importantRule

AD FAA-2025-2259

Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

Summary

The FAA is adopting a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and Model ATR72 airplanes. This AD was prompted by a design review that determined that the inspection interval of the pressure regulator and shut-off valve (PRSOV) functional test must be reduced to meet the design safety objectives, due to a risk of dormant failures. This AD requires repetitive functional tests of each PRSOV, and applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.

Directive Details

AD Number

FAA-2025-2259

Document Number

2025-22339

Type

Rule

Publication Date

December 9, 2025

Effective Date

January 13, 2026

Affected Manufacturer

ATR-GIE Avions de Transport Régional

Criticality

important

Emergency

Docket ID

Docket No. FAA-2025-2259

Topics

Air transportationAircraftAviation safetyIncorporation by referenceSafety

Official Documents

View PDF View on Federal Register

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