Nouvelle AD sur modèles DG

[Cyril]

Salut,

Si pas encore parvenue à votre connaissance, la PAD (Proposal to issue an Airworthiness Directive) ref.: 24.044 a été publiée sur le site de l'EASA le 15 Avril et s'adresse à TOUS les modèles de DG.
Le PAD est une pré-publication d'une AD afin que les opérateurs puisse revoir et commenter le document avant la publication définitive de l'AD.
Les travaux requis par l'AD seront à faire dans les 3 mois après la date effective de l'AD.

Extrait de l'AD:
An occurrence was reported of a broken rod end at the upper end of the elevator pushrod in the fin of a DG-300 sailplane. It was found that the elevator play adjustment screw was screwed in too far, which caused jamming of the roller inside the funnel. Even with increased force, the roller could not be moved up to the front of the funnel. Therefore, each time, when rigging and during normal operation, a bending force acted on the rod end, which caused fatigue failure of the rod end. Due to similarity of design, all DG sailplanes listed in the applicability of this AD (if equipped with automatic hook-up) might be affected by this potential unsafe condition.
This condition, if not detected and corrected, could lead to loss of pitch control of the (powered) sailplane.
To address this potential unsafe condition, DG Aviation issued the TN, to provide inspection and replacement instructions of affected parts, and issued revision of applicable Maintenance Manuals (AMM).
For the reason described above, this AD requires a one-time operational check of the automatic elevator hook-up, and, depending on findings, replacement of the affected parts, and mandatory replacement of rod end for Group 1 (powered) sailplanes. This AD also requires to follow the revised AMM tasks.

Le lien vers le PAD: https://ad.easa.europa.eu/ad/24-044
Le lien vers les TN associées:https://www.dg-aviation.de/en/maintenance-service-aircraft/technical-notes

Les TN concernées:
Pour DG 300: DG-SS-09 (TM DG-SS-09 FE-29-01-01f TN)
Pour DG 500: 500-17 (TM500-17 FE-29-01-01c TN)
Pour les DG 800: 800-50 (TM800-50 FE-29-01-01c TN)

Cdlt,
Cyril