AD/PA-31/19 - Flap Track and Rudder Tip Rib Assemblies - Inspection - CANCELLED

What this is: A cancelled aviation safety rule for owners of Piper PA-31 series aircraft (light twin-engine planes).

What it used to do: Required a one-time inspection of the flap track and rudder tip rib assemblies to check for wear or damage, following a manufacturer service bulletin (Piper SL No. 594).

What it does now: Nothing. The directive was officially cancelled on 31 July 2008 because the deadline for compliance was December 1971—meaning any aircraft that needed the fix would have been modified decades ago.

Why it matters: This shows how aviation safety authorities clean up the rulebook by removing outdated requirements that no longer serve a safety purpose, reducing paperwork for aircraft owners.