Narrative:

Just after level-off (FL220), en route from cvg to dtw, ZID reported traffic and twice requested our altitude (captain's response was '220), and then requested we check our altimeters. It was then we realized we had failed to set 29.92, thus our actual altitude was FL217, and traffic conflict was at FL210. This tripped the alert system in ZID. Failure to set 29.92 was caused by being preoccupied with other cockpit duties and other distrs. The captain was distracted by the loss of his log book on the floor. I was distracted by the F/a bringing up my crew meal. This failure to set 29.92 was strictly a breakdown in cockpit discipline!

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Original NASA ASRS Text

Title: CONFLICT ALERT ACTIVATED AS ACR MLG FLT CREW FAILED TO REST ALT TO 29 PT 92 ON CLIMB TO FL220.

Narrative: JUST AFTER LEVEL-OFF (FL220), ENRTE FROM CVG TO DTW, ZID RPTED TFC AND TWICE REQUESTED OUR ALT (CAPT'S RESPONSE WAS '220), AND THEN REQUESTED WE CHK OUR ALTIMETERS. IT WAS THEN WE REALIZED WE HAD FAILED TO SET 29.92, THUS OUR ACTUAL ALT WAS FL217, AND TFC CONFLICT WAS AT FL210. THIS TRIPPED THE ALERT SYS IN ZID. FAILURE TO SET 29.92 WAS CAUSED BY BEING PREOCCUPIED WITH OTHER COCKPIT DUTIES AND OTHER DISTRS. THE CAPT WAS DISTRACTED BY THE LOSS OF HIS LOG BOOK ON THE FLOOR. I WAS DISTRACTED BY THE F/A BRINGING UP MY CREW MEAL. THIS FAILURE TO SET 29.92 WAS STRICTLY A BREAKDOWN IN COCKPIT DISCIPLINE!

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.