Narrative:

[A330] heavy departed 28R full length followed by [B757] departing 28R full length. [B757] reported a wake turbulence event off the departure end with no issues. [A330] was more than 5 miles for proper wake turbulence separation. Event was reported to on duty supervisor with no further incident.

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Original NASA ASRS Text

Title: ORD Tower Controller reported receiving a report from a departing B757 flight crew that they encountered wake turbulence after takeoff five miles in trail of an A330.

Narrative: [A330] heavy departed 28R full length followed by [B757] departing 28R full length. [B757] reported a wake turbulence event off the departure end with no issues. [A330] was more than 5 miles for proper wake turbulence separation. Event was reported to on duty supervisor with no further incident.

Data retrieved from NASA's ASRS site 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.