Near midair collision between air carrier and small aircraft.

Attributes
ACN	91622
Time
Date	198808
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 12500 msl bound upper : 12800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau tracon : ord
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 14000 flight time type : 1700
ASRS Report	91622
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	91694
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	Inter Facility Coordination Failure Pilot Deviation

Narrative:

Climbing southbound from ord to FL230, we were asked to expedite the climb through 12000'. Reaching 12000', I began to accelerate and continued climbing at 500 F.P.M. At 12500' a tan and white small aircraft (Y), pilot wearing white shirt, shot under the right side of our plane (my seat) heading north. No time for evasive action. Chicago ARTCC did not have contact with that plane. They called back after our report to tell us that chicago approach was working the airplane and he was at 12500'. This was a bad situation. Supplemental information from acn 91694. It happened so fast no evasive action was possible. It was only luck that prevented a midair.

Original NASA ASRS Text

Title: NMAC BETWEEN ACR AND SMALL ACFT.

Narrative: CLBING SBND FROM ORD TO FL230, WE WERE ASKED TO EXPEDITE THE CLB THROUGH 12000'. REACHING 12000', I BEGAN TO ACCELERATE AND CONTINUED CLBING AT 500 F.P.M. AT 12500' A TAN AND WHITE SMALL ACFT (Y), PLT WEARING WHITE SHIRT, SHOT UNDER THE RIGHT SIDE OF OUR PLANE (MY SEAT) HDG NORTH. NO TIME FOR EVASIVE ACTION. CHICAGO ARTCC DID NOT HAVE CONTACT WITH THAT PLANE. THEY CALLED BACK AFTER OUR RPT TO TELL US THAT CHICAGO APCH WAS WORKING THE AIRPLANE AND HE WAS AT 12500'. THIS WAS A BAD SITUATION. SUPPLEMENTAL INFO FROM ACN 91694. IT HAPPENED SO FAST NO EVASIVE ACTION WAS POSSIBLE. IT WAS ONLY LUCK THAT PREVENTED A MIDAIR.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.