وصف: Ball, Spherical
Pratt & Whitney (JT9D-3A, -7, -7A, -7F, -7H, -7J, -7AH, series, JT9D-7R4D, -7R4D1, -7R4E, -7R4E1, -7R4E4, -7R4G2 & -7R4H1 series, PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4160, PW4460, PW4462 & PW4650 series, PW4164, PW4164-1D, PW4164C, PW4164C-1D, PW4164C/B, PW4164C/B-1D, PW4168, PW4168A, PW4168A-1D, PW4168-1D, PW4170 series, PW4074, PW4074D, PW4077, PW4077D, PW4084, PW4084D, PW4090, PW4090-3, PW4090D, PW4098, series)