What was found
PIT - DURING RON, FOUND CORRODED AREA 4 INCH BY 5 INCH AT TCAS ANTENNA, FUSELAGE SKIN BETWEEN STATION 237 AND STATION 258 LONGERON 29RT TO 29 LT. INSTALLED EXTERNAL DOUBLER AND REPLACED TCAS DOUBLER PER SRM 53-04 FIG 51 CLASS 2 REPAIR. (M)