Right hand main landing gear brake tubes

Written By Marie-Laurence Bellerive

Effectivity: Learjet 40/45/70/75 aircraft 

ATA Code: ​32 - Landing Gear​ 

By:  Tj Will – Field Support Engineering 

Bombardier would like to inform operators of a recent service bulletin regarding replacement of hydraulic brake tubes on the right-hand main landing gear (RH MLG).   

Optional Service Bulletins 40-32-26, 45-32-44, 70-32-11, and 75-32-11, released on Sept. 22, 2025, provide instructions on how to install new inboard and outboard brake tube assemblies, with improved routing, on the RH MLG to alleviate chafing on the strut. The new tubes are a different configuration and must be replaced in pairs; individual tubes are not spare replacements.    

For additional information or questions, please contact your regional Field Service Representative.

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Marie-Laurence Bellerive
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