# Proposed AD FAA-2025-2259: ATR-GIE Avions de Transport Régional Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-24-09
- Products: ATR – GIE Avions de Transport Régional
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 19, 2025, 90 FR 40266
- Comments due: October 3, 2025
- Became: [AD 2025-24-09](https://openairdocs.org/ad/2025-24-09)
- Docket: FAA-2025-2259 (https://www.regulations.gov/docket/FAA-2025-2259, where comments are filed)
- Project: MCAI-2025-00021-T
- FR document: 2025-15773
- Official PDF: https://openairdocs.org/files/sha256/03/45/0345e604fe2ac21cdbdbd5105ca19a3c2c7f9536b6482390acef85a56a9d7804 (from https://www.govinfo.gov/content/pkg/FR-2025-08-19/pdf/2025-15773.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/08/19/2025-15773/airworthiness-directives-atr-gie-avions-de-transport-rgional-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-15773-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-2259

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and Model ATR72 airplanes. This proposed 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 proposed AD would require repetitive functional tests of each PRSOV, and applicable corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 19, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-15773, comments due Oct 3, 2025 (https://www.federalregister.gov/documents/2025/08/19/2025-15773/airworthiness-directives-atr-gie-avions-de-transport-rgional-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.