What was found
LH WING TRAILING EDGE AT O/B FLAP ROLLER GUIDE AT APPROX W.S.163 IS CHAFFED. (C-CHECK RO 8/6/2021) REMOVED CHAFE, FOUND TO BE OUT OF LIMITS. REMOVED AND INSTALLED NEW FITTING ( ROLLER GUIDE ) P/N CC670-17069-1 AT LH WING TRAILING EDGE FOR THE O/B FLAP AT APPROX. WS 163. REF: CRJ-700 SRM 51-42-21-001-001-A01, CRJ-700 SRM 51-42-06-001-001-A01, CRJ-700 SRM 51-42-15-001-001-A01 AND DWG. CC670-14600 REV-C, OPS TEST GOOD, SEE CONTINUE CARD FOR DETAILS. COMPLIED WITH TASK CARD 51-900-1002-SKY.