JT8D (Pratt & Whitney)

The premiere engine for narrow-body jetliners in the past, the JT8D is still in production, though better engines have eclipsed it in its original application. It was the original engine on the 727 in 1964. Pratt also makes kits to bring older JT8D engines into compliance with modern noise and environmental regulations. There have been many models; these are only a sample.

JT8D
Engine statistics
JT8D -7 -17AR -219
Application 727 727, 737, DC-9 MD-80, Super 27
Takeoff thrust 14,000 lb 16,000 lb 21,000 lb
Bypass Ratio 1.07 .96 1.74
Overall pressure ratio 15.4 18.5 19.4
Fan pressure ratio 1.93 2.16 1.91
Fan dia 40.5 in 40.5 54.06
Length 123.5 in 123.5 168.6 in



















F100 : PW4000