# Proposed AD FAA-2026-3878: ATR-GIE Avions de Transport Régional Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-16-07
- Products: ATR – GIE Avions de Transport Régional
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 4, 2026, 91 FR 23919
- Comments due: June 18, 2026
- Became: [AD 2026-16-07](https://openairdocs.org/ad/2026-16-07)
- Docket: FAA-2026-3878 (https://www.regulations.gov/docket/FAA-2026-3878, where comments are filed)
- Project: MCAI-2025-00913-T
- FR document: 2026-08593
- Official PDF: https://openairdocs.org/files/sha256/6c/19/6c19c04aeda6b242ef232d2e52141da4f6e9367d6c7dbd48af4a26d1b9ac854f (from https://www.govinfo.gov/content/pkg/FR-2026-05-04/pdf/2026-08593.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/05/04/2026-08593/airworthiness-directives-atr-gie-avions-de-transport-rgional-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-08593-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-3878

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2023-21-10, which applies to certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes. AD 2023-21-10 requires an inspection of the horizontal stabilizer (HS) left- and right-hand leading edge lateral ribs, the box in between, the center box upper panel, and HS forward back-up fitting for discrepancies and applicable corrective action. Since the FAA issued AD 2023-21-10, it was determined that additional airplanes are affected and additional areas must be inspected. This proposed AD would continue to require the actions in AD 2023-21-10 and would require expanding the applicability and inspecting the HS front spar web and center box internal area for discrepancies and accomplishing applicable corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 4, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-08593, comments due Jun 18, 2026 (https://www.federalregister.gov/documents/2026/05/04/2026-08593/airworthiness-directives-atr-gie-avions-de-transport-rgional-airplanes)

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