An air carrier received zwy clearance for an 80 NM weather deviation on L451; but needed 150 NM devi...

Attributes
ACN	1015162
Time
Date	201206
Local Time Of Day	1801-2400
Place
Locale Reference	ZWY.ARTCC
State Reference	NY
Environment
Light	Night
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Oceanic Airway L451
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 250 Flight Crew Total 8200 Flight Crew Type 900
Events
Anomaly	Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence

Narrative:

While at cruise at FL360 on L451 approaching jains intersection; we encountered a line of thunderstorms approximately 150 miles long. Requested and obtained clearance from new york oceanic to deviate up to 80 miles. We were unable to get through the line of thunderstorms at 80 miles and we were unable to contact new york oceanic in order to obtain clearance to deviate further. We followed fom procedures including transmitting in the blind and continued to 110 miles off course before we were able to get across the line. Finally we were able to receive clearance to proceed direct to the following way point.

Original NASA ASRS Text

Title: An Air Carrier received ZWY clearance for an 80 NM weather deviation on L451; but needed 150 NM deviation; but unable to contact ZWY again they followed international track deviation procedures until clear of the weather.

Narrative: While at cruise at FL360 on L451 approaching JAINS Intersection; we encountered a line of thunderstorms approximately 150 miles long. Requested and obtained clearance from New York Oceanic to deviate up to 80 miles. We were unable to get through the line of thunderstorms at 80 miles and we were unable to contact New York Oceanic in order to obtain clearance to deviate further. We followed FOM procedures including transmitting in the blind and continued to 110 miles off course before we were able to get across the line. Finally we were able to receive clearance to proceed direct to the following way point.

Data retrieved from NASA's ASRS site as of July 2013 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.

An air carrier received zwy clearance for an 80 NM weather deviation on L451; but needed 150 NM deviation; but unable to contact zwy again they followed international track deviation procedures until clear of the weather.