BOEING 777 FAN COWL WATER INGRESS

TO PROTECT & TO SAVE

The Air France-KLM Group is one of the largest Boeing 777 operators in the world. As an airline’s MRO and through an extensive technical development program, we have acquired unparalleled resources and expertise in GE90 engine nacelle maintenance.

With our state-of-the-art facilities and wide-ranging in-house repairs, we provide operational support to our customers. We can offer solutions from support programs (Powered By Hour) to efficient closed loop process with flat rates or T&M prices (Powered By Event). During Fan Cowls GE90 inspections, water penetration inside the cowling was observed on aircraft, causing significant degradation of the structure. From 335 GE90-115 fan-cowl inspections, 32 operators reported 289 fluid ingression findings. 108 of these were found to be beyond economical repair. If 108 could not be saved, 227 can still be saved. It’s a no brainer… Anticipate to save your assets!

WAKE-UP CALL BEFORE NIGHTMARE

In 2020, Boeing launched a service bulletin after finding water ingress inside GE90 fan cowls. In accordance with our mantra «repair rather than replace whenever possible», we developed our own repair process approved by our part 21J Design Office, to avoid excessive cost. We perform a thermographic inspection to evaluate how to treat the trouble: permanent protection, composite repair with permanent protection or panel replacement.