Narrative:

Approaching jains on L451 had to deviate around a line of thunderstorms. Received a clearance to deviate left of course. It turned out that we needed an additional 30nm. We were unable to contact ATC on HF; so we used weather deviation procedures; (lights on; blind broadcasts of pan pan and our position). Approximately 1 min later while typing a request on cpdlc established comm with ATC and was cleared direct ilido int.

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Original NASA ASRS Text

Title: Air Carrier Captain reported difficulty communicating with ATC over the western Atlantic. Emergency authority was exercised to avoid weather prior to receiving clearance.

Narrative: Approaching JAINS on L451 had to deviate around a line of thunderstorms. Received a clearance to deviate left of course. It turned out that we needed an additional 30nm. We were unable to contact ATC on HF; so we used weather deviation procedures; (lights on; blind broadcasts of pan pan and our position). Approximately 1 min later while typing a request on CPDLC established comm with ATC and was cleared direct ILIDO int.

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.