Narrative:

At cruise, FL330, mach .80, approximately 100 mi ahead on A300 south of didle, an area of WX was noted and a request for a deviation up to 15 mi east was made on HF to ZNY. After a lengthy wait, and with visual confirmation of the necessity to deviation east, I made the decision to initiate my easterly deviation. About that time, ZNY called us and denied the deviation due to traffic. I informed them that I would exercise my emergency authority/authorized and deviation east up to 15 mi. I also told them I would report back on course and gave them an updated holma estimate. We deviated, reported back on course and crossed holma at the revised estimate. No further deviation was necessary. No calls were made to us from ZNY. It was noted on 130.55 that other aircraft did the same thing.

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Original NASA ASRS Text

Title: ATC UNABLE TO AUTH DEV FROM RTE FOR WX AVOIDANCE. CAPT USES EMER AUTH AND AVOIDS WX.

Narrative: AT CRUISE, FL330, MACH .80, APPROX 100 MI AHEAD ON A300 S OF DIDLE, AN AREA OF WX WAS NOTED AND A REQUEST FOR A DEV UP TO 15 MI E WAS MADE ON HF TO ZNY. AFTER A LENGTHY WAIT, AND WITH VISUAL CONFIRMATION OF THE NECESSITY TO DEV E, I MADE THE DECISION TO INITIATE MY EASTERLY DEV. ABOUT THAT TIME, ZNY CALLED US AND DENIED THE DEV DUE TO TFC. I INFORMED THEM THAT I WOULD EXERCISE MY EMER AUTH AND DEV E UP TO 15 MI. I ALSO TOLD THEM I WOULD RPT BACK ON COURSE AND GAVE THEM AN UPDATED HOLMA ESTIMATE. WE DEVIATED, RPTED BACK ON COURSE AND CROSSED HOLMA AT THE REVISED ESTIMATE. NO FURTHER DEV WAS NECESSARY. NO CALLS WERE MADE TO US FROM ZNY. IT WAS NOTED ON 130.55 THAT OTHER ACFT DID THE SAME THING.

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.