A B727 flight is allowed a climb towards unknown VFR traffic 500 ft above the ceiling of the class B airspace 20 mi sse of ord, il.

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Attributes
ACN	518090
Time
Date	200107
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 10000 msl bound upper : 10200
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : c90.tracon tower : mmmx.tower
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : c90.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 4600 flight time type : 502
ASRS Report	518090
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical non adherence : published procedure non adherence : required legal separation non adherence : far other anomaly
Independent Detector	atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew other
Miss Distance	vertical : 300
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Climbing through 10.0 noticed aircraft on TCASII 500 ft above us. Shallowed climb then received TA followed by a 'descend' RA. Descended through 10000 ft and exceeded 250 KTS in the descent. No visual obtained on other aircraft. TCASII indicated a 300 ft separation. Queried ATC (ord departure) about airplane. He indicated that he had him on radar the whole time and didn't point him out. We were cleared to 17000 ft.

Original NASA ASRS Text

Title: A B727 FLT IS ALLOWED A CLB TOWARDS UNKNOWN VFR TFC 500 FT ABOVE THE CEILING OF THE CLASS B AIRSPACE 20 MI SSE OF ORD, IL.

Narrative: CLBING THROUGH 10.0 NOTICED ACFT ON TCASII 500 FT ABOVE US. SHALLOWED CLB THEN RECEIVED TA FOLLOWED BY A 'DSND' RA. DSNDED THROUGH 10000 FT AND EXCEEDED 250 KTS IN THE DSCNT. NO VISUAL OBTAINED ON OTHER ACFT. TCASII INDICATED A 300 FT SEPARATION. QUERIED ATC (ORD DEP) ABOUT AIRPLANE. HE INDICATED THAT HE HAD HIM ON RADAR THE WHOLE TIME AND DIDN'T POINT HIM OUT. WE WERE CLRED TO 17000 FT.

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.