Narrative:

During takeoff; equipment overheat light and EICAS advisory appeared accompanied by numerous system failures. Determination was made to return to ZZZ and land overweight. Emergency declared; vectors received; landing normal. No known ATC abnormalities or issues.

Google
 

Original NASA ASRS Text

Title: B757-200 EQUIPMENT OVERHEAT LIGHT ILLUMINATED DURING TKOF. EQUIPMENT FAILURES RESULTED; FLT CREW DECLARED AN EMER AND RETURNED TO DEP ARPT.

Narrative: DURING TKOF; EQUIP OVERHEAT LIGHT AND EICAS ADVISORY APPEARED ACCOMPANIED BY NUMEROUS SYS FAILURES. DETERMINATION WAS MADE TO RETURN TO ZZZ AND LAND OVERWT. EMER DECLARED; VECTORS RECEIVED; LNDG NORMAL. NO KNOWN ATC ABNORMALITIES OR ISSUES.

Data retrieved from NASA's ASRS site as of May 2009 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.