# Proposed AD FAA-2026-4656: Airbus Helicopters Deutschland GmbH (AHD) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Products: Airbus Helicopters Deutschland EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3 and EC635T2+
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 29, 2026, 91 FR 39043
- Comments due: August 13, 2026
- Docket: FAA-2026-4656 (https://www.regulations.gov/docket/FAA-2026-4656, where comments are filed)
- Project: MCAI-2026-00214-R
- FR document: 2026-13034
- Official PDF: https://openairdocs.org/files/sha256/f9/e3/f9e3f12f98845652451ecaade6235e161a20696149207d894e22e5c81eeccdd0 (from https://www.govinfo.gov/content/pkg/FR-2026-06-29/pdf/2026-13034.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/06/29/2026-13034/airworthiness-directives-airbus-helicopters-deutschland-gmbh-ahd-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-13034-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-4656

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, and EC635T2+ helicopters. This proposed AD was prompted by a report of a separated tail rotor blade (TRB) assembly due to a crack caused by intergranular corrosion. This proposed AD would require repetitively inspecting a certain TRB assembly for cracks and, depending on the results, removing any cracked TRB assembly from service and replacing an affected part as terminating action for the repetitive inspections. This proposed AD would also prohibit installing a certain TRB assembly on any helicopter unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 29, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-13034, comments due Aug 13, 2026 (https://www.federalregister.gov/documents/2026/06/29/2026-13034/airworthiness-directives-airbus-helicopters-deutschland-gmbh-ahd-helicopters)

---
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.