As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF SJU EXPERIENCED RUMBLING NOISE IN NOSE WHEEL WELL. RETURNED TO SJU AND LANDED WITHOUT INCIDENT. INSPECTION REVEALED COVER CURTAINS INSIDE NOSE WHEEL WELL WERE DETACHED. SECURED CURTAINS AND RETURNED AIRCRAFT TO SERVICE. (M)