EASA AD 2019-0054: Nacelles / Pylons — Engine Mounting Structure — Modification | RegNotify

Airworthiness DirectiveEASA AD 2019-0054

Nacelles / Pylons — Engine Mounting Structure — Modification

Published: Mar 18, 2019
Effective: Apr 1, 2019
Deadline: Apr 1, 2021

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of affected SAAB 2000 aeroplanes must modify the engine mounting structure and attachments following the instructions in SAAB Service Bulletin 2000-54-036. This modification must be completed within 3,000 flight hours or 24 months from the effective date of 1 April 2019, whichever occurs first.

Summary

EASA Airworthiness Directive 2019-0054 is an airworthiness directive issued by EASA affecting SAAB 2000 aeroplanes, excluding serial numbers 006, 043, 056, and 061. It addresses a potential unsafe condition related to the engine mounting structure on these aircraft. The directive mandates a modification to the nacelle upper longeron and associated engine mounting structure to prevent structural failures.

What changed

This new airworthiness directive introduces a required modification to the engine mounting structure and its attachments on SAAB 2000 aeroplanes. The modification involves installing a repair as detailed in SAAB Service Bulletin 2000-54-036 to prevent loose fasteners and potential cracks in the engine mount-to-aircraft structural connection.

Why it matters

This directive is critical for aviation professionals because it prevents the risk of engine mount failure, which could lead to significant airframe vibrations and compromise the integrity of the pylon and nacelle structure. Operators and maintenance organizations must ensure compliance to maintain aircraft safety and airworthiness.

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