What was found
SUPPLEMENTAL C/A FOR MECH. NO1 BLEED OVERHEAT /DIVR MCI . BLEED 1 OVERTEMP POSTED WHEN SWITCHING FROM APU BLEED TO ENGINE BLEEDS ABOUT 17,000 FT ALSO HAD A BURNING SMELL CLOSED ENG 1 BLEED PER QRH AND MESSAGE AND SMELL WENT AWAY.-C/A- RAR LH ACM. C/W ETN-EM-72-034. NO DISCREPANCIES NOTED.C/W N670 PRELIMINARY TRIAD WORK SCOPE 4-28-22. FOUND LH ACM SEIZED. NO CRACKED / DAMAGED / MISSING BLADES OR ROTOR CONTACT NOTED. SEE LGPG 4865479/2 FOR LH ACM RAR