Narrative:

During climb to cruise altitude of FL350 instructed to level off at FL260. Climbed through FL260 to 26450 ft before descending back to FL260. I was distracted by flight attendant entering cockpit to report an unruly passenger. I should have not allowed this distraction to occur and must exercise greater attention to duty of flying.

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Original NASA ASRS Text

Title: FLC OF AN MLG OVERSHOT CLB ALT DUE TO COCKPIT DISTR BY A CABIN ATTENDANT.

Narrative: DURING CLB TO CRUISE ALT OF FL350 INSTRUCTED TO LEVEL OFF AT FL260. CLBED THROUGH FL260 TO 26450 FT BEFORE DSNDING BACK TO FL260. I WAS DISTRACTED BY FLT ATTENDANT ENTERING COCKPIT TO RPT AN UNRULY PAX. I SHOULD HAVE NOT ALLOWED THIS DISTR TO OCCUR AND MUST EXERCISE GREATER ATTN TO DUTY OF FLYING.

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.