Narrative:

Vacated IFR assigned altitude having believed IFR plan was canceled by first officer.

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Original NASA ASRS Text

Title: A DA10 PIC LEAVES HIS ASSIGNED ALT OF 6000 FT WHEN HE BELIEVES THE FO HAD CANCELED IFR WITH ZBW CTLR.

Narrative: VACATED IFR ASSIGNED ALT HAVING BELIEVED IFR PLAN WAS CANCELED BY FO.

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.