What was found
THE OUTER LOWER SKIN IS CHAFED BETWEEN FS 897 AND FS 913 STGR 27. UPON FURTHER INVESTIGATION DAMAGE WAS FOUND TO BE ON AN EXISTING DOUBLER AT F.S. 897 - F.S. 913 INSTALLED TO ENDEAVOR EA CRJ953-11279 REV IR. DAMAGE WAS FOUND TO BE OUT OF LIMITS PER ENGINEERING AND THE DOUBLER REQUIRED REPLACEMENT. ENDEAVOR EA CRJ953-11279 REV A WAS NOT COMPLIED WITH BUT USED AS A REFERENCE FOR MATERIAL CALL-OUT, REPAIR DESIGN AND FABRICATION / INSTALL REFERENCES. THE REPAIR DOUBLER PO# 5-23901 WAS REMOVED, FABRICATED, INSTALLED AND PAINTED IAW CRJ-900 SRMS 51-14-06-001-001-A01 TEMP REV. 51-0071, 51-42-21-001-001-A01, 51-23-00-001-001-A01, 51-42-00-001-001-A01 AND 51-21-16-001-001-A01 TEMP REV, 51-0068.