# NTSB investigations, IL: Near collision between aircraft

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 OPS06IA008](https://openairdocs.org/ntsb/OPS06IA008.md): Boeing 737-322 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 24, 2006 · N315UA · 2 aircraft · No damage
  > The failure of the ORD tower south local controller to monitor Atlas Air flight 6972 on arrival to runway 14R and subsequently clearing United Airlines flight 1015 for takeoff on intersecting runway 27L causing a loss of separation between the two aircraft.
- [NTSB OPS06IA007](https://openairdocs.org/ntsb/OPS06IA007.md): Boeing 737-300 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Mar 23, 2006 · N309UA · 2 aircraft · No damage
  > The probable cause of this incident was the ORD tower local controller's failure to provide sufficient separation between two aircraft departing intersecting runways. Contributing to the incident was the ORD local monitor's failure to monitor the situating…
- [NTSB OPS06IA006](https://openairdocs.org/ntsb/OPS06IA006.md): Airbus Industrie 319 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Mar 21, 2006 · D-APAC · 2 aircraft · No damage
  > The probable cause of the incident was the local controller's failure to ensure proper separation between Lufthansa flight 437 and Chautauqua (CHQ) flight 7826. Contributing was the failure of the local monitor to monitor the situation and advise the local…
- [NTSB CHI00IA248](https://openairdocs.org/ntsb/CHI00IA248.md): Aerospatiale ATR-42-2000 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Aug 6, 2000 · N269AE · 2 aircraft · No damage
  > the improper takeoff clearance issued by the local controller.
- [NTSB CHI97IA164](https://openairdocs.org/ntsb/CHI97IA164.md): Douglas DC-10-30F · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jun 10, 1997 · N302FE · No damage
  > the lack of communications to assure safe operations between aircraft on a non-movement area.
- [NTSB CHI95IA095](https://openairdocs.org/ntsb/CHI95IA095.md): Boeing 747-136 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Feb 26, 1995 · GAWNM · No damage
  > the North Local Controller's failure to issue a clearance which would ensure separation between the two airplanes and the North Local Control Monitor's failure to adequately back up the controller. Factors were the complexity of the airport operations and…
- [NTSB CHI93IA167](https://openairdocs.org/ntsb/CHI93IA167.md): Cessna 550 · West Chicago, IL · Incident · No injuries · Incident investigation · Final report · May 10, 1993 · N41SM · No damage
  > Inadequate control tower service by the local air traffic controller by providing conflicting clearances to the pilots of two aircraft.
- [NTSB CHI92LA259](https://openairdocs.org/ntsb/CHI92LA259.md): Mooney 20F · Lacon, IL · Accident · No injuries · Limited investigation · Final report · Aug 29, 1992 · N3486N · Substantial damage
  > The pilot's failure to recognize that the runway he selected for landing was closed. Factors which contributed to the accident were: the pilot's anxiety following the near-collision, and his limited ability to detect the orange-colored marking.
- [NTSB CHI92IA061](https://openairdocs.org/ntsb/CHI92IA061.md): Mcdonnell Douglas DC-10-30 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Dec 23, 1991 · N142AA · 2 aircraft · No damage
  > The local controller's not understanding read back of radio communications. Factors include the pilot-in-command of flight 73 not understanding verbal instructions; local controller not visually identifying the aircraft; and inadequate surveillance (FAA) in…
- [NTSB CHI89IA144](https://openairdocs.org/ntsb/CHI89IA144.md): Dornier DO-228 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 9, 1989 · N263MC · No damage
  > Poor lookout by the crew of the Dornier and the baron.
- [NTSB CHI89IA143](https://openairdocs.org/ntsb/CHI89IA143.md): Mcdonnell Douglas DC-9-32 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 9, 1989 · N939ML · No damage
  > Poor lookout by the crew of the DC-9 and the Cessna pilot.
- [NTSB CHI89IA054](https://openairdocs.org/ntsb/CHI89IA054.md): Short Brothers SD360 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Mar 8, 1989 · N366MQ · No damage
  > The PIC followed a clearance intended for another airplane.
- [NTSB MIA88IA168](https://openairdocs.org/ntsb/MIA88IA168.md): Piper PA-42-720 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · May 11, 1988 · N900MP · 2 aircraft · No damage
  > Condor flt 610 (Mcdonnell Douglas DC-10, german registration: dadso) was aprx 2 hrs late as the flt crew members were preparing to takeoff. Subsequently, flt 610 was clrd for takeoff with instructions to cross the 5 DME (on the standard instrument…
- [NTSB MIA88IA167](https://openairdocs.org/ntsb/MIA88IA167.md): Beech 200 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · May 10, 1988 · N981LL · 2 aircraft · No damage
  > Midway flt 172 (Mcdonnell Douglas DC-9, N1065T) was on an IFR departure from Chicago midway arpt at the same time that Beech 200, N981LL, was on an IFR arrival for a visual apch to merrill c meigs arpt, although both were in VMC. Previously, o'hare TRACON had…
- [NTSB CHI88IA074](https://openairdocs.org/ntsb/CHI88IA074.md): Swearingen SA226T · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Mar 7, 1988 · N600TA · 2 aircraft · No damage
  > The TRACON supervisor failed to comply with the established visual minima criteria and his incorrect issuance of a visual approach to an arriving aircraft.
- [NTSB CHI88IA073](https://openairdocs.org/ntsb/CHI88IA073.md): Boeing 747-227B · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Feb 19, 1988 · N635US · 2 aircraft · No damage
  > Failure of the tower cab supervisor to assure that coordination between the south local controller and north local controller had been completed. A factor is the failure of FAA tower management to insure there were personnel manning the cab coordinator…
- [NTSB CHI88IA015](https://openairdocs.org/ntsb/CHI88IA015.md): Boeing 737-322 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Oct 29, 1987 · N305UA · 2 aircraft · No damage
  > The south rwys (32L, 9R, & 4R) were being ctld by the south LCL ctlr (slc) & the north rwys (9L & 4L) were ctld by the north LCL ctlr (nlc). At 1543:26, slc told united flt 973 (Boeing 737) to hold on 32L & expect a 3 min delay bfr tkof. Air Wisconsin flt 954…
- [NTSB CHI87IA188](https://openairdocs.org/ntsb/CHI87IA188.md): Boeing 727-233 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Aug 8, 1987 · CGYNE · 2 aircraft · No damage
  > Air Canada flt 839 (Boeing 727, c-gyne) was depg Chicago o'hare intl arpt as Cessna 650 (citation), N20AT, was depg palwaukee (pwk) arpt, about 8 mi north of o'hare. Both flts tkof with IFR flt plans. Bfr the citation tkof, the pwk twr ctlr ctcd the TRACON…
- [NTSB CHI87IA183](https://openairdocs.org/ntsb/CHI87IA183.md): Mcdonnell Douglas DC-10-10 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Aug 3, 1987 · N113AA · 2 aircraft · No damage
  > After ldg the co B727 was directed to make two right turns and follow an acft that had landed in front of him. The pilot made one right turn and taxied down an empty runway. This taxi route crossed an active runway. An aa#DC-10 on takeoff roll, at 110 knots,…
- [NTSB CHI87IA135](https://openairdocs.org/ntsb/CHI87IA135.md): Mcdonnell Douglas DC-9-82 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · May 30, 1987 · N224AA · No damage
  > American flt 637 was on departure from Chicago-o'hare intl arpt (ord), climbing thru 7300' MSL, when it passed American flt 393 with aprx 500' vertical sepn & 1/4 mi horizontal sepn. This occurred after an air traffic assistant, who was working the clnc…
- [NTSB CHI87IA109](https://openairdocs.org/ntsb/CHI87IA109.md): Boeing 727-222 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Apr 7, 1987 · N7258U · No damage
  > A united airlines Boeing 727 domestic passenger flight was holding short of runway 32L at the Chicago-o'hare international airport awaiting clearance for an intersection takeoff. A northwest airlines Boeing 747 international passenger flight was holding in…
- [NTSB CHI86MA142](https://openairdocs.org/ntsb/CHI86MA142.md): Mcdonnell Douglas DC-9-31 · Chicago, IL · Incident · No injuries · Major investigation · Final report · May 17, 1986 · N973VJ · 2 aircraft · Minor damage
  > U.S. Air flight 373 passed over American airlines flight 695 at the intersection of runways 32R and 4L while both aircraft were taking off. Both aircraft had been cleared for takeoff by the local controller at o'hare tower. The aircraft came within twenty…
- [NTSB ATL84IA160](https://openairdocs.org/ntsb/ATL84IA160.md): Douglas DC-9-32 · Mount Vernon, IL · Incident · No injuries · Incident investigation · Final report · May 4, 1984 · N923L · No damage
  > Kansas city ARTCC (zkc) had cleared ozark flt 709 (a DC-9, N923L) to cruise at FL270. While proceeding ese near the edgeof the zkc area, the DC-9 converged on zorro 11 (a flt of 3 F-4'S). The F-4'S had been cleared by indianaplolis ARTCC (zid) to proceed…

## 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" = 280)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=280&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.