Superseded. This AD was superseded by AD 2023-12-26. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2021-24-04
Effective 01/13/2022 · Published 12/09/2021
Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters
Summary
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) Model 505 helicopters. This AD was prompted by the determination that reducing the pressure altitude limitations for certain fuel types is necessary. This AD requires revising the existing Rotorcraft Flight Manual (RFM) for your helicopter. The FA…