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Il Servizio d'inchiesta svizzero sulla sicurezza (SISI) ha pubblicato lunedì, come riferisce la stampa cantonale, le conclusioni sulle cause che, il 28 novembre 2013, avevano costrettoil volo Swiss LX 2903 Lugano-Zurigo, operato da Darwin con un velivolo di tipo Saab 2000, a un atterraggio di emergenza a Malpensa.
Gli esperti hanno determinato che la probabile causa è da ricondurre all'allentamento delle viti di un connettore, che permise alle vibrazioni di usurare la guaina isolante di due cavi attraverso i quali dovevano passare le informazioni sulla posizione delle eliche.
Il corto circuito che ne è seguito ha fornito letture anomale al controllore del motore, che ha ridotto al minimo la potenza della turbina. Nessun membro dell'equipaggio o passeggero rimase ferito. L’atterraggio a Milano avvenne quindi senza un motore. Il SISI considera l'evento serio ma non ha previsto l’emissione di particolari raccomandazioni di sicurezza.
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Per saperne di più: il rapporto dell'Ufficio d'inchiesta (in tedesco)
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