If you are staying corporate AND aspire to be a Chief Pilot or Aviation Director, I'd recommend getting the MBA. In the future, you will be dealing with the CEO, CFO or other upper level types, justifying the plane(s), your department's expenses or why some money is needed for something, training, equipment, whatever, having the MBA means you can speak their language; you will be able to present your ideas intelligently and in terms they will understand. I have a good friend who is an aviation director at a Fortune 100 deal and recommends it highly. He's a real pilot, but knows whereof he speaks. He managed yo turn the plane into a profit center and ensured its place in the budget.
GF