---
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id: government-20260730-d52299
content_kind: government-document
url: https://www.federalregister.gov/documents/2026/07/30/2026-15466/airworthiness-directives-stemme-gmbh-gliders
url_hash: d5229911b7f0c60b7d5c9d9894c185f6b34b987f204b84fbf88493e57521150b
canonical_url: https://www.federalregister.gov/documents/2026/07/30/2026-15466/airworthiness-directives-stemme-gmbh-gliders
source: us-federal-register
category: government/us
category_raw: Rule
country: us
region: us
tags:
- Air transportation
- Aircraft
- Aviation safety
- Incorporation by reference
- Safety
lang: en
published_at: '2026-07-30T00:00:00Z'
fetched_at: '2026-07-30T09:01:32.756771Z'
updated_at: '2026-07-30T09:07:42Z'
status: published
content_hash: 89e18666c55d9c61e3c622e7aac58b2e80b8de40e1dc5aa2ba227922009f0272
content_changed_at: null
license_note: full
license_basis: public-domain-17usc105
body_available: false
attribution: 'Source: Office of the Federal Register, National Archives and Records
  Administration'
license_rule: source:us-federal-register
summary: The FAA is adopting a new airworthiness directive (AD) for all Stemme GmbH
  (Stemme) Model Stemme S 12 gliders. This AD was prompted by reports of fuel leaking
  around certain copper sealing rings within the fuel system. This AD requires repetitive
  visual checks of the fuel system for fuel leakage, and replacement of the affected
  copper sealing ring. This AD also prohibits the installation of affected parts.
  The FAA is issuing this AD to address the unsafe condition on these products.
summary_source: official
summary_en: The FAA is adopting a new airworthiness directive (AD) for all Stemme
  GmbH (Stemme) Model Stemme S 12 gliders. This AD was prompted by reports of fuel
  leaking around certain copper sealing rings within the fuel system. This AD requires
  repetitive visual checks of the fuel system for fuel leakage, and replacement of
  the affected copper sealing ring. This AD also prohibits the installation of affected
  parts. The FAA is issuing this AD to address the unsafe condition on these products.
provenance:
  doc_id: 2026-15466
  doc_id_scheme: fr_docnum
  issuer:
  - Transportation Department
  - Federal Aviation Administration
  doc_type: Rule
  subtype: null
  action: Final rule.
  significant: false
entities:
- name: AI Safety Act
  type: event
- name: Cognitive Bias, AI Scaling Rule
  type: UNKNOWN
key_facts: []
related: []
related_auto:
- name: 米議会
  type: organization
  weight: 1.0
- name: AI産業
  type: concept
  weight: 1.0
- name: Research Area
  type: UNKNOWN
  weight: 1.0
title: Airworthiness Directives; Stemme GmbH Gliders
---

# Airworthiness Directives; Stemme GmbH Gliders

## TL;DR
The FAA is adopting a new airworthiness directive (AD) for all Stemme GmbH (Stemme) Model Stemme S 12 gliders. This AD was prompted by reports of fuel leaking around certain copper sealing rings within the fuel system. This AD requires repetitive visual checks of the fuel system for fuel leakage, and replacement of the affected copper sealing ring. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.

## Key Points
- Air transportation / Aircraft / Aviation safety / Incorporation by reference / Safety

## Details
(本文なし。リンク先参照)

## Source
元記事: [Airworthiness Directives; Stemme GmbH Gliders](https://www.federalregister.gov/documents/2026/07/30/2026-15466/airworthiness-directives-stemme-gmbh-gliders) — published 2026-07-30T00:00:00Z