ASFKAP,
You will never ever receive that letter
Maybe not all airlines but mine will produce that letter to cover a deviation from the AMM.
After consultation with Tech Services dept., QA and manufacturer if necessary a letter would be produced that contains itemed instructions for the engineer to adhere to for despatch.
Serialised, time limited and named with a copy to be kept within the tech log for the crews reference.
This has deviated from the original post, so I apologise but going back to the reverser I would have a look in the AMM 71 for any possible relief, cable removal was previously included and screw jacks for some engine types. Finally T/R locked out IAW MEL.
Repeating the comment of GE not allowing two bolts on the lock out plates, there are only two bolts fitted per plate.
I asked GE if one bolt out of the four plates could be ommitted as one anchor nut was damaged and I again had a curt NO....
Lloyd, PM me and I will give you details of T/R lockout procedures and where to look...
And happy New Year from TW