Q70. Would fuels combusted in a test stand be considered as stationary fuel combustion when the articles being tested are mobile sources (aircraft, rocket, missile, spacecraft)?

A70. With respect to test stands, your facility may not be required to report emissions from these operations if they meet the definition of research and development exempted under 98.2(5).  If the test stan

ds do not meet this definition, the emissions must be reported, if your facility meets the applicability criteria listed in 40 CFR 98.2(a)(3).