Navigation — Airspeed Indicator — Inspection / Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Stemme S 12 powered sailplanes must inspect the ASI markings within 30 days of 26 April 2019, following the Stemme AG Service Bulletin P062-980027. If discrepancies are found, they must insert the temporary AFM page before the next flight and replace the affected ASI within three months or at the next scheduled maintenance, whichever is sooner. Installation of only serviceable ASIs is permitted from the effective date onward.
Summary
EASA Airworthiness Directive 2019-0082 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Stemme AG S 12 powered sailplanes with serial numbers 12-002 to 12-021. It addresses an issue with airspeed indicators (ASI) having Stemme Part Numbers IF-W230 or IF-W190, which may have incorrect speed markings. The directive mandates inspection, possible AFM amendment, and replacement of affected ASIs to ensure flight safety.
What changed
This new airworthiness directive introduces a one-time inspection requirement for the airspeed indicators installed on certain Stemme S 12 powered sailplanes. If discrepancies in the ASI markings are found, operators must insert a temporary AFM page and replace the affected ASI within specified timeframes. It also prohibits installation of non-serviceable ASIs from the effective date.
Why it matters
This directive is critical for aviation professionals because incorrect airspeed indicator markings can provide pilots with erroneous speed information, especially at lower speed limits, potentially leading to reduced control of the powered sailplane. Compliance ensures continued airworthiness and flight safety, preventing incidents caused by instrument misreading. Maintenance and compliance teams must act promptly to avoid regulatory violations and operational risks.
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