Vtol for flaps act 1 and 2 for engine's.

The Lockheed C-69 Constellation was a four-engined, propeller-driven transport pressed into military service during World War Two. It was the first military version of the Lockheed Constellation aircraft line. It first flew in 1943, and production of the 22 constructed was shared between the United States Army Air Forces (15) and commercial carriers. Most of the C-69 aircraft built were later converted into civilian airliners under the new designation L-049.