Expressjet E145 and Skywest CRJ2 at Chicago on May 16th 2011, near collision
Last Update: November 8, 2012 / 12:31:14 GMT/Zulu time
Incident Facts
Date of incident
May 16, 2011
Classification
Incident
Cause
Near collision
Airline
Expressjet
Flight number
XE-6075
Departure
Chicago O'Hare, United States
Destination
Buffalo, United States
Aircraft Registration
N15574
Aircraft Type
Embraer ERJ-145
ICAO Type Designator
E145
At the same time a Skywest Canadair CRJ-200, registration N905SW performing flight OO-6958 from Muskegon,MI to Chicago O'Hare,IL (USA), was cleared to land on runway 09R, the final approach track crossing runway 32L.
The NTSB reported, that a supervisor on duty noticed the developing conflict, in which the Skywest would almost overfly the Expressjet, and instructed the controller handling the Skywest to direct the aircraft to go around. The Skywest crew went around as instructed and overflew the Expressjet, the separation reduced to 225 feet vertical and less than 480 feet lateral.
The Expressjet continued the takeoff and climbed out normally reaching their destination safely, the Skywest landed safely following their second approach.
The NTSB have opened an investigation into the "air traffic control incident".
On Sep 15th 2012 the NTSB released their brief factual report adding that the two aircraft carried a total of 63 people.
The third local controller (3LC) had cleared XE-6075 to line up runway 32L and wait, 44 seconds later he cleared the aircraft for takeoff with the additional remark "don't delay roll". 56 seconds the controller transmitted an expletive, the north local controller (NLC) who had cleared OO-6958 to land on runway 09R prior to 3LC clearing XE-6075 to line up runway 32, instructed OO-6958 to go around 1 second after the expletive.
12 seconds after 3LC had transmitted his expletive, the crew of XE-6075 transmitted their expletive too and inquired "what was that?" After issuing instructions to turn right and remain on frequency and upon a second query "what was that" 3LC transmitted "sorry about that".
The ATC supervisor relieved 3LC after that transmission and logged the occurrence.
FAA radar data showed OO-6958 crossed runway 32L about 275 feet above and 480 feet behind XE-6075.
On Nov 8th 2012 the NTSB released their final report concluding the probable cause was:
The air traffic controllerÂ’s failure to adhere to runway separation requirements and his issuance of an improper takeoff clearance. Contributing to the incident was the controller's failure to recall that there was an arrival inbound to a crossing runway.
Incident Facts
Date of incident
May 16, 2011
Classification
Incident
Cause
Near collision
Airline
Expressjet
Flight number
XE-6075
Departure
Chicago O'Hare, United States
Destination
Buffalo, United States
Aircraft Registration
N15574
Aircraft Type
Embraer ERJ-145
ICAO Type Designator
E145
This article is published under license from Avherald.com. © of text by Avherald.com.
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