# NTSB investigations, IL: Midair collision

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 CHI06LA157](https://openairdocs.org/ntsb/CHI06LA157.md): Good RV-6A · Peru, IL · Accident · 1 fatal · Limited investigation · Final report · Jun 18, 2006 · N86CG · 2 aircraft · Destroyed
  > Failure of the pilot of the second airplane in the formation to maintain clearance with the lead airplane during the overhead recovery maneuver prior to landing.
- [NTSB CHI00MA066](https://openairdocs.org/ntsb/CHI00MA066.md): Moravan Z242L · Zion, IL · Accident · 3 fatal · Major investigation · Final report · Feb 8, 2000 · N5ZA · 2 aircraft · Destroyed
  > Clearance not maintained by the pilot of the other airplane. A factor relating to the accident was the airport control tower's local controller's failure to provide effective sequencing.
- [NTSB CHI00FA003](https://openairdocs.org/ntsb/CHI00FA003.md): Beech D-45 · Oswego, IL · Accident · 1 fatal · Field investigation · Final report · Oct 1, 1999 · N300SH · 2 aircraft · Destroyed
  > the visual lookout not obtained by the pilot of the Beech T-34 and the inadequate procedure by the Lima Lima Flying Squadron. The delayed entry into the maneuver by the pilot of the Beech D-45 was a contributing factor.
- [NTSB CHI98FA096](https://openairdocs.org/ntsb/CHI98FA096.md): Wasielak Sonerai II L · Malta, IL · Accident · 2 fatal · Field investigation · Final report · Feb 22, 1998 · N38NL · 2 aircraft · Destroyed
  > The pilot's failed to maintain adequate clearance from the other aircraft.
- [NTSB CHI97FA218](https://openairdocs.org/ntsb/CHI97FA218.md): Cessna 172P · Chicago, IL · Accident · 7 fatal · Field investigation · Final report · Jul 19, 1997 · N5323K · 2 aircraft · Destroyed
  > the pilots not maintaining visual separation between their airplanes. A factor in this accident was the pilot of the southbound airplane not reporting her position abeam the airport as directed by the ATC controller.
- [NTSB CHI91FA212](https://openairdocs.org/ntsb/CHI91FA212.md): Centrair Pegasus 101B · Hinckley, IL · Accident · Serious injuries · Field investigation · Final report · Jul 7, 1991 · N126CC · 2 aircraft · Substantial damage
  > The failure of both pilots to maintain adequate visual lookout and ensure adequate separation during traffic pattern operations. A related factor is the non-standard uncontrolled airport procedures used by N126CC.
- [NTSB CHI91FA211](https://openairdocs.org/ntsb/CHI91FA211.md): Piper PA-28-180 · Quincy, IL · Accident · 4 fatal · Field investigation · Final report · Jul 7, 1991 · N8498W · 2 aircraft · Destroyed
  > The failure by the pilot of the other airplane to maintain clearance. Factors in the accident were the pilot's attempt to fly formation, his inadequate group briefing, and the lack of experience on the part of the pilot of the other airplane.
- [NTSB CHI91LA043](https://openairdocs.org/ntsb/CHI91LA043.md): Cessna 152 · Joliet, IL · Accident · No injuries · Limited investigation · Final report · Dec 8, 1990 · N48779 · 2 aircraft · Substantial damage
  > Inadequate visual lookout by the pilots of both aircraft, which resulted in their failure to see-and-avoid each other's aircraft.
- [NTSB CHI87FA004](https://openairdocs.org/ntsb/CHI87FA004.md): Piper PA-28-161 · Charleston, IL · Accident · 1 fatal · Field investigation · Final report · Oct 15, 1986 · N8267W · 2 aircraft · Substantial damage
  > N8267W was on practice NDB approach to rwy 29 under ATC clrnc with hooded stu at controls in left seat, ip in right seat, proceeding level at mda for low pass. Evidence indicates N30019 had entered downwind for rwy 24 and was in left turn VFR approach for rwy…
- [NTSB CHI86FA100](https://openairdocs.org/ntsb/CHI86FA100.md): Cessna 172M · Lafox, IL · Accident · 2 fatal · Field investigation · Final report · Mar 8, 1986 · N72MA · 2 aircraft · Destroyed
  > An instructor plt (cfi/cfii) & his student (pvt single eng rated plt) were on an instructional flt in a Cessna 172, N72MA. The student had rrecently been taking instrument flt training & had a hood for use on this flt. Prior to the acdnt. The Cessna 172 was…

## 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" = 'IL' 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" = 270)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=270&state=IL

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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.