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Airworthiness Directive

AD 2026-15-04 91 FR 46709 Active

Federal Aviation Administration · 14 CFR part 39

Requires inspecting affected electrical fuel transfer pumps for certain non-conforming parts, and if found, replacing them with approved parts.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2026-15004
Amendment
39-23416
Published
2026-07-24
Effective
2026-07-24
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2026-15-04 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

2026-15-04

FR doc 2026-15004 · 91 FR 46709

AD 2026-15-04Published 2026-07-24Effective 2026-07-24

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires inspecting affected electrical fuel transfer pumps for certain non-conforming parts, and if found, replacing them with approved parts.

Full official abstract

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.

More directives for Stemme S10/S12

  1. AD 2026-15-08 Airworthiness Directives; Stemme GmbH Gliders Effective 2026-09-03
  2. AD 2023-02-03 Airworthiness Directives; Stemme AG Gliders Effective 2023-03-01
  3. AD 2022-14-11 Airworthiness Directives; Stemme AG (Type Certificate Previously Held by... Effective 2022-07-26
  4. AD 2022-03-07 Airworthiness Directives; Stemme AG Gliders Effective 2022-03-02
  5. AD 2021-26-12 Airworthiness Directives; Stemme AG Gliders Effective 2022-02-24

All Stemme S10/S12 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index