A Philippine-registered aircraft with maintenance issues is currently located in Europe and will fly to the US. Which law shall apply to the aircraft for its maintenance requirements?

In the scenario described, the Philippine Civil Aviation Regulations (PCAR) would apply to the aircraft for its maintenance requirements. PCAR governs the operation and maintenance of Philippine-registered aircraft, regardless of their location. This means that even when the aircraft is in Europe and intends to fly to the US, it must comply with the regulations set forth by the Philippine authorities, as it is a Philippine-registered aircraft.

While other regulations like the Federal Aviation Administration (FAA) and the European Union Aviation Safety Agency (EASA) also enforce regulations on aircraft in their respective jurisdictions, they typically apply to aircraft registered in their regions or operating under their jurisdiction when in their airspace. Since the aircraft is registered in the Philippines, PCAR takes precedence for maintenance requirements, ensuring that the aircraft meets the safety and operational standards set by the Philippines.

Local regulations where the aircraft is located might enforce certain safety standards, especially during ground operations or for regulatory compliance, but the primary maintenance requirements will still be dictated by the registration country's regulations, which in this case is the PCAR.