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IPTN N-250
The IPTN N-250 is a regional aircraft commuter turboprop, an original design by the Indonesian firm IPTN (Industri Pesawat Terbang Nusantara) (now Indonesian Aerospace), N letter in front of -250 stands for Nurtanio or Nusantara and 250 denotes a twin-engined aircraft with a capacity of 50 passengers. This aircraft was IPTN's first major effort to win the market share of the regional turboprop class of 50–70 seat airliners. The aircraft was the star exhibit at the 1996 Indonesian Air Show in Cengkareng, but its development was eventually cancelled after the Asian financial crisis of 1998.
==Design and development==
The N-250 development plan was first revealed by PT IPTN (now PT Dirgantara Indonesia,''Indonesian Aerospace'') at the Paris Air Show in 1989, but was first introduced in 1986 when the Indonesian Air Show 1986 was held. The first prototype, serial number PA-1 with a capacity of 50 passengers, flew on 10 August 1995. The Second prototype, a stretched variant with a capacity of 70 passengers named N250-100, was planned to have its first flight on May 1996 , but this was delayed and the plane was instead first flown on 19 December 1996. The third and fourth prototypes were planned to first fly on July 1996 and September 1996 respectively, but construction for both aircraft were halted due to the financial meltdown in Asia the following year.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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