EASA Regulations for Pratt & Whitney Canada PW308

EASA AD CF-2022-22

Engine — Combustion Chamber Outer Case — Inadequate Fatigue Life of Forward Flange Bolts

Canadian Airworthiness Directive CF-2022-22 addresses the inadequate fatigue life of forward flange bolts on Pratt & Whitney Canada PW308A and PW308C engines. The directive mandates modifications to the combustion chamber outer case and inner bypass duct, along with the replacement of specific flange bolts to prevent potential bolt fractures. This AD applies to PW308A engines with build specifications BS935 and BS1249, and PW308C engines with BS1047 and BS1238.