As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DOOR CAUTION MSG AFTER TAKE OFF. FA AND AFT FA REPORT A STRONG BURNING ODOR AT THE SAME TIME DURING TAKE OFF . RAN APU DOOR CAUTION QRH FAULT PERSISTED / REMOVED AND REPLACED RH RECIRCULATION FAN IAW AMM 21-22-10-000/400 801-A01. LEAK TEST PASS OP TEST GOOD NO DEFECTS NOTED.