If a piece of equipment similar to the G5 “Garmin electronic flight instrument ” is requested to be installed, how should the approval process be initiated?
If you are a design organization, please refer to the FAQ table of design change classification (for General Aviation only) to get guidelines in the decision process to classify an avionic design change as minor or major.
Question for the individual counselling event: My US colleagues have a FAA STC validated by EASA. Can I use a minor mod to extend the applicability?
No. The extension of the applicability should be requested through a Maj change to STC application by the FAA STC holder. Other possibility is that the EU DO, having good connection with US DO and availibility to data, could apply directly for an STC.
Part 21 classification: Is the replacement of each Commercial Off-The-Shelf (COTS) equipment currently at least a minor change?
There are two possible cases. The replacement of a COTS having the same Part Number (p/n) is considered a maintenance action. Should the p/n be different, it has to be considered as a change.