As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE 1 BLEED LEAK OCCURED IN CLIMB AFTER T/O. FLIGHT RETURNED. OVERWEIGHT LANDING AT APPROX 47.8. FOUND PRECOOLER EXHAUST DUCT SEAL ADRIFT. SEAL REPLACED. PRECOOLER REPLACED IAW AMM. FUNCTION CHECK CARRIED OUT. NO FAULTS. CONSIDERED SERVICEABLE.