GMGuidance material
GM No 2 to 21.A.125A(b) Letter of agreement – Production Inspection System: Functional Tests
All items produced should be subject to inspection to be carried out at suitable phases which permit an effective verification of conformity with the design data. These inspections may provide for the execution of tests to measure performances as set out in the applicable design data. Considerations of complexity of the item and/or its integration in the next level of production will largely determine the nature and time for these tests, for example: appliances - will require full functional testing to the specifications parts - will at least require basic testing to establish conformity, but due allowance may be made for further testing carried out at the next level of production material - will require verification of its stated properties.
GM — Regulation (EU) No 748/2012 · ED Decision 2012/020/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025