Less than standard separation when air carrier-large transport descended to the altitude of air carrier-widebody transport that was deviating around WX.

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Attributes
ACN	91118
Time
Date	198807
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : cyn
State Reference	NJ
Altitude	msl bound lower : 31000 msl bound upper : 32500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdc tower : pao
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute airway : zdc
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 4
ASRS Report	91118
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 6000 vertical : 1500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I took a deviating aircraft from ZNY heading southbound that should have been heading wbound at FL310. Widebody transport X was northbound descending to FL290. Neither aircraft would turn right due to WX. I told widebody transport X, 'immediate descent to FL290,' and large transport Y to, 'turn left to 090 degrees and climb to FL330.' large transport Y said, 'too heavy to climb, am turning left now.' aircraft passed 1 mi latitude and 1500' vertical.

Original NASA ASRS Text

Title: LESS THAN STANDARD SEPARATION WHEN ACR-LGT DESCENDED TO THE ALT OF ACR-WDB THAT WAS DEVIATING AROUND WX.

Narrative: I TOOK A DEVIATING ACFT FROM ZNY HDG SBND THAT SHOULD HAVE BEEN HDG WBOUND AT FL310. WDB X WAS NBOUND DSNDING TO FL290. NEITHER ACFT WOULD TURN RIGHT DUE TO WX. I TOLD WDB X, 'IMMEDIATE DSCNT TO FL290,' AND LGT Y TO, 'TURN LEFT TO 090 DEGS AND CLB TO FL330.' LGT Y SAID, 'TOO HVY TO CLB, AM TURNING LEFT NOW.' ACFT PASSED 1 MI LAT AND 1500' VERT.

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.