An E145 crew on an arrival to lga at FL280 was given an expedited descent clearance by a ZOB controller because of traffic going to ord. Separation was lost when the crew was unable to level in time at FL220.

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Attributes
ACN	598048
Time
Date	200310
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : pmm.vortac
State Reference	MI
Altitude	msl single value : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level descent : vacating altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 18
ASRS Report	598048
Person 2
Affiliation	government : faa
Function	controller : handoff position
Experience	controller radar : 2
ASRS Report	598047
Events
Anomaly	conflict : airborne less severe inflight encounter : weather inflight encounter other non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : radar mode c other controllera other controllerb
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 25000 vertical : 400
Supplementary
Problem Areas	ATC Human Performance Weather
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X at FL290 was vectored away from pmm sector. Air carrier X was issued direct to yqg VOR and descent to FL240. Air carrier Y at FL280 was traffic. I noticed aircraft coming close and issued clearance to clean up the situation, but action was too late. Supplemental information from acn 598047: when controller issued descent to FL240 I did a traffic search. It was good but due to high winds, aircraft #2 was faster than normal.

Original NASA ASRS Text

Title: AN E145 CREW ON AN ARR TO LGA AT FL280 WAS GIVEN AN EXPEDITED DSCNT CLRNC BY A ZOB CTLR BECAUSE OF TFC GOING TO ORD. SEPARATION WAS LOST WHEN THE CREW WAS UNABLE TO LEVEL IN TIME AT FL220.

Narrative: ACR X AT FL290 WAS VECTORED AWAY FROM PMM SECTOR. ACR X WAS ISSUED DIRECT TO YQG VOR AND DSCNT TO FL240. ACR Y AT FL280 WAS TFC. I NOTICED ACFT COMING CLOSE AND ISSUED CLRNC TO CLEAN UP THE SIT, BUT ACTION WAS TOO LATE. SUPPLEMENTAL INFO FROM ACN 598047: WHEN CTLR ISSUED DSCNT TO FL240 I DID A TFC SEARCH. IT WAS GOOD BUT DUE TO HIGH WINDS, ACFT #2 WAS FASTER THAN NORMAL.

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.