D TO MODIFICATION • B. Boeing 727 Service Bulletin 727-53A0171, dated December 14, 1989. Subject: Fuselage - Station 1182 Pressure Bulkhead web, Crack Repair and Preventive Modification • C. D. The aircraft empty weight and center of gravity was revised in accordance with Boeing Weight and Balance Man

ded to modification. B. Boeing 727 Service Bullekln 127-53A0171, dated December 14, 1989. Subject: Fuselage - Station 1182 Pressure Bulkhead Web, Crack Repair and Preventive Modification EXHAUST Engine Strut controls Instl. E.O.: 002 Flt Deck Indicator Instl. T/R Sys. E.0.• 003, 004 Thrust Reverser Sys

ADDED TO MODIFICATION Boeing 727 Service Bulletin 727-53A0171, dated December 14, 1989 SUbject: Fuselage - Station 1182 Pressare Bulkhead web, . Crack Repair and Preventive Modification • • . . , C.. The aircraft empty weight and center of gravity was revised in accordance with Boeing Weight and Ba