ATC COM ACR X NON ADHERENCE TO ATC CLRNC ENTERED HOLDING ON OCEANIC RTE TO AVOID WX TSTMS. FLC EMER AUTHORITY.

Narrative

USING WX RADAR (ON 300 NM SCALE) I HAD DETECTED THE LINE OF CB'S S OF CHAMP ACROSS A-300. AT 175 NM S OF CHAMP; I HAD REQUESTED CLRNC TO FL350 AND L AND R (OF A-300) DEVS S OF CHAMP TO PENETRATE CB LINE. AT 100 NM S OF CHAMP; I RECEIVED CLRNC TO DEVIATE E OF A-300 NOT MORE THAN 40 NM AND WAS DENIED CLRNC TO CLB TO FL350. ON A-300 APPROX 80 NM S OF CHAMP; I ADVISED NY OCEANIC (ON HF) THAT I WAS 'EXERCISING THE USE OF MY EMER AUTHORITY' TO ENTER A HOLDING PATTERN (BTWN 80-100 NM S OF CHAMP TO THE W SIDE OF A-300; L TURNS) WHILE ACQUIRING ATC CLRNC TO DEVIATE ON A 270 DEG HDG FOR 100 NM IN ORDER TO PENETRATE A SOLID LINE OF CB'S LYING E-W ACROSS A-300 FOR APPROX 100 NM ON BOTH SIDES OF A-300 JUST S OF CHAMP; WITH TOPS IN EXCESS OF FL350. WE WERE AT FL310. WHILE ENTERING THE HOLDING PATTERN; NY OCEANIC PUT ME IN DIRECT CONTACT WITH NY ATC WHO CLRED ME TO DSND TO FL290 AND FLY ON A 270 DEGS HDG UNTIL ABLE TO PENETRATE THE LINE NBOUND THENCE TO PROCEED DIRECT TO LYNUS; THEN DIRECT TO BERGH ON A-300. RECOMMENDATION: QUICKER RESPONSE BY OCEANIC CTL TO PLT'S DEV REQUESTS DUE TO WX. THIS COULD BE FACILITATED BY (PERHAPS) DIRECT PLT TO AT C CTLR VHF COM VIA SATELLITES (VIA RELAY ON HF VIA OCEANIC RADIO OPERATOR).