What was found
'NO FLIGHT', FOUND DURING 'HEAVY 2 MAINTENANCE CHECK' AT TIMCO HEAVY MAINTENANCE FACILITY (OSCODA MI). VERTICAL STABILIZER FORWARD SPAR CORRODED AT FS 55R. REMOVED DAMAGED AREA IAW ENGINEERING DEVIATION REQUEST B2-07305. PERFORMED HFEC AND LIGHT INSPECTION IAW B 727 NDT MANUAL PART 6 FIG 23. NO DEFECTS NOTED. FABRICATED REPAIR ANGLES AND FILLERS AND INSTALLED IAW EDR B2-07305. AIRCRAFT RETURNED TO SERVICE. (X)