![Global Express – Fixed Cowl Chafing](https://www.weststaraviation.com/wp-content/uploads/2023/04/global_express_fixed_cowl_chafing.jpg)
![Global Express: Fixed Cowl Chafing](https://www.weststaraviation.com/wp-content/uploads/2023/04/global_express_fixed_cowl_chafing_post-1024x538.jpg)
During engine R&R or during a 120/240-month inspections, West Star Aviation has been discovering chafing of the fixed cowl on Global aircraft from a bleed air clamp. This chafing has been observed roughly 15 to 18 times over the past two years.
The issue requires a Technical Variance, in which Rolls-Royce will either call out a repeat inspection of the area. Technical Variance normally requires a reoccurring inspection of the chaffed area every 50 Flight hours up to 200 flight hours. At 200 flight hours a blend or weld repair will be required. If weld repair is required, the engine and fixed cowl must be removed in order to complete the weld.
In some instances, Rolls-Royce may require an immediate repair if the chafe is too deep. The repair for this issue is a titanium weld repair, with the process taking about 7 to 9 working days.
For more detailed information, please contact one of the West Star Aviation Global Specialists listed below.
![Robert Peyman](https://www.weststaraviation.com/wp-content/uploads/2018/08/peyman-robert.jpg)
Robert Peyman
Technical Sales Manager
Challenger & Global
(ALN)
Tel 618.258.8090
rpeyman@wsa.aero
![George Laiten](https://www.weststaraviation.com/wp-content/uploads/2016/09/laiten-george.jpg)
George Laiten
Director of Bombardier Product
Development
Cell 618.798.1173
glaiten@wsa.aero
![Jeff Olson](https://www.weststaraviation.com/wp-content/uploads/2016/10/jeff-olson.jpg)
Jeff Olson
Challenger Program Manager
(GJT)
Tel 970.248.5254
jolson@wsa.aero
![Steve Smith](https://www.weststaraviation.com/wp-content/uploads/2022/01/Steve-Smith-1-_MG_2797-Copy1.jpg)
Steve Smith
Challenger/Global Program Manager
(CHA)
Cell 423.356.0325
stsmith@wsa.aero
![Randy Miller](https://www.weststaraviation.com/wp-content/uploads/2021/05/randy-miller.jpg)
Randy Miller
Technical Sales Manager Challenger & Global
(GJT)
Tel 970.248.5270
rmiller@wsa.aero
![Jeff Messmer](https://www.weststaraviation.com/wp-content/uploads/2018/01/messmer-jeff.jpg)
Jeff Messmer
Technical Sales Manager
(PCD)
Cell 314.607.4069
jmessmer@wsa.aero
![Larry Marler](https://www.weststaraviation.com/wp-content/uploads/2022/01/Larry-Marler-2-_MG_2823-Copy1-compress.jpg)
Larry Marler
Technical Sales Manager
(CHA)
Tel 423.598.1578
lmarler@wsa.aero
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