As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KEEL BEAM AT FR. STA 727 HAS CORROSION AT BELLY DRAIN. GROUNDED - YES. REMOVED DOUBLER IAW B737-900ER SRM 51-40-02.REMOVED CORROSION, NO DAMAGE PERMITTED . FOUND TO BE OUT OF LIMITS .FABRICATED NEW DOUBLER IAW BAC DWG 146A3239.INSTALLED DOUBLER IAW BAC 146A3239 & 146A0070 WITH B737-900ER SRM 51-40-02.