Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
airworthiness · Rule · Final rule. · Published 2025-11-18 · Effective 2025-12-23 · 90 FR 51504
Document
Document number
2025-20135
Federal Register citation
90 FR 51504
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2025-11-18
Effective date
2025-12-23
FAA docket
Docket No. FAA-2025-1106
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-2 and MBB-BK 117 D-3 helicopters. This AD was prompted by reports of airspeed and altitude indication errors. This AD requires revising the existing rotorcraft flight manual supplement (RFMS) for the helicopter, replacing the air conditioning system (ACS) condenser outlet grids with ACS condenser outlet covers, and prohibiting the installation of ACS condenser outlet grids. The FAA is issuing this AD to address the unsafe condition on these products.