The latest problem adds another layer to the woes of Pratt, which is owned by Raytheon Technologies Corp. The new engine for narrow-body jets has cost $10 billion to develop but has faced delivery delays and multiple issues leading to mid-air shutdowns. IndiGo, the biggest customer for Airbus’s best-selling A320neo, decided last year to switch away from the engines, placing a $20 billion order instead with rival CFM International Inc., a venture between General Electric Co. and France’s Safran SA.
Outside of durability issues and delivery delays, Indian regulators have been concerned about Pratt’s so-called third-stage low-pressure turbine blades.
India, where the most popular narrow-body market is dominated by the A320neo, mandated in 2019 that all engines must modify that particular component with a different material “less susceptible to impact damage.” Without that tweak, such as was implemented on the GoAir jet, pilots are at risk of one or more engines failing, losing control or worse, crashing the aircraft, according to the DGCA.
It wasn’t immediately clear how many passengers were on board the jet that took off from the southern Indian city of Hyderabad. The plane, registered VT-WGK, didn’t fly again until Oct. 8, data from flight tracking website flightradar24.com show.
India last month ordered GoAir to ground jets that hadn’t had their Pratt engines modified to the specifications mandated by the DGCA.
IndiGo, operated by InterGlobe Aviation Ltd., had already modified all of its engines after regulators granted repeated extensions to meet requirements. Commercial jets can typically fly on one engine even if the other fails.