Adding to the challenges: new inspections needed on a class of Airbus planes that may suffer from microscopic "contamination" of metals used to manufacture Pratt & Whitney engines. ‘MICRO CONTAMINATION’ A Pratt & Whitney PurePower PW1100G-JM engine is displayed at the Singapore Airshow in Singapore on Feb. 15, 2012. Adding to the challenges: new inspections needed on a class of Airbus planes that may suffer from microscopic ‘contamination’ of metals used to manufacture Pratt & Whitney engines. The defect could affect 1,200 Pratt engines made between late 2015 and mid-2021. The company is "still assessing the longer-term impact with Pratt & Whitney," said Chief Financial Officer Ursula Hurley.
