Superseded. This AD was superseded by AD 2025-22-03. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2025-06-51
Effective 04/25/2025 · Published 04/10/2025
Airworthiness Directives; Bell Textron Canada Limited Helicopters
Summary
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (Bell) Model 505 helicopters. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. This AD was prompted by deformation and/or improper pin engagement in the knuckles of the door hinge on the aft movable ballast box assembly. This AD requires removing all ballast we…