EASA AD 2019-0120: Electrical Power — Power Transfer Contactors — Replacement | RegNotify

Airworthiness DirectiveEASA AD 2019-0120

Electrical Power — Power Transfer Contactors — Replacement

Published: May 29, 2019
Effective: Jun 12, 2019
Deadline: Jun 12, 2021

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

What to do

Operators must replace any affected power transfer contactors before they exceed 17,000 flight cycles or within 24 months after 12 June 2019, whichever is later, following Fokker Services Service Bulletin SBF100-24-047 instructions. From the effective date, only new, serviceable affected parts may be installed on these aircraft.

Summary

EASA Airworthiness Directive 2019-0120 is an official regulatory document addressing electrical power transfer contactors on Fokker Services B.V. F28 Mark 0100 aeroplanes. It mandates the replacement of specific generator, essential bus, and auxiliary power transfer contactors with new parts to prevent smoke and electrical power loss in the cockpit.

What changed

This new Airworthiness Directive introduces a one-time mandatory replacement of affected generator power transfer contactors (GPTC), essential bus transfer contactors (EBTC), and auxiliary power transfer contactors (APTC) with serviceable parts. It also allows installation of only new, serviceable affected parts from the effective date onward.

Why it matters

This directive is critical for aviation professionals as it addresses a safety risk involving smoke and electrical power loss in the cockpit, which can increase crew workload and endanger flight deck occupants. Compliance ensures continued airworthiness and operational safety of F28 Mark 0100 aircraft equipped with the affected parts.

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