Proposed rule · 2026-23212

Airworthiness Directives; Airbus Helicopters

The FAA proposes to supersede Airworthiness Directive (AD) 2025-24-01, which applies to all Airbus Helicopters Model EC 155 B and EC 155 B1 helicopters. AD 2025-24-01 requires replacement of the jettisonable windows and seals on the sliding doors and fixed panels on the left-hand (LH) and right-hand (RH) sides and the installation of new labels. Since the FAA issued AD 2025-24-01, the manufacturer determined the applicable service information was missing procedures for the tinted windows. This proposed AD would require the same actions as AD 2025-24-01 and would additionally require new actions to include helicopters with the modification of tinted windows. The FAA is proposing this AD to address the unsafe condition on these products.