I, too, don't think a "Non" of the French and a "Nee" of the Dutch will have much effect (if any at all) on Airbus.
I look at it as an employer-employee-union situation. In this case, the European Parliament is the employer, the different EU-members are the union(s) and the people of Europe are the employees. The EU-members have been negotiating with the EU about the European law and came to a principal agreement. Now, just like a union consulting it's members, some European countries consult their citizens.
Should the French and/or the Dutch majority vote "No", the EU-members will have to re-negotiate the current agreement.
Not that they want to: you don't want to know in what kind of way Dutch government is campaigning to convince the Dutch that the only good vote is a "Yes"-vote (85% of MP
's will vote "Yes"). The current administration is spending around Eur. 3 million of tax payer's money on a "Yes" campaign.
Some of the arguments:
"The lights will be switched off in the Netherlands" (meaning that it's all "over"; that doom and poverty will be our destiny).
"World War III could be on it's way" (Btw.: this is not the worst argument I've heard because, basically, I think it does make sense).
"They'll laugh at us and we will lose all credibility"
"We'll lose our influence in Europe"
"The subject is too complex for most people and those who say No haven't understood what the new law is about".
How I personally think about this?
Basically, I'm supporting the unification-process of Europe because I do think it will reduce (not eliminate) the risk of Europe once again becoming the victim of people like Adolf Hitler.
I also support the single currency because if a true unification is what we want, a single currency is a must and it's good for the economy of the EU as a whole. The problem in the Netherlands is that the Euro has been highly abused to strongly increase prices (which is why most of the Dutch don't really like the Euro).
I don't believe in what is argued in this Dutch fear-campaign and think the current agreement will just be re-negotiated should the French and the Dutch say "No".
Surely, Airbus will be fine.