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AD 2025-04389

Published 2025-03-18 · 1 model · 3 US-registered tails affected · Federal Register

Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes Federal Register ↗

Abstract

The FAA is adopting a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and ATR72 airplanes. This AD was prompted by a report of a manufacturing defect identified in the lavatory fire extinguisher. This defect could potentially result in leakage at the eutectic tip, leading to a loss of pressure in the cylinder, making fire extinguishing capabilities ineffective. This AD requires an inspection (i.e., weight check) and replacement, as applicable, of certain lavatory compartment fire extinguishers, and also prohibits the installation of affected parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference (IBR). The FAA is issuing this AD to address the unsafe condition on these products.

Applicability · by US fleet size

Federal Register text

Verbatim; the Federal Register publication is the legally binding document. Cite: 90 FR 12455. View on Federal Register ↗

[Federal Register Volume 90, Number 51 (Tuesday, March 18, 2025)] [Rules and Regulations] [Pages 12455-12457] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-04389]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-2330; Project Identifier MCAI-2024-00393-T; Amendment 39-22983; AD 2025-05-11] RIN 2120-AA64

Airworthiness Directives; ATR--GIE Avions de Transport R[eacute]gional Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and ATR72 airplanes. This AD was prompted by a report of a manufacturing defect identified in the lavatory fire extinguisher. This defect could potentially result in leakage at the eutectic tip, leading to a loss of pressure in the cylinder, making fire extinguishing capabilities ineffective. This AD requires an inspection (i.e., weight check) and replacement, as applicable, of certain lavatory compartment fire extinguishers, and also prohibits the installation of affected parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference (IBR). The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective April 22, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of April 22, 2025.