I was doing some reading on aviation regulations and I wanted to understand from an expert whether the following situation is allowable or not. I have reviewed EASA continuing-airworthiness guidelines but am still unclear as this is a bit of a unique scenario.
Appreciate if you can shed some light on whether this situation is permissible or not.
- A component fails and is removed from Aircraft A and declared unserviceable (with an "unserviceable" tag).
- A similar component is removed, via robbery/cannibalisation, from another aircraft (Aircraft B) undergoing maintenance activity (A or C check), and provided to Aircraft C, which has a similar failure.
- There is now a "hole" in Aircraft B, since the component has been robbed/cannibalised to support Aircraft C for the latter's maintenance requirement.
- The original failed component (from Aircraft A) which was declared unserviceable (with an "unserviceable" tag) will be used to support the maintenance check inspections/tests for Aircraft B.
- These tests are to inspect/test aircraft systems, and the "hole" needs to be plugged to carry those out.
- The unserviceable component will eventually be removed from Aircraft B as unserviceable (with the "unserviceable" tag).