AD 2021-22-16

Effective 01/03/2022 · Published 11/26/2021

Airworthiness Directives; Airbus Helicopters

Airbus Helicopters Eurocopter Eurocopter France Eurocopter Deutschland Helibras Helibras Helicopteros do Brasil

Summary

The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by the failure of a main gearbox (MGB) second stage planet gear. This AD requires replacing the MGB, or as an alternative, replacing the epicyclic reduction gear module for certain serial numbered planet gear assemblies installed on the MGB. This AD also requires inspecting the MG…

Read the full AD on the Federal Register See what applies to your aircraft — Logbook