Narrative:

I was the manual controller on a radar/nonradar sector in san juan. Widebody transport had been coordinated with ZNY at FL350 over ender intersection. During the position relief briefing, the radar controller said 'widebody transport is ender at 41.' I thought he meant FL410 when, in fact, he meant a revised ender estimate of XX41Z. I did not question him about it nor did he question me. I recoordinated the flight at FL410 when he had never been issued any altitude other than FL350. I simply misunderstood what the radar controller meant. No other traffic was involved.

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Original NASA ASRS Text

Title: A WRONG ALT WAS COORD ON A WDB WITH ADJACENT ATC FACILITY. THE WDB REMAINED AT ORIGINAL ALT.

Narrative: I WAS THE MANUAL CTLR ON A RADAR/NONRADAR SECTOR IN SAN JUAN. WDB HAD BEEN COORDINATED WITH ZNY AT FL350 OVER ENDER INTXN. DURING THE POS RELIEF BRIEFING, THE RADAR CTLR SAID 'WDB IS ENDER AT 41.' I THOUGHT HE MEANT FL410 WHEN, IN FACT, HE MEANT A REVISED ENDER ESTIMATE OF XX41Z. I DID NOT QUESTION HIM ABOUT IT NOR DID HE QUESTION ME. I RECOORDINATED THE FLT AT FL410 WHEN HE HAD NEVER BEEN ISSUED ANY ALT OTHER THAN FL350. I SIMPLY MISUNDERSTOOD WHAT THE RADAR CTLR MEANT. NO OTHER TFC WAS INVOLVED.

Data retrieved from NASA's ASRS site as of August 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.