Simplified version of the SB 72-0515 Rev 3. Print it out and hide under that
engine !
J-hook inspection page
This page contains information collected from several sources to help you understand and learn about the J-hook borescope inspections on the CFM56-7B.
The CFM56-7B SB 72-0515 REV 3 ( J-hook inspection or HPC stator-to-rotor contact ) calls for an inspection which is very difficult to do, and even more difficult to judge after you find damage, to make the decision to remove the engine or not.
Feel free to send in your own information and photographs or videos. Contact information is available via the homepage and can be done by e-mail, the input-form or on the forum.
Simplified version of the SB 72-0515 Rev 3. Print it out and hide under that
engine !
Short
video to show stage 3 segments movement because of worn VSV bushings.
