Air carrier deviates WX without ATC contact.

Attributes
ACN	241669
Time
Date	199305
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : jfk
State Reference	NY
Altitude	msl bound lower : 29000 msl bound upper : 29000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
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 : atlantic enroute : other oceanic enroute airway : zny
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 80 flight time total : 11000 flight time type : 1500
ASRS Report	241669
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 4200 flight time type : 260
ASRS Report	241856
Events
Anomaly	inflight encounter : weather non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Imbedded cell appeared on radar. We made what was meant to be a minor deviation immediately. As radar was more finely tuned, necessary deviation ended up 10 mi east of centerline. Returned to track immediately thereafter with no change in time to next position. No radio calls made. No traffic indicated on TCASII.

Original NASA ASRS Text

Title: ACR DEVIATES WX WITHOUT ATC CONTACT.

Narrative: IMBEDDED CELL APPEARED ON RADAR. WE MADE WHAT WAS MEANT TO BE A MINOR DEV IMMEDIATELY. AS RADAR WAS MORE FINELY TUNED, NECESSARY DEV ENDED UP 10 MI E OF CTRLINE. RETURNED TO TRACK IMMEDIATELY THEREAFTER WITH NO CHANGE IN TIME TO NEXT POS. NO RADIO CALLS MADE. NO TFC INDICATED ON TCASII.

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.