DC10 had an near midair collision on departure from ord.

Attributes
ACN	421082
Time
Date	199811
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 14000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Route In Use	departure other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 18000 flight time type : 150
ASRS Report	421082
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 200 flight time total : 4000 flight time type : 700
ASRS Report	421991
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 400 vertical : 400
Supplementary
Air Traffic Incident	Operational Error
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Climbing 270 degrees out of ord, at approximately 14000 ft, we saw, on TCASII, traffic below and climbing at our 2 O'clock position. We were climbing at less than 1000 FPM to increase speed from previous ATC assigned restr. Just as I was reaching to increase autoplt climb rate, ATC called us to 'increase rate through 16000 ft.' at that point we got TCASII RA 'descend' command. We started descent and told ATC we were descending with a TCASII RA. Traffic was still below us and now about 2 NM. ATC told the beechcraft traffic to descend. Our descend RA quickly changed to a climb RA, which we followed. We passed 400 ft over the traffic. We don't know if the beech had TCASII. Contributing to this event was ATC's late call of traffic, which was clearly on a conflicting course and at an altitude very near to ours. Also, it didn't help, and possibly worsened the situation, when ATC gave the beech a descend clearance after we told them we were descending.

Original NASA ASRS Text

Title: DC10 HAD AN NMAC ON DEP FROM ORD.

Narrative: CLBING 270 DEGS OUT OF ORD, AT APPROX 14000 FT, WE SAW, ON TCASII, TFC BELOW AND CLBING AT OUR 2 O'CLOCK POS. WE WERE CLBING AT LESS THAN 1000 FPM TO INCREASE SPD FROM PREVIOUS ATC ASSIGNED RESTR. JUST AS I WAS REACHING TO INCREASE AUTOPLT CLB RATE, ATC CALLED US TO 'INCREASE RATE THROUGH 16000 FT.' AT THAT POINT WE GOT TCASII RA 'DSND' COMMAND. WE STARTED DSCNT AND TOLD ATC WE WERE DSNDING WITH A TCASII RA. TFC WAS STILL BELOW US AND NOW ABOUT 2 NM. ATC TOLD THE BEECHCRAFT TFC TO DSND. OUR DSND RA QUICKLY CHANGED TO A CLB RA, WHICH WE FOLLOWED. WE PASSED 400 FT OVER THE TFC. WE DON'T KNOW IF THE BEECH HAD TCASII. CONTRIBUTING TO THIS EVENT WAS ATC'S LATE CALL OF TFC, WHICH WAS CLRLY ON A CONFLICTING COURSE AND AT AN ALT VERY NEAR TO OURS. ALSO, IT DIDN'T HELP, AND POSSIBLY WORSENED THE SIT, WHEN ATC GAVE THE BEECH A DSND CLRNC AFTER WE TOLD THEM WE WERE DSNDING.

Data retrieved from NASA's ASRS site as of July 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.