![jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange](https://i.stack.imgur.com/K9MC2.jpg)
jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange
![08 de junio de 2018, Alemania, Dahlewitz: Warren East, CEO de Rolls-Royce, de pie ante un recién desarrollado y acabado business-motor Jet Pearl 15 durante una ceremonia en el 25 aniversario de 08 de junio de 2018, Alemania, Dahlewitz: Warren East, CEO de Rolls-Royce, de pie ante un recién desarrollado y acabado business-motor Jet Pearl 15 durante una ceremonia en el 25 aniversario de](https://c8.alamy.com/compes/mytddj/08-de-junio-de-2018-alemania-dahlewitz-warren-east-ceo-de-rolls-royce-de-pie-ante-un-recien-desarrollado-y-acabado-business-motor-jet-pearl-15-durante-una-ceremonia-en-el-25-aniversario-de-la-planta-dahlewitz-rolls-royce-foto-bernd-settnik-dpa-zentralbild-dpa-mytddj.jpg)
08 de junio de 2018, Alemania, Dahlewitz: Warren East, CEO de Rolls-Royce, de pie ante un recién desarrollado y acabado business-motor Jet Pearl 15 durante una ceremonia en el 25 aniversario de
![jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange](https://i.stack.imgur.com/1hCGf.jpg)
jet engine - What are these painted lines on the fan blades of the Rolls-Royce Pearl 15? - Aviation Stack Exchange
Pearl 15 | Our new #Pearl15 engine perfectly exemplifies our #IntelligentEngine vision with the world's most advanced Health Monitoring System. Watch to discover... | By Rolls-Royce plc | Facebook
![08 de junio de 2018, Alemania, Dahlewitz: Alastair McIntosh (R), director gerente para Alemania, mostrando Warren East, CEO de Rolls-Royce, recientemente desarrolladas y terminado el negocio de motores jet Pearl 15 durante 08 de junio de 2018, Alemania, Dahlewitz: Alastair McIntosh (R), director gerente para Alemania, mostrando Warren East, CEO de Rolls-Royce, recientemente desarrolladas y terminado el negocio de motores jet Pearl 15 durante](https://c8.alamy.com/compes/mytd5k/08-de-junio-de-2018-alemania-dahlewitz-alastair-mcintosh-r-director-gerente-para-alemania-mostrando-warren-east-ceo-de-rolls-royce-recientemente-desarrolladas-y-terminado-el-negocio-de-motores-jet-pearl-15-durante-una-ceremonia-en-el-25-aniversario-de-la-planta-dahlewitz-rolls-royce-foto-bernd-settnik-dpa-zentralbild-dpa-mytd5k.jpg)