Superseded. This AD was superseded by AD 2022-20-07. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2021-10-10
Effective 06/24/2021 · Published 05/20/2021
Airworthiness Directives; Airbus Helicopters
Summary
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model SA330J helicopters. This AD was prompted by the failure of a second stage planet gear installed in the main gearbox (MGB). This AD requires repetitively inspecting the MGB particle detector and the MGB bottom housing (oil sump) for metal particles, analyzing any metal particles that are found, and replacement of the MGB if necess…