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Boeing 747-100

The first 747-100s were built with six upper deck windows (three per side) to accommodate the areas above the room. Later, as companies began to use the top cover to the seat of pasajeropremium instead of lounge space, Boeing offered a ten window upper deck as an option. Some-100s were fitted with the new configuration. The -100 was equipped with Pratt & Whitney JT9D-3A engines. Noversión load of this model was developed by Boeing. However, 747-100sse have become freighters. A total of 167 747-100s were built.