Fuselage — Main Gearbox Suspension Bar Fittings and Screws — Replacement [Life Limitation]
- Published
- Effective
- Deadline
- Replaces
- 2021-0152
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must determine the damage value and service life limit of each affected part within 50 flight hours after 9 July 2021. If damage values are 1 or higher, or if service life limits are exceeded, the affected parts must be replaced within 100 flight hours after determination. Installation of affected parts is only allowed if they are new parts from 9 July 2021 onward. Compliance with these actions is mandatory unless previously accomplished.
Summary
EASA Airworthiness Directive 2021-0152R1 is a regulatory document addressing the replacement and life limitation of main gearbox suspension bar fittings and screws on Airbus Helicopters SA 330 J models. It applies specifically to parts modified in service per Eurocopter France Service Bulletin No. 01.20, excluding those replaced with new parts during the retrofit mod 07 40043. The directive mandates inspection and potential replacement of affected parts to prevent structural failure and loss of helicopter control.
What changed
This revision adjusts the applicability of the original AD 2021-0152 by excluding helicopters that were produced with mod 07 40043 and concurrently had new main gearbox right-hand rear fittings and screws installed. It clarifies that these helicopters are not affected by the unsafe condition addressed in the original directive. The revision also maintains the requirement to determine damage values and service life limits for affected parts and replace them if necessary.
Why it matters
This AD is critical for aviation professionals because it addresses a potential safety risk involving the main gearbox suspension bar fittings and screws, which could lead to structural failure and loss of helicopter control. Operators and maintenance organizations must ensure compliance to maintain airworthiness and prevent accidents. The directive also provides clear guidance on service life limits and replacement criteria, facilitating effective maintenance planning and regulatory adherence.
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