What was found
ON CLIMBOUT, THE RIGHT ENGINE SURGES WITH CTOT ON AND OFF. COMPLIED WITH QRH AND RETURNED TO DTW. MAINTENANCE REPLACED RIGHT ENGINE HMU, OPS AND LEAK CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ON CLIMBOUT, THE RIGHT ENGINE SURGES WITH CTOT ON AND OFF. COMPLIED WITH QRH AND RETURNED TO DTW. MAINTENANCE REPLACED RIGHT ENGINE HMU, OPS AND LEAK CHECK GOOD.