As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN H-CHK AT STAG, CORROSION WAS NOTED ON THE FAIL SAFE AT BS 1197+154 BETWEEN S39L AND S39R. ER/A 631843-14 SECT. I REPAIR WAS ACCOMPLISHED. FOLLOW ON ACTION IS REQUIRED FOR DTE. ASSOCIATED ER/A 74-631843 ADDED FOR AC 1801 (1429898)