Narrative:

Took off from nantes/atlantique en route to bruxelles, belgium. Subsequently cleared level FL310 eastbound on 1-WAY airway, thence cleared to FL330. First officer flying and we both heard and read back FL330. Thence, were handed off to another controller who queried our altitude. He spoke very poor english and I believe offered us FL350 which we accepted and climbed to and reported reaching. I am not sure if he meant only that we were at an odd altitude when cruising eastbound on an even only airway (ie, E7) or if he meant that we were at an improper altitude, but we had accepted FL330 from the previous controller. No conflict existed so I am submitting this report to document the occurrence.

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Original NASA ASRS Text

Title: AN ACR B757-200 OPERATING IN FOREIGN AIRSPACE WAS CLRED TO AN ODD ALT ON A 1-WAY AIRWAY THAT NORMALLY USES ONLY EVEN ALTS.

Narrative: TOOK OFF FROM NANTES/ATLANTIQUE ENRTE TO BRUXELLES, BELGIUM. SUBSEQUENTLY CLRED LEVEL FL310 EBOUND ON 1-WAY AIRWAY, THENCE CLRED TO FL330. FO FLYING AND WE BOTH HEARD AND READ BACK FL330. THENCE, WERE HANDED OFF TO ANOTHER CTLR WHO QUERIED OUR ALT. HE SPOKE VERY POOR ENGLISH AND I BELIEVE OFFERED US FL350 WHICH WE ACCEPTED AND CLBED TO AND RPTED REACHING. I AM NOT SURE IF HE MEANT ONLY THAT WE WERE AT AN ODD ALT WHEN CRUISING EBOUND ON AN EVEN ONLY AIRWAY (IE, E7) OR IF HE MEANT THAT WE WERE AT AN IMPROPER ALT, BUT WE HAD ACCEPTED FL330 FROM THE PREVIOUS CTLR. NO CONFLICT EXISTED SO I AM SUBMITTING THIS RPT TO DOCUMENT THE OCCURRENCE.

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.