Aerospace engineering and operations technicians typically do the following:

• Meet with aerospace engineers to discuss details and implications of test procedures
• Build and maintain test facilities for aircraft systems
• Make and install parts and systems to be tested in test equipment
• Operate and calibrate computer systems so that they comply with test requirements
• Ensure that test procedures are performed smoothly and safely
• Record data from test parts and assemblies
• Install instruments in aircraft and spacecraft
• Monitor and ensure quality in producing systems that go into the aircraft 

New aircraft designs undergo years of testing before they are put into service, because the failure of key parts during flight can be fatal. As part of the job, technicians often calibrate test equipment, such as wind tunnels, and determine the causes of equipment malfunctions. They also may program and run computer simulations that test the new designs.

Some aerospace engineering and operations technicians are beginning to specialize in three-dimensional printing, or additive manufacturing, as this technology becomes more common in the work they do.