EASA SIB CE-08-14
Diamond Models DA 40 and DA 40F airplanes equipped with Garmin G1000 installations per Garmin Supplemental Type Certificate (STC) SA01254WI and STC SA01389WI - Possible Failure of a Transient Voltage Suppressor (TVS)
Summary
Special Airworthiness Information Bulletin SAIB: CE-08-14 is an FAA informational bulletin addressing a potential airworthiness concern for Diamond Models DA 40 and DA 40F airplanes equipped with Garmin G1000 installations under Garmin Supplemental Type Certificates SA01254WI and SA01389WI. The bulletin highlights possible failure of transient voltage suppressors (TVS) that may cause cockpit smoke, loud popping sounds, and loss of standby attitude indicator and audio panel functionality. This bulletin does not mandate corrective action but provides important safety information for operators of these aircraft.
What Changed
This bulletin introduces awareness of the potential failure of transient voltage suppressors installed per Garmin STCs SA01254WI and SA01389WI on Diamond DA 40 and DA 40F airplanes. It recommends inspection and possible replacement of affected TVS units based on date codes specified in Garmin Service Bulletin No. 0738, revision B. The bulletin does not issue an airworthiness directive but advises operators to take preventive measures.
Why It Matters
The potential failure of the TVS can increase pilot workload due to loss of critical avionics such as the standby attitude indicator and audio panel, which are essential for safe flight operations. Understanding and addressing this issue helps operators maintain aircraft reliability and safety. Maintenance and compliance teams benefit from early identification and replacement of faulty components to prevent in-flight electrical anomalies.
What To Do
Operators of Diamond DA 40 and DA 40F airplanes with Garmin G1000 installations should inspect the date codes of installed transient voltage suppressors as outlined in Garmin Service Bulletin No. 0738, revision B. If the TVS units fall within the specified date codes, they should be removed and replaced promptly. The inspection and any necessary replacements should be completed within 60 days or 10 flight hours, whichever occurs first, and records of the inspection should be sent to Diamond Aircraft Industries.
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