What was found
VERTICAL STABILIZER INTERIOR REAR SPAR HORIZ STIFFENER BETWEEN RIB 9 AND RIB 10 HAS CORROSION ABOUT 3 SQ INCHES. REMOVED HORIZ STIFFNER AND DIAGONAL STIFFNER BETWEEN RIB 9 AND 10 AT VERT STAB REAR SPAR. REMOVED CORROSION ON HORIZ STIFFNER, NOMINAL 0.050, REMAINING 0.047, LOSS .003, DIAGONAL STIFFENER, NOMINAL 0.063, REMAINING 0.054, LOSS 0.009, SKIN 0.055, REMAINING 0.054, LOSS 0.001. ALL AREA WITH LIMITS IAW SRM 55-30-00, FIG 101. REPROTECTED AREA AND REINSTALLED STIFFENERS IAW SRM 51-40-21, PG 22 AND 55-60-21, PG 26.