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THERE are various approaches to the problem of the evolution of a line of production aircraft from the basic prototype machine and the merits and demerits of each will depend to some extent on the kind of aircraft, the local conditions and the magnitude of the production order.

IT is an accepted principle that primary controls should have full consideration during the initial design of an aircraft but there is a general tendency to ignore secondary controls and systems, such as electrics and hydraulics, until all other requirements have been satisfied, basic shapes and sizes determined and structural members laid out.

A brief comparison of tooling techniques in the automotive and aircraft industries. One problem arising where the same tooling shop is used lies in the difference between the types of engineering drawings. The aircraft drawings are complicated by the fact that engineering changes are not included in the up‐to‐date working drawings.

This paper analyses J1 League and J2 League clubs during the period 2011–2020 to anticipate financial distress.

Data were collected for 29 professional football clubs competing in the J1 and J2 League for the financial years ending 2011–2020. Analysis was conducted using Altman’s Z-score methodology and additional statistical tests were conducted to measure differences between groups.

The results show significant cases of financial distress amongst clubs in both divisions and that clubs that have played predominantly in the J1 League are in significantly poorer financial health than clubs that have played predominantly in the J2 League. Overall, the financial situation in Japanese professional football needs to be monitored, a position that could be exacerbated by the economic crisis, caused by the coronavirus disease 2019 (COVID-19).

While the financial situation for a majority of the clubs in the J-League presents an austere picture, comparison with clubs in other leagues across Asia and Europe and understanding the different policies set by these leagues would enable us to understand whether the phenomenon of financial distress is common to other clubs and leagues across different countries and continents.

The paper recommends that J-League visit the existing club licensing criteria and implement equitable cost-control measures, such as implementing a cap on acceptable losses over a specified period or restricting overall expenditures as a percentage of the club’s revenue.

The paper extends the evidence base of measuring financial distress in professional team sports and is also the first paper of its kind to examine this in relation to Asian professional football.