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Department of Transportation
Federal Aviation Administration
• 14 CFR Part 39
• [Docket No. FAA-2025-2259; Project Identifier MCAI-2025-00021-T; Amendment 39-23206; AD 2025-24-09]
• RIN 2120-AA64
AGENCY:
Federal Aviation Administration (FAA), DOT.
ACTION:
Final rule.
SUMMARY:
The FAA is adopting a new airworthiness directive (AD) for all ATR—GIE Avions de Transport Régional Model ATR42 and Model ATR72 airplanes. This AD was
( printed page 56989)
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.
DATES:
This AD is effective January 13, 2026.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of January 13, 2026.
ADDRESSES:
AD Docket:
You may examine the AD docket at
regulations.gov
under Docket No. FAA-2025-2259; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
• For European Union Aviation Safety Agency (EASA) material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; emailADs@easa.europa.eu. You may find this material on the EASA website at
ad.easa.europa.eu.
• You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. It is also available atregulations.gov
under Docket No. FAA-2025-2259.
FOR FURTHER INFORMATION CONTACT:
Brenda L. Buitrago, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-288-7368; email:
9-AVS-AIR-BACO-COS@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all ATR—GIE Avions de Transport Régional Model ATR42 and Model ATR72 airplanes. The NPRM was published in the
Federal Register
on August 19, 2025 (90 FR 40266). The NPRM was prompted by AD 2025-0011, dated January 10, 2025 (EASA AD 2025-0011) (also referred to as the MCAI), issued by EASA, which is the Technical Agent for the Member States of the European Union. The MCAI states that following a design review it was determined the interval of the PRSOV function…
Fonte: Federal Register (federalregister.gov). Texto original em inglês.