Narrative:

Climbing through FL240 with clearance to FL290, we were told to maintain FL250. The first officer thought FL250 was a speed restr and didn't get altitude in the window. A turn was requested distracting me enough to miss the FL250 restr. At FL265 ATC told us to return to FL260.

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Original NASA ASRS Text

Title: PLTDEV CAUSED BY MISUNDERSTANDING AN ALT ASSIGNMENT FOR A SPD RESTR.

Narrative: CLBING THROUGH FL240 WITH CLRNC TO FL290, WE WERE TOLD TO MAINTAIN FL250. THE FO THOUGHT FL250 WAS A SPD RESTR AND DIDN'T GET ALT IN THE WINDOW. A TURN WAS REQUESTED DISTRACTING ME ENOUGH TO MISS THE FL250 RESTR. AT FL265 ATC TOLD US TO RETURN TO FL260.

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.