As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HORIZONTAL STAB UPPER REAR SPAR TOP FLANGE BOTTOM SIDE CORRODED AT 4EA NUTPLATE HOLES LOCATED 6 TO 18 INCHES OTBD OF FUSELAGE BETWEEN RIBS 3 AND 5 MEASURED 8 SQ INCHES. REMOVED CORROSION IAW A SRM 51-74-10, FOUND TO BE OUT OF LIMITS IAW SRM 55-10-00 CONFIG 1, FIG 101 SH 2 PG 103. REPAIRED SPAR IAW SRM 55-11-21 FIG 211 PG 265/266 AND FIG 217 PG 299 - 306.