PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures
Old 9th Dec 2019, 22:54
  #4363 (permalink)  
Join Date: Aug 2013
Location: Washington.
Age: 69
Posts: 517
Originally Posted by tdracer View Post
Nice post, too bad it's almost entirely wrong.
There is something called the "Changed Product Rule" or CPR (and before you get on about the FAA, CPR has been completely harmonized with EASA).
CPR basically says that when you make a major change to an aircraft (and new engines qualify), anything that is changed has to step up to the latest regulations.
If you bother to check the MAX TCDS, you'd find precious few regulations date back to the original 737 TCDS (mainly having to do with structures).
For all the problems with the MAX, the regulations it was certified to are not one of them.
Correcto-mundo. But the CPR is part of the problem. It needs to be simplified and it needs to lead to a much less gerrymandered certification basis.
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