Narrative:

I was mistaken and flew over the cleveland TCA at 7500' (heading east) instead of 8000' plus. Chicago TCA and new york TCA are at 7000' so I thought 7500' over cleveland was enough, I was wrong. I only saw one airplane over and around the TCA.

Google
 

Original NASA ASRS Text

Title: GA SMA UNAUTH PENETRATION OF CLR TCA.

Narrative: I WAS MISTAKEN AND FLEW OVER THE CLEVELAND TCA AT 7500' (HDG E) INSTEAD OF 8000' PLUS. CHICAGO TCA AND NEW YORK TCA ARE AT 7000' SO I THOUGHT 7500' OVER CLEVELAND WAS ENOUGH, I WAS WRONG. I ONLY SAW ONE AIRPLANE OVER AND AROUND THE TCA.

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.