As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD POP WHEN RAISING GEAR ON TAKEOFF. AS WE PICKED UP SPEED, LOUD VIBRATION AND ALL ENGINE INDICATIONS WERE NORMAL. FOUND NLG DRAG BRACE BROKEN. REMOVED SAME. FOUND DRAG BRACE BEARINGS BINDING. REMOVED BEARINGS. INSTALLED NEW DRAG BRACE AND BEARINGS.