This kit provides an approved main landing gear door torque tube mod. This is a design improvement for models 680W, 680T, 680V, 681, 690, 690A/B/C/D, 695, 695A/B.
To provide rudder pedal installation for all serial numbers for Models 680, 680FP, 681, 680T, 685, 690, 690A, 690B, 690C, 695
Provides an approved, alternative Environmental Control System. Note The -553 kit allows for upgrading an existing ENVIRO installation to the new Temperature & Flow control modules & Flow sensor. For all serial numbers for Models 690C, 690D, 695, 695A, 695B, & also for all serial numbers that have not previously complied with earlier modification to Gulfstream Dwg 880718 (Environmental system installation). For conversion from Sundstrand to Enviro, bleed air only.
Modification designed to repair and replace damage to surrounding skin and attachment structure of the tail tie-down bumper. The modification also improves the attachment of the bumper support to F.S. (429.477 long fuselage) or (355.477 short fuselage) frames. Models 500, 500A, 500B, 500S, 500U, 560, 560A, 560E, 560F, 680, 680E, 680F, 680FL, 680FL(P), 680F(P), 680T, 680V, 680W, 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695A, 695B.