US aviation regulators have ordered airlines to inspect certain Pratt & Whitney engines on Boeing jets for invisible cracks before the planes are flown again.
The US Federal Aviation Administration issued an emergency airworthiness directive on Tuesday related to the PW4000-112, an engine used in about 8 per cent of Boeing’s 777 aircraft. The order came three days after an engine on a 777 broke apart four minutes after take-off, scattering debris over a Denver suburb.
No one aboard United Airlines flight 328 or on the ground was injured, but planes using the engines from P&W, a division of Raytheon Technologies, were effectively grounded in the wake of the incident.
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