OVERHAUL MAJOR COMPONENTS
Overhauls Major Components-Included
| Item # | Type | Mod | Benefit |
| 1 | DT&RS | Overhauled hub | Improved lift to 12,500 lb. / 5,669 kg internal; 12,500 lb. / 5,669 kg external GW |
| 2 | DT&RS | Overhauled Main rotor transmission | Increased horsepower to 1,370 HP |
| 3 | DT&RS | Overhauled Swashplate Assembly | Improved lift to 12,500 lb. / 5,669 kg internal; 12,500 lb. / 5,669 kg external GW |
| 4 | DT&RS | Overhauled main and tail rotor drive shaft and coupling | Increased horsepower to 1,370 HP |
| 5 | DT&RS | Overhauled tail rotor | Additional tail rotor authority and efficiency at higher altitudes |
| 6 | DT&RS | Overhauled 90° gearbox | Additional tail rotor authority and efficiency at higher altitudes |
| 7 | DT&RS | Overhauled 42° gearbox | Increased horsepower to 1,370 HP |
| 8 | DT&RS | Overhauled hydraulics system | Improves cyclic control by raising the operating pressure to 1,500 PSI |
| 9 | DT&RS | Twin T53-L-13B engines install | Increased horsepower with increased efficiency at higher altitudes, increased to 4,000 TBO |
| 10 | Airframe | Overhauled oil cooler and blower | Improved cooling for T53-L-13B engine |
| 11 | Airframe | Overhauled airframe | Increased strength for 1,370 HP and 56.5 PSI torque |
| 12 | Airframe | Overhauled lift beam and main beam and pylon | Increased strength for 1,370 HP and 6,000 lb. / 2,268 kg cargo hook capacity |
| 13 | Airframe | Overhauled cross tube tunnel | Increased strength and fatigue capabilities for 12,500 lb. / 5,669 kg internal GW |
| 14 | Tailboom | Overhauled tailboom for additional torque requirements | Increased strength for 1,370 HP and 56.5 PSI torque |
| 15 | Tailboom | 412 vertical fin | Reduced flight loads and better crosswind performance |
| 16 | Tailboom | Boundary Layer Research Inc. tailboom mods | Improves cyclic control |
| 17 | Electrical Avionics | Optional electrical and avionics | Options include electrical rewire, glass cockpit STC and avionics suites |
