Some will be there and some will be here. We have civilian and military airplanes from way back to the present.

The only airplanes I know of that use spoilers for roll control alone are some military aircraft,

Permitting was the big problem. We were put on the fast track 17 years ago.

We're waiting for one more permit.

With both airlines, initially there will be a couple of airplanes - two or three airplanes - equipped with this system.

Air China has planned to introduce 20 to 30 airplanes within this year, but the exact number will depend on the supply of aircrew members, particularly the pilots.