This Special Airworthiness Information Bulletin (SAIB) is written to announce the availability of an industry and government developed best practice guide (BPG). The BPG is titled: “Best Practices Guide for Maintaining Exhaust System Turbocharger to Tailpipe V-band Couplings/Clamps”.

SUMMARY: We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Models PA-46-600TP (M600) airplanes. This AD requires inserting temporary airspeed limitations into the pilot's operating handbook, installing a temporary placard, inspecting rivets on the cockpit canopy above the left and right cockpit side windows, and installing a repair kit based on the findings of the rivet inspection. This AD was prompted by a report of undersized fasteners installed during manufacturing. We are issuing this AD to address the unsafe condition on these products. 

This Special Airworthiness Information Bulletin (SAIB) informs registered owners/operators of an airworthiness concern for aircraft equipped with Aspen EFD1000 primary flight display under Supplementary Type Certificate (STC) SA10822SC. 

We are superseding Airworthiness Directive (AD) 2018-02-05 for certain Piper Aircraft, Inc. Models PA-28-140, PA-28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-28-236, PA-28-201T, PA-28R-180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-28RT-201, and PA-28RT-201T airplanes. AD 2018-02-05 required inspecting the fuel tank selector cover to verify the left and right fuel tank selector placards are located at the proper positions and replacing those that are improperly located with new placards.