What was found
AFTER TAKEOFF PASSING 1000 FT, THICK WHITE SMOKE WHICH HAD A BURNING ODOR TO IT, STARTED TO POUR OUT OF VENTS IN BOTH CABIN & COCKPIT. SHUTOFF BOTH PACKS & SMOKE STOPPED. HAD JUST DEICED BUT THIS WAS NOT NORMAL SWEAT ODOR. STARTED APU & TURNED ON PACKS. RAN APU FOR APPROX. 30 MINS & NO SMOKE OR ODOR NOTED. STARTED BOTH ENGS & TURNED ON BLEED AIR & NO DEFECTS NOTED. ADJUSTED TEMPERATURE BACK & FORTH & CYCLED PACKS & BLEED VALVES. NO SMOKE OR ODOR NOTED. RAN ENGS FOR APPROX 1 HR, NO DEFECTS NOTED. SHUTDOWN ENGS & APU, POWERED DOWN ACFT. PERFORMED LT/RT HI POWER ENG RUNS IAW POH & DID NOT NOTE ANY BLEED OR PACK ISSUES, NO SMOKE OR UNUSUAL ODORS NOTED. LT ENGINE PENALIZED 1 CYCLE. NEW CYCLES TO READ 3761. RT ENGINE PENALIZED 1 CYCLE. NEW CYCLES TO READ 3856. PERFORMED LT & RT ACM CHKS IAW AMM 21-51-00. BOTH LT & RT FAILED CHKS, BOTH TURBINES ARE SEIZED WITH MULTIPLE BLADES DAMAGED. REMOVED ALL CLAMPS FROM RT ACM. INSTALLED ACM, & CLAMPS ON 2 FWD LOWER TUBES IAW AMM 21-51-16. REMOVED LT ACM & INSTALLED REPAIRED ACM IAW AMM 21-51-16. ORIGINAL SUBMISSION DATE: 11-27-2023.