ABOUT DATA SOURCES


SIC code 30300 relates specifically to the Manufacture of air and spacecraft and related machinery and is the most appropriate data for the topic of this report. However, in a small number of cases the official government data at this level of the economy is not available. In these instances, data from a broader industrial category which covers manufacturers of transport equipment have been used and are identified as such in the text.


TECHNICAL INFORMATION AND TERMINOLOGY


For the purposes of this document, the aerospace sector comprises two distinct economic activities


• aerospace manufacture is the manufacture of air and spacecraft related machinery (SIC 3030).5


• MRO is the Maintenance, Repair and Overhaul of aircraft and associated systems and components throughout the life of an aircraft from its initial entry into service through to its ultimate disposal (SIC 3016).


Data sources The vast majority of the data used in this document are sourced from the Office for National Statistics. Employment data for the aerospace sector as a whole on page 12 are derived from figures published by ADS, which are slightly higher than those provided by the ONS.


Gross Value Added (GVA)


Throughout the document references are made to Gross Value Added or GVA. GVA is the additional income generated by business activities and is widely used to illustrate the economic significance of a sector in the economy.


5 Standard Industrial Classification classifies business by the type of economic activity in which they engage. 34


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