What was found
PDX - LEFT HAND NR 4 FLAP TRACK OUTBOARD UPPER FLANGE HAS PITTING CORROSION. REPAIRED IAW RD 8-57-988.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - LEFT HAND NR 4 FLAP TRACK OUTBOARD UPPER FLANGE HAS PITTING CORROSION. REPAIRED IAW RD 8-57-988.