SofemaOnline (SOL) www.sofemaonline.com takes a deeper look.

The Challenge We Face

For sensitive electronic components, for example, microprocessors, A static event as small as 5 volts, can have a fatal outcome for the device.

The owner of the Type Certificate for the Aircraft, Engine or Supplemental Type Certificate (STC) has an obligation to ensure the continuity of the continuing airworthiness of the product.

The component Original Equipment Manufacturer (OEM) with a Technical Standing Order (TSO) or European Technical Standing Order (ETSO).

The Part manufacturer through Parts Manufacturing Approval (PMA) or European Parts Approval (EPA) also has the obligation to maintain continuing airworthiness oversight.

The service bulletin is the delivery vehicle by which the “owner” of the product maintains the integrity of the continuing airworthiness of the component, however not all suggested actions are mandatory, some may be related to reliability still others related to cosmetic improvements.