Fixing the knife-edge seal problem

摘要

IRONICALLY, THE action by the Indian DGCA came two weeks after a February 21 announcement by UTC CEO Hayes to financial analysts that Pratt & Whitney had already resolved the new PW1100G-JM technical issue by replacing the modified knife-edge seals with seals of the previous design. The December modification to the knife-edge seal "did not play out as expected", Hayes admitted, but he added that Pratt & Whitney had resolved the issue - obtaining approval for the fix from EASA and Airbus in the process - and had already resumed PW1100G-JM production by February 21.