Pratt & Whitney have announced that they are reducing the front hub life limits on both the PW1500G and the PW1000G geared turbofans.
The decision comes following excessive corrosion being discovered during an overhaul the Federal Aviation Authority (FAA) has announced. According to the regulator P&W found the issue “during a routine overhaul” and the issue itself was found beneath the anti-corrosion coating on the part. Whilst any issue will reduce the fatigue life of the part it is worth noting that the issues “can occur even during engine downtime,” the FAA said.
Over recent months P&W have released service bulletins over recent months informing operators of the problems however this announcement by the FAA is what is called a notice of proposed rulemaking (NPRM), essentially mandating the new life limits in regulation.
The PW1500G is the exlusive engine option for the Airbus A220 family of aircraft, formally known as the Bombardier C-Series whilst the PW1900G powers the Embraer E-Jet E2 family of aircraft. It is currently unknown if other engines in the PW1000G family will be placed under similar restrictions
Nick Ashwell-Rice has worked in aviation and defence journalism since 2014 whilst also maintaining a career outside of the industry. He has been Editor-in-Chief at Talking Aero since its inception