The Rolls-Royce Tay reference article from the English Wikipedia on 24-Apr-2004
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Rolls-Royce Tay

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Rolls-Royce has established a leading position in the corporate and regional airline sector through the development of the Tay twin shaft turbofan. More than 16,000 engines are in service with over 12 million flight hours. The Tay was built under license by Pratt & Whitney as the J48 and by Hispano-Suiza as the Verdon.

The Tay powered GIV fleet has a dispatch reliability rate of over 99%. The engine is offered in the thrust ranges of 13,850 lbf (61.6 kN) to 15,400 lbf (68.5 kN).

Table of contents
1 Tay 611
2 Tay 620
3 Tay 650
4 Tay 651

Tay 611

Thrust: 13,850 lbf (62 kN)
Aircraft: Tay 611 entered service in
1987 on the Gulfstream IV/IV-SP, for which it is the exclusive powerplant.

Tay 620

Thrust: 13,850 lbf (62 kN)
Aircraft: Fokker F70 from
1988 , Fokker F100 from 1994

Tay 650

Thrust: 15,100 lbf (67 kN)
Aircraft: Originally designed to re-engine the
BAC One-Eleven, the 650 entered service on the Fokker 100 in 1989 .

Tay 651

Thrust: 14,400 lbf (64 kN)
Aircraft:
Boeing 727-100 from 1992 and Douglas DC-9.

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