What was found
DURING DECENT FOR APPROACH, WITH SPEED BRAKES DEPLOYED. AIRCRAFT MADE AN UNCOMMANDED RIGHT ROLL WITH NOTICEABLE BANK. T/S IAW TSM 27-10-00-810-842A, PERFORMED OPS TEST OF BOTH ELACS 1 & 2. TESTED OK. PERFORMED ELAC TEST IAW AMM 27-93-00-710-001-A. PERFORMED LAND TEST IAW AMM 22-97-00-710-001-A. TEST PASSED OK. PERFORMED EFCS 1 & 2 BITE TEST IAW AMM 27-96-00-740-001-A. BITE TESTED GOOD, POST FLIGHT REPORT SHOWS NO FAULTS RELATED TO ISSUE. REMOVED & REPLACED ELAC 1 COMPUTER IAW AMM 27-93, OPS TEST PASSED. NO FAULTS ON EITHER ELAC COMPUTERS. STEP 2 OF A320 TSM 27-10-00-810-842A C/W. (LP: 8799194, AIRCRAFT WAS GROUNDED)