I thought Paro was severe VFR only. The difficulty in qualifying for Paro isn't the pilot, it's the aircraft and its single engine climb capabilities in that deep valley ringed with mountains. Boeing commissioned some study for DrukAir when they were considering purchasing 737s that went into detail about the…

Uh, they *do* own the beach, down to the mean high-tide line. In some locations that can be almost 50 feet from their deck. At high tide, the public portion of the beach is under water.

This crisis was caused by those idiots in Congress. Screaming about low-time right seat pilots? We need full ATPs for our puddle-jumpers!

Rolls Royce did use the Citroen hydraulic system, complete with LHM fluid in the Silver Shadow/T2 series cars. That included braking and self-leveling, along with the famous nitrogen accumulators. Later cars used the hydropneumatic damping components as well, again, with the little green accumulator bombs.