As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE SMELL OF BURNING RUBBER ENTERED THE FLIGHT DECK. WE CONTINUED THE CLIMB AND DECIDED TO DECLARE AN EMERGENCY AND DIVERT TO BHM. NO EICAS MSSGS, NO SMOKE, NO INDICATION OF A FIRE. UNEVENTFUL LANDING.R&R FLEXIBLE RESTRAINT ON R/H ACM & DUCTING. PACK OPS CHK GOOD. REF AMM 21-00-00-862-001.