As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORTED A BURNING RUBBER SMELL AFTER TAKEOFF. TROUBLESHOOTING PERFORMED ON WO 252674. LT PRESS REGULATING & SOV IDENTIFIED AS FAULTY. R & R LT PRSOV. OPERATIONS & LEAK CHECKED GOOD IAW AMM 21-31-01. THIS ACFT OK FOR CONTINUED SERVICE.