Every article on this site is written by AI from official sources and checked by a second AI. How it works
Final ruleTook effect July 24, 2026

Airworthiness Directives; Stemme GmbH Gliders

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 24, 2026. Document 2026-15004. Updated Nov. 8, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for all Stemme GmbH (Stemme) TSA-M Model S6-RT and Stemme S 12 gliders. This AD was prompted by a report of a leaking electrical fuel transfer pump. This AD requires inspecting affected electrical fuel transfer pumps for certain non-conforming parts, and if found, replacing them with approved parts. This AD also prohibits installation of certain non- conforming parts on affected gliders. The FAA is issuing this AD to address the unsafe condition on these products.

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

What changed in the regulation

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

14 CFR 39

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Federal Aviation Administration has published 482 final rules in 2026 so far, compared with 518 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

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

Since then:

What happens next and when

This AD is effective July 24, 2026.

The agency's dates, word for word.

Document number2026-15004
ActionFinal rule; request for comments.
AgenciesTransportation Department; Federal Aviation Administration
PublishedJuly 24, 2026
Effective dateJuly 24, 2026
Comments closeSept. 8, 2026
Regulation identifier (RIN)2120-AA64
DocketFAA-2026-7222

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