What was found
*L/H INBD GRND SPOILER ATTACHING HARDWARE CORRODED (MARKED) (C-CHECK RO 8/1/2021) REMOVED THE LH INBD GROUND SPOILER PCU TO LINK HARDWARE REF. CRJ200 AMM 27-63-01-000-801 STEP 3B(1&2) ONLY ORDERED, RECEIVED AND REPLACED THE LH INBD GROUND SPOILER PCU TO LINK HARDWARE REF. CRJ200 AMM 27-63-01-000-801 STEP 2B(3&4) ONLY. OP'S TEST GROUND SPOILERS FAILED, SEE JOB 27770101 OP 444 CP 23133644. FOR TESTING AND TROUBLESHOOTING.