As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 941 - MTY-MEX - AIRCRAFT RETURNED TO GATE, DUE TO PNEUMATIC LEAKAGE IN LEFT ENGINE. DURING REVISION IT WAS FOUND A CLAMP BROKEN OF THE 13TH STAGE AND A FOLDED PIPELINE OF THE SAME STAGE. CLAMPS AND ANTI-ICE DUCT WAS SENT TO SUCH STATION. PIPELINE AND CLAMPS WERE REPLACED IAW MM 75-10-05, TESTS OK. (M)