As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF CREW HEARD A BANGING NOISE ON ROTATION. CREW DECLARED EMERGENCY & RETURNED WITHOUT INCIDENT. SUSPECT, ENGINE COMPRESSOR STALL AFTER TAKEOFF ROTATION, LOUD BANDING NOISE ACFT SWAY TO LT AND RT. R & R LT ENGINE IAW WORK CARD 71-001 AND 71-002, OPS CHECK GOOD.