Originally Posted by
LaissezPasser
A lot of readers missed this crucial point in the report. It’s more than 353 actuators. That’s just the number Collins sent to Boeing, and that Boeing delivered on airplanes. ........ As a result, there could be additional Boeing 737 airplanes beyond those 25 delivered by Boeing [to US operators] that have incorrectly assembled bearings in their SVO-730 rudder rollout guidance actuators, and it is essential that this possibility is clearly addressed.
Good point but I guess that's covered by the last 2 Recommendations as that should include any which have been changed post delivery and now have an affected actuator fitted. Maybe the NTSB could have specified "..... actuators currently fitted to ....." as that would include original fit and replacement items. Presumably Collins have a list of all affected Serial/Part No's. How many others depends on the number of replacements in the field. One would suspect probably not that many (assuming it has a low failure rate) but it should be fairly simple to work that out. For a while I ran a team (Military) where we often got asked to locate specific items (ie given Serial/Part no(s)) fitted or in stock. Usually the longest part of the process was boiling the kettle for a coffee ahead of the asset database search. True, it depends on the airlines at the end of the day knowing what work they have done since they took delivery.
