Air carrier X climbed to occupied altitude had less than standard separation with Y. TCASII TA. Syst...

Attributes
ACN	263453
Time
Date	199402
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 5700 msl bound upper : 6300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord tower : dca
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 220 flight time total : 8000 flight time type : 1000
ASRS Report	263453
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 4800 flight time type : 2000
ASRS Report	263294
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 600
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X after takeoff on departure ord runway 32L climbing to 5000 ft MSL runway heading, contacted departure control (125.4) and received 'radar contact.' new clearance immediately followed to climb to 6000 ft MSL and informed of crossing traffic at 1 O'clock, 5 mi at 7000 ft MSL. We observed and called traffic in sight (foker 100) which passed right to left in front of us as we were climbing through approximately 4500 ft MSL. With reported traffic now at 9 O'clock approximately 3 mi above us and as we were climbing through approximately 5500 ft MSL ord departure control ordered us to 'level off immediately.' our TCASII simultaneously gave us a TA on aircraft at 1 O'clock approximately 2 mi at 6300 ft MSL (could have been at wbound VFR altitude since it was wbound in trail with foker 100 traffic previously reported). No TCASII RA was ever received during this incident. We immediately leveled off at 5700 ft MSL and asked ord departure control for clarification of our climb clearance. We received no response except further insistence that we level off immediately. We then told departure control that we were cleared to 6000 ft MSL and were descending back down to 5000 ft. Departure acknowledged our intention with 'roger.' observed on TCASII that conflicting traffic had passed behind and above us with no further conflict.

Original NASA ASRS Text

Title: ACR X CLBED TO OCCUPIED ALT HAD LTSS WITH Y. TCASII TA. SYS ERROR.

Narrative: ACR X AFTER TKOF ON DEP ORD RWY 32L CLBING TO 5000 FT MSL RWY HDG, CONTACTED DEP CTL (125.4) AND RECEIVED 'RADAR CONTACT.' NEW CLRNC IMMEDIATELY FOLLOWED TO CLB TO 6000 FT MSL AND INFORMED OF XING TFC AT 1 O'CLOCK, 5 MI AT 7000 FT MSL. WE OBSERVED AND CALLED TFC IN SIGHT (FOKER 100) WHICH PASSED R TO L IN FRONT OF US AS WE WERE CLBING THROUGH APPROX 4500 FT MSL. WITH RPTED TFC NOW AT 9 O'CLOCK APPROX 3 MI ABOVE US AND AS WE WERE CLBING THROUGH APPROX 5500 FT MSL ORD DEP CTL ORDERED US TO 'LEVEL OFF IMMEDIATELY.' OUR TCASII SIMULTANEOUSLY GAVE US A TA ON ACFT AT 1 O'CLOCK APPROX 2 MI AT 6300 FT MSL (COULD HAVE BEEN AT WBOUND VFR ALT SINCE IT WAS WBOUND IN TRAIL WITH FOKER 100 TFC PREVIOUSLY RPTED). NO TCASII RA WAS EVER RECEIVED DURING THIS INCIDENT. WE IMMEDIATELY LEVELED OFF AT 5700 FT MSL AND ASKED ORD DEP CTL FOR CLARIFICATION OF OUR CLB CLRNC. WE RECEIVED NO RESPONSE EXCEPT FURTHER INSISTENCE THAT WE LEVEL OFF IMMEDIATELY. WE THEN TOLD DEP CTL THAT WE WERE CLRED TO 6000 FT MSL AND WERE DSNDING BACK DOWN TO 5000 FT. DEP ACKNOWLEDGED OUR INTENTION WITH 'ROGER.' OBSERVED ON TCASII THAT CONFLICTING TFC HAD PASSED BEHIND AND ABOVE US WITH NO FURTHER CONFLICT.

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.

Air carrier X climbed to occupied altitude had less than standard separation with Y. TCASII TA. System error.