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Airworthiness Directive

AD 98-12-06 63 FR 30377 Active

Federal Aviation Administration · 14 CFR part 39

Requires replacing the fuel filter if it is contaminated, inserting a revision to the Limitations Section of the flight manual, and inspecting the engine valve shafts for brownish- black sticky residue.

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FR document
98-14614
Amendment
39-10562
Published
1998-06-04
Effective
1998-07-17
Models covered
1

Last live check: 2026-08-19

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AD

98-12-06

FR doc 98-14614 · 63 FR 30377

AD 98-12-06Published 1998-06-04Effective 1998-07-17

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 replacing the fuel filter if it is contaminated, inserting a revision to the Limitations Section of the flight manual, and inspecting the engine valve shafts for brownish- black sticky residue.

Full official abstract

This amendment adopts a new airworthiness directive (AD) that applies to certain Stemme GmbH & Co. KG (Stemme) Models S10 and S10-V sailplanes. This AD requires replacing the fuel filter if it is contaminated, inserting a revision to the Limitations Section of the flight manual, and inspecting the engine valve shafts for brownish- black sticky residue. If a residue is found on the valve shafts, this action will require cleaning the engine. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by this AD are intended to prevent engine valve malfunction, which could cause engine failure during flight and loss of control of the sailplane.

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All Stemme S10/S12 directives

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Applies to 1 model in our index