyed
  > The pilot's decision to initiate the flight in marginal weather conditions and his loss of aircraft control.
- [NTSB CHI08CA260](https://openairdocs.org/ntsb/CHI08CA260.md): Cessna A188B · Camanche, IA · Accident · No injuries · Data collection · Final report · Aug 20, 2008 · N53243 · Substantial damage
  > The pilot took off on an unsuitable airstrip which resulted in the airplane becoming prematurely airborne with inadequate airspeed after it contacted a rise in the terrain.
- [NTSB CHI07CA285](https://openairdocs.org/ntsb/CHI07CA285.md): Navion Navion H · Atlantic, IA · Accident · No injuries · Data collection · Final report · Aug 30, 2007 · N2540T · Substantial damage
  > The pilot's improper flare and touchdown during landing resulting in overload failure of the left main landing gear. A contributing factor was the pilot's distraction due to the unlatched cabin door.
- [NTSB CHI06CA008](https://openairdocs.org/ntsb/CHI06CA008.md): Cessna 310R · Ottumwa, IA · Accident · Minor injuries · Data collection · Final report · Oct 13, 2005 · N310SK · Substantial damage
  > The pilot misjudged his altitude and airspeed while landing which resulted in the airplane stalling 20 feet above the runway. A factor associated with the accident was the pilot's execution of the approach when reported weather conditions were below the…
- [NTSB CHI03FA094](https://openairdocs.org/ntsb/CHI03FA094.md): Beech A36 · New Vienna, IA · Accident · 3 fatal · Field investigation · Final report · Mar 28, 2003 · N1636W · Destroyed
  > The improper planning/decision by the pilot to fly into forecast icing conditions with an airplane not equipped with a certified deice system. The continued flight in known icing conditions and the flight to an alternate destination not performed by the pilot…
- [NTSB CHI02FA009](https://openairdocs.org/ntsb/CHI02FA009.md): Beech 58 · Dubuque, IA · Accident · 1 fatal · Field investigation · Final report · Oct 23, 2001 · N7235R · Destroyed
  > The pilot continued flight into known adverse weather and disregarded the minimum descent altitude. Additional factors were the conditions conducive to pilot fatigue, fog, and night.
- [NTSB CHI97LA288](https://openairdocs.org/ntsb/CHI97LA288.md): Beech 35-C33A · Amana, IA · Accident · No injuries · Limited investigation · Final report · Sep 7, 1997 · N5729V · Substantial damage
  > the pilot's improper planning/decision. The fence (location) was a related factor.
- [NTSB CHI96FA146](https://openairdocs.org/ntsb/CHI96FA146.md): Cessna 421 · Bernard, IA · Accident · 3 fatal · Field investigation · Final report · Apr 29, 1996 · N341DA · Destroyed
  > the pilot's operation of the airplane with known deficiencies, subsequent loss of oil from the left engine, and the pilot's failure to maintain minimum controllable airspeed (VMC), while diverting to an alternate airport. Factors relating to the accident…
- [NTSB CHI93LA348](https://openairdocs.org/ntsb/CHI93LA348.md): Bellanca 17-30 · Blakesburg, IA · Accident · No injuries · Limited investigation · Final report · Sep 3, 1993 · N6582V · Substantial damage
  > The pilot's failure to maintain clearance with the fence post and his midjudging the airplane glidepath.
- [NTSB CHI93LA052](https://openairdocs.org/ntsb/CHI93LA052.md): Cessna 402B · Cedar Rapids, IA · Accident · Minor injuries · Limited investigation · Final report · Dec 14, 1992 · N17CH · Substantial damage
  > The pilot-in-command's failure to maintain a proper glidepath.
- [NTSB MKC89LA071](https://openairdocs.org/ntsb/MKC89LA071.md): Cessna 310 · Des Moines, IA · Accident · No injuries · Limited investigation · Final report · Mar 3, 1989 · N5119C · Substantial damage
  > The failure of the pilot to properly flare the airplane. Contributing to the accident were the weather conditions.
- [NTSB MKC89LA031](https://openairdocs.org/ntsb/MKC89LA031.md): Bellanca 17-30 · Martelle, IA · Accident · No injuries · Limited investigation · Final report · Dec 7, 1988 · N198V · Substantial damage
  > Anticipating a fuel shortage on a personal cross country flight, the plt requested the nearest airport from approach control. The nearest apt was within five miles of his destination apt so continued on course. About 15 miles from his destination, and having…
- [NTSB MKC88FA175](https://openairdocs.org/ntsb/MKC88FA175.md): Cessna 310R · Latimer, IA · Accident · 1 fatal · Field investigation · Final report · Sep 21, 1988 · N36HD · Destroyed
  > The pilot had completed his normal flight schedule and was assigned an additional trip from des moines, Iowa to st paul, Minnesota. Calculations show that the pilot had flown an estimated 5 hours in the 8 1/2 hours preceding the accident. The line attendant…
- [NTSB MKC88LA155](https://openairdocs.org/ntsb/MKC88LA155.md): Cessna 188B · Sumner, IA · Accident · No injuries · Limited investigation · Final report · Aug 11, 1988 · N4999R · Substantial damage
  > During takeoff for an aerial application operation, the pilot said he was not able to climb high enough to clear a 4 foot high road at the end of the runway. He collided with the road, shearing off the main ldg gear and substantially damaging the acft. He…
- [NTSB MKC88LA061](https://openairdocs.org/ntsb/MKC88LA061.md): Beech A36 · Cherokee, IA · Accident · No injuries · Limited investigation · Final report · Mar 15, 1988 · N8136R · Substantial damage
  > The plt stated, that shortly after takeoff, the engine lost substantial pwr. Afterwards there was smoke in the cockpit. The PIC reversed his course with the intent to land on the departure arpt. When he felt he had the ldg field made, he attempted to lower…
- [NTSB MKC84LA050](https://openairdocs.org/ntsb/MKC84LA050.md): Cessna 210L · Des Moines, IA · Accident · No injuries · Limited investigation · Final report · Dec 31, 1983 · N732DZ · Substantial damage
  > The acft departed toronto, Canada at 1927 CST. About 5 hrs & 1 min later, the eng lost power when the plt was on final apch for landing. Subsequently, the acft collided with a vehicle & a light pole when the plt made a forced landing on a snow-covered parking…
- [NTSB MKC83LA210](https://openairdocs.org/ntsb/MKC83LA210.md): Cessna 188A · Klemme, IA · Accident · No injuries · Limited investigation · Final report · Sep 2, 1983 · N9921G · Substantial damage
  > The acft inadvertently descended into the tops of a corn crop while dispensing smoke in preparation for spraying. The induced drag slowed the acft and it landed hard. The plt stated he diverted his his attn to the spray nozzles.
- [NTSB MKC80FA043](https://openairdocs.org/ntsb/MKC80FA043.md): Cessna 401A · Spirit Lake, IA · Accident · Serious injuries · Closed · Jul 11, 1980 · N3249Q · Destroyed
- [NTSB MKC80FCD18](https://openairdocs.org/ntsb/MKC80FCD18.md): Beech 95-D55 · Mason City, IA · Accident · No injuries · Closed · Jun 13, 1980 · N7952R · Substantial damage
- [NTSB MKC80FCD14](https://openairdocs.org/ntsb/MKC80FCD14.md): Cessna 210L · Clear Lake, IA · Accident · Serious injuries · Closed · Apr 2, 1980 · N59168 · Substantial damage
- [NTSB MKC80FCD12](https://openairdocs.org/ntsb/MKC80FCD12.md): Cessna 185 · Creston, IA · Accident · No injuries · Closed · Feb 7, 1980 · N7377H · Substantial damage
- [NTSB MKC80DCD10](https://openairdocs.org/ntsb/MKC80DCD10.md): Cessna U206 · West Union, IA · Accident · No injuries · Closed · Jan 11, 1980 · N733WF · Substantial damage
- [NTSB MKC78DCD47](https://openairdocs.org/ntsb/MKC78DCD47.md): Cessna 210M · Davenport, IA · Accident · No injuries · Closed · Aug 28, 1978 · N732LB · Substantial damage
- [NTSB MKC78DCD41](https://openairdocs.org/ntsb/MKC78DCD41.md): Cessna 188B · Yale, IA · Accident · No injuries · Closed · Aug 9, 1978 · N9208R · Substantial damage
- [NTSB MKC78DCD30](https://openairdocs.org/ntsb/MKC78DCD30.md): Cessna 188 · Atlantic, IA · Accident · No injuries · Closed · May 31, 1978 · N9921G · Substantial damage
- [NTSB MKC78FA034](https://openairdocs.org/ntsb/MKC78FA034.md): Beech S-35 · Audubon, IA · Accident · 5 fatal · Closed · Apr 29, 1978 · N7971K · Destroyed
- [NTSB MKC78DA019](https://openairdocs.org/ntsb/MKC78DA019.md): Cessna 310R · Muscatine, IA · Accident · No injuries · Closed · Jan 12, 1978 · N5080J · Substantial damage
- [NTSB MKC77FCD21](https://openairdocs.org/ntsb/MKC77FCD21.md): Cessna 206 · Ames, IA · Accident · No injuries · Closed · May 25, 1977 · N188AS · Substantial damage
- [NTSB MKC77FCD08](https://openairdocs.org/ntsb/MKC77FCD08.md): Bellanca 17-30A · Des Moines, IA · Accident · No injuries · Closed · Feb 6, 1977 · N9531E · Substantial damage
- [NTSB MKC76DCD42](https://openairdocs.org/ntsb/MKC76DCD42.md): Cessna 188 · Cedar Falls, IA · Accident · No injuries · Closed · May 18, 1976 · N9735G · Substantial damage
- [NTSB MKC76FCD08](https://openairdocs.org/ntsb/MKC76FCD08.md): Cessna A188 · Onawa, IA · Accident · No injuries · Closed · Sep 1, 1975 · N3560Q · Substantial damage
- [NTSB MKC75DCD23](https://openairdocs.org/ntsb/MKC75DCD23.md): Beech B55 · Marion, IA · Accident · No injuries · Closed · Nov 9, 1974 · N6288V · Substantial damage
- [NTSB MKC74FCD31](https://openairdocs.org/ntsb/MKC74FCD31.md): Bellanca 17-30A · Red Oak, IA · Accident · No injuries · Closed · May 5, 1974 · N8262R · 2 aircraft · Substantial damage
- [NTSB MKC72FCD32](https://openairdocs.org/ntsb/MKC72FCD32.md): Beech V35A · Ida Grove, IA · Accident · Serious injuries · Closed · Sep 30, 1971 · N7761R · Destroyed
- [NTSB MKC72DCD09](https://openairdocs.org/ntsb/MKC72DCD09.md): Beech V35A · Sac City, IA · Accident · No injuries · Closed · Jul 6, 1971 · N7943R · Substantial damage
- [NTSB MKC71DCD93](https://openairdocs.org/ntsb/MKC71DCD93.md): Beech S35 · Iowa City, IA · Accident · No injuries · Closed · Jun 11, 1971 · N215Q · Substantial damage
- [NTSB MKC71FCD60](https://openairdocs.org/ntsb/MKC71FCD60.md): Cessna U206E · Soldier, IA · Accident · Serious injuries · Closed · Feb 26, 1971 · N9442G · Substantial damage
- [NTSB MKC71FCD20](https://openairdocs.org/ntsb/MKC71FCD20.md): Cessna U206 · Holstein, IA · Accident · Minor injuries · Closed · Aug 30, 1970 · N5297U · Substantial damage
- [NTSB MKC70AK064](https://openairdocs.org/ntsb/MKC70AK064.md): Beech S35 · Guthrie Cntr, IA · Accident · No injuries · Closed · May 24, 1970 · N8684Q · Substantial damage
- [NTSB MKC70F0230](https://openairdocs.org/ntsb/MKC70F0230.md): Beech V35 · Dows, IA · Accident · No injuries · Closed · Oct 5, 1969 · N563DB · Substantial damage
- [NTSB MKC70D0147](https://openairdocs.org/ntsb/MKC70D0147.md): Beech S35 · Spirit Lake, IA · Accident · No injuries · Closed · Aug 23, 1969 · N171H · Substantial damage
- [NTSB MKC69D0400](https://openairdocs.org/ntsb/MKC69D0400.md): Beech V35 · Sac City, IA · Accident · No injuries · Closed · Apr 7, 1969 · N5727V · Substantial damage
- [NTSB MKC69F0254](https://openairdocs.org/ntsb/MKC69F0254.md): Beech V35 · Des Moines, IA · Accident · No injuries · Closed · Nov 11, 1968 · N3798Q · Substantial damage
- [NTSB MKC69F0010](https://openairdocs.org/ntsb/MKC69F0010.md): Cessna 206 · Spirit Lake, IA · Accident · No injuries · Closed · Jun 7, 1968 · N8056Z · Substantial damage
- [NTSB MKC68D0524](https://openairdocs.org/ntsb/MKC68D0524.md): Cessna 206 · Shenandoah, IA · Accident · No injuries · Closed · Apr 13, 1968 · N5244U · Substantial damage

Next page: https://openairdocs.org/ntsb.md?engine=17032&state=IA&page=2

## 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" = 'IA' 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 ('17032'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17032&state=IA

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