What was found
AIRCRAFT 3877, UPON ARRIVAL AT DEN ON 23OCT2022, MTC REPORTED BIRDSTRIKE EVENT AFFECTING THE RHS FWD FUSELAGE SKIN. THE DAMAGE CONSISTS OF A DENT CONTAINED WITHIN STRINGERS S-10R TO S-11R AND FRAMES STA 259.50 TO STA 277.00. THE DENT IS 5 UP/DN, 14 FWD/AFT AND WITH A MAX. DEPTH OF 0.253. THE DENT IS OUT OF LIMITS PER B737-900ER 53-00-01-1A FOR NUMEROUS REASONS; 1) THE DENT MAXIMUM DEPTH IS GREATER THAN 0.25"; 2) A/Y RATIO IS LESS THAN 30 AT THE DEEPEST POINT OF THE DENT; AND 3) THERE IS A CREASE PRESENT AT THE AFT EDGE OF THE DENT, JUST FWD OF STA 277.00. THE CREASE MEASURES 3.5 UP/DN. CORRECTIVE ACTION: REMOVED DAMAGED AREA, AND INSTALLED REPAIR DOUBLER, TRIPLER, AND STRUCTURAL FILLER PER ER/A 613196-14. (LP 9354118)