Pay
You are almost right.
Brookfield never 'forget' to pay. It just seems that apparently Ryanair dont ever pay them whenever the 12th of the month falls on a friday, sat, or sun. Obviously this means that someone is gaining a few extra days of interest on a few hundred thousand Euro that should have been divided up into pilot bank accounts.
The funds should arrive in your account on 12th of every month. If that falls on a weekend, BRK have a duty to make that money available in your account before or on the contracted pay date. Your financial dealings are not with FR, it is BRK. For that reason, BRK are the ones liable for paying you the owed amount. If you contact FR in relation to this, they will tell you that it is nothing to do with them, and contact BRK.
There are not two ways about it. If you are contracting your services to BRK as a Ltd company and operating in that manner, you have certain rights, as well as responsibilites. Your company has the right to remove those pilot services from BRK until payment is retrieved in full. You also have the right to sell debt onto a debt collection agency. (I wonder how that would go down with BRK when a debt collector turns up at the door of the office). However, attempting to follow through on these rights will more then likely end up in the fact that your company service's are no longer required.
Unfortunately, unlike if you are actaully employed, BRK can terminate your contract and then hire someone immidiately to fill your position, and there is nothing really you can do about it. If you were fully employed, this would obviously not be allowed, and there would be all sorts of leagal issues. (This all starts getting into employment law).
You are not alone. You can join either IALPA, BALPA, or IPA, (Independant Pilots Association). All of these organisations can offer help and advice, but as they are not recognised by FR, they can not fight your corner within the company negotiations area. Having said this, even if they were recognised by FR, you don't work for FR, so your terms and conditions would not be altered.