As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF JUST PRIOR TO ROTATION, FLIGHT DECK DOOR FLEW OPEN AND JAMMED OPEN. TESTED DOOR LOCK MECHANISM, OPS CHECKED GOOD IAW AMM 52-50-01. WHEN DOOR FLEW OPEN IT JUMPED THE STOPS. SECURED HARDWARE TO STOPS IAW AMM 20-30-01. ACFT RETURNED TO SERVICE.