As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 4510 - DURING CLIMB-OUT, CREW NOTED ENGINE BLEED 1 LEAK IND. DURING THIS A LOUD NOISE WAS HEARD FROM AFT AREA. CREW RETURNED TO LGA SAFELY. NO FURTHER INCIDENTS WERE REPORTED. REMOVED AND REPLACED DUCT IAW AMM. OPS CHECK GOOD. (M)