What was found
FUSELAGE STATION BS1640 TO BS 1681 AT LBL50, CORROSION ON L-4 DRAIN PAN AREA. INTERCOSTAL CORRODED OUT OF LIMITS - REPLACED INTERCOSTAL (PN 146N5246-7). SUPPORT CORRODED OUT OF LIMITS, REPLACED SUPPORT (PN 146N5246-5).
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FUSELAGE STATION BS1640 TO BS 1681 AT LBL50, CORROSION ON L-4 DRAIN PAN AREA. INTERCOSTAL CORRODED OUT OF LIMITS - REPLACED INTERCOSTAL (PN 146N5246-7). SUPPORT CORRODED OUT OF LIMITS, REPLACED SUPPORT (PN 146N5246-5).