Air carrier deviating for WX over the ocean conflicted with another air carrier at the same altitude...

Attributes
ACN	119192
Time
Date	198908
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ack
State Reference	MA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : atlantic enroute : other oceanic
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	119192
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe inflight encounter : weather non adherence : clearance non adherence : required legal separation other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 99999 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X was flight planned over poggo at FL350. Air carrier Y was flight planned over joboc at FL350. 2 primary targets were observed 50 mi east of joboc with about 20 mi separation. Subsequent track history showed that the 2 aircraft would have crossed courses 8-10 minutes previously if tracks remained the same.

Original NASA ASRS Text

Title: ACR DEVIATING FOR WX OVER THE OCEAN CONFLICTED WITH ANOTHER ACR AT THE SAME ALT.

Narrative: ACR X WAS FLT PLANNED OVER POGGO AT FL350. ACR Y WAS FLT PLANNED OVER JOBOC AT FL350. 2 PRIMARY TARGETS WERE OBSERVED 50 MI E OF JOBOC WITH ABOUT 20 MI SEPARATION. SUBSEQUENT TRACK HISTORY SHOWED THAT THE 2 ACFT WOULD HAVE CROSSED COURSES 8-10 MINUTES PREVIOUSLY IF TRACKS REMAINED THE SAME.

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.