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Mean aerodynamic chord (MAC) is defined as: [6] = (), where y is the coordinate along the wing span and c is the chord at the coordinate y.Other terms are as for SMC. The MAC is a two-dimensional representation of the whole wing. The pressure distribution over the entire wing can be reduced to a single lift force
Location of Bawean. The incident began at 11:38 UTC+7:00 on 3 July 2003 when military-civilian radar at Ngurah Rai International Airport in Denpasar, Bali detected suspicious movement of several aircraft northwest of Bawean Island, with the altitude observed to be between 15,000 ft (4,600 m) to 35,000 ft (11,000 m) and speed of 450 kn (830 km/h).
The AW139 has a five-blade main rotor and retractable undercarriage. In 2011, a military-configured variant, the AW139M, was revealed by AgustaWestland. It was promoted at the US market, including for the U.S. Air Force's Common Vertical Lift Support Program.