What was found
ELECTRICAL BURNING ODOR. PERFORMED HIGH POWER ENGINE RUNS ON BOTH ENGINES. EACH ISOLATED WITH ASSOCIATED PACK AND BOTH ENGINES PART POWER ALL SYS NORMAL, NO ODOR NOTED. R & R FWD FILTER ELEMANTS 5250HG. 5251HG IAW AMM 21-21-41, 186017. R & R AFT FILTER ELEMENT IAW AMM 21-21-41. AFTER FILTER CHANGE RAN ALL CHILLERS, COFFEEMAKERS AND OVENS. NO ODOR NOTED AFTER 20 MIN. REMOVED AND REINSTALLED LD-MCR IAW AMM 25-75-41. TEST OK IAW AMM 25-75-41, 400-801A.