That is the price of doing business honestly and transparently under such circumstances.
I am sure the less scrupulous in the industry have been ferrying brown envelopes to delay/stop them at all costs.....
Problem is, once the paperwork has been sent home X number of times, nothing remains as an excuse to refuse it, resulting in a satisfactory, albeit expensive, result.
There are also those who might say that a better business practice would be to have all the paperwork in place before bringing in an expensive machine to sit around doing nothing
. Bristow has been doing business in a manner satisfactory to USA regulators but doesn't have aircraft sitting around earning no revenue for more than 6 months.