Every article on this site is written by AI from official sources and checked by a second AI. How it works
Proposed rule

Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register April 6, 2026. Document 2026-06605. Updated Nov. 13, 2026.

What it does

The FAA proposes to supersede Airworthiness Directive (AD) 2021-11-08, which applies to all Pilatus Aircraft Ltd. (Pilatus) Model PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC- 6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/ C-H2, and PC-6/C1-H2 airplanes. AD 2021-11-08 requires revising the airworthiness limitation section (ALS) of the existing aircraft maintenance manual (AMM) or instructions for continued airworthiness (ICA) to incorporate new airworthiness limitations and adding an additional eddy current inspection of the fuselage wing fittings and wing-to-fuselage fittings if the last inspection was performed using an earlier version of the material. Since the FAA issued AD 2021-11-08, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the ALS of the existing AMM or ICA for these airplanes. 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

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

Since then:

What happens next and when

The FAA must receive comments on this NPRM by May 21, 2026.

The agency's dates, word for word.

Document number2026-06605
ActionNotice of proposed rulemaking (NPRM).
AgenciesTransportation Department; Federal Aviation Administration
PublishedApril 6, 2026
Comments closeMay 21, 2026
Regulation identifier (RIN)2120-AA64
DocketFAA-2026-3474

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