Airworthiness Directives; Various Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register March 13, 2026. Document 2026-04966. Updated Nov. 13, 2026.

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters. This proposed AD was prompted by a report of a loss of tail rotor authority due to auxiliary system fluid loss caused by a yaw pedal damper housing fatigue fracture and attachment bolt fatigue fracture. This proposed AD would require performing repetitive visual inspections of the auxiliary servo assembly, a fluorescent penetrant inspection (FPI) of the yaw pedal damper housing and, if necessary, corrective actions. This proposed AD would also require determining and recording the remaining life of a certain part and revising the existing rotorcraft flight manual (RFM) to provide the flight crew with procedures to follow under certain conditions. This proposed AD would also require revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICAs) and the existing approved maintenance or inspection program, as applicable by incorporating a new service life limit for a certain part. This proposed AD would also require re-identifying the serial number of a certain part. The FAA is proposing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What it would change

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Before this

692 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

March 13, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; The Boeing Company Airplanes
March 13, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
March 13, 2026 Final rule. Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
March 13, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
March 12, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
March 12, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
March 12, 2026 Final rule; request for comments. Airworthiness Directives; Airbus SAS Airplanes
March 12, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes

Since then:

What happens next and when

The FAA must receive comments on this proposed AD by April 27, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-04966
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	March 13, 2026
Comments close	April 27, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-2297

Source: the Federal Register (public domain). The document in the Federal Register