What was found
DISCOVERED DURING MAINTENANCE INSPECTION FOR PRESSURIZATION PROBLEM. MAINTENANCE FOUND THE FUSELAGE SKIN TO BE CRACKED ALONG THE RT SIDE OF THE NR 1 COMM ANTENNA. THE CRACK WAS 7 IN LONG, EXTENDING FROM APPROX FS 213.00 TO FS 220.750 RUNNING PARALLEL TO THE ANTENNA DOUBLER IN BETWEEN (STRINGERS) 1 AND 2R. REPAIRED CRACK IN FUSELAGE SKIN BETWEEN FS 213.00 AND FS220.75. STOP DRILLED CRACK AT ALL ENDS, ONE CUT AWAY AREA APPROX. 2 INCHES BY 4 INCHES FABRICATED EXTERNAL DOUBLER(.040 INCH 2024-T3) AND FILLER (.025 INCH 2024-T3) INSTALLED DOUBLER AND FILLER WITH HYSOL EA9309.3NA IAW THE MFG INSTRUCTIONS. INSTALLED RIVETS WET WITH SEALANT. THERE IS AN EXISTING INTERNAL DOUBLER THAT IS REMOVED AND REINSTALLED. ALL A