Despite obviously good intentions, the IAF could do with some humility. I wouldn't mind handing you a Zep, but your somewhat haughty behaviour. You cite RP? Fine... let's play RP.
All hardware produced in Tau 44 is of MILITARY purpose and the primary recepient of this hardware is the Colonial Fleet. Already every single Nyx is dspatched straight to the frontline and Singapore shipyards which is NOT a commercial facility is already too busy maintaining the fleet's heavier vessels. If you absolutely need a Zephyr for... whatever purposes, ask a commercial contractor somewhere else. If nobody has the right tools and assembly lines to construct Zephyrs... not my problem really.
Either way, according to local regulations, Singapore is a military facility. Unauthorized docking or even approaching it will result in the local security units taking up measures against the trepasser. Regardless of whom it may be.