What was found
3-5 MINUTES AFTER THE LEFT ENGINE START, BURNING ODOR OBSERVED AT ROW 3 AND ROW 15 IN THE CABIN BY CREW. NO MEDICAL ATTENTION WAS REPORTED. / REMOVED AND REPLACED ACM IAW AMM 21-51-18-000-801, 21-51-20-000-801, 21-51-08-000/400-801, OP€™S CHECK GOOD IAW 21-51-00-710-801, LEAK CHECK GOOD IAW 21-51-00-790-801.