MH-60 SLAP
Abstract
MH-60 SLAP is assessing the primary aircraft structure and subsystem condition of the MH-60S fleet in order to evaluate the airframe's ability to meet its designed service life of 10,000 hours. SLAP will determine the efforts necessary to extend the aircraft design life limits to meet Chief of Naval Operations (CNO) operational inventory requirements through FY 2035. The highest flight time MH-60S helicopters are expected to exceed the design life limit in 2024, at which time as many as 30 aircraft per year could be removed from flight status without a SLAP and follow-on Service Life Extension Program (SLEP). MH-60 SLAP is comprised of two distinct assessments: FLA, which will establish the fatigue life of the aircraft and air vehicle systems and Subsystem Life Assessment (SLA), which will examine subsystems that are critical to safe operations and identify risk mitigation strategies for critical components. FLA consists of structural investigations of the cockpit beams, main gearbox beams/frames, upper deck, engine mount, lower tub, main landing gear, tail landing gear, cargo hook, transition splice and tie-down fittings/structure, tailcone, tail gearbox, intermediate gearbox, stabilator, manufactured joints/splices, and flight controls support structure. SLA will evaluate engines, rotor brake, hydraulic, flight controls, avionics components and infrastructure, etc., to identify over-and-above inspections, overhaul intervals or replacement schedules to fly beyond the current design limit assumption. FY 2023 budget request funds to continue the SLAP analysis and engineering development that needs to occur to extend the useful life of the MH-60S until transition to Future Vertical Lift-Maritime Strike (FVL-MS). Design and development engineering will continue for inspection intervals, component replacement intervals, and other strategies that will result in Engineering Change Proposals (ECP's) for the phased SLEP solution. The ECP development effort to convert the MH-60S Block 1 aircraft to Block 3B aircraft, engineering development efforts will continue, extending the mission profile for these aircraft and ultimately providing the fleet with more flight hours. Preliminary efforts for the MH-60R usage spectrum which would be required for a future Fatique Life Assessment will be conducted.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2023
- Source ID
- 3384_0702207N_7_1319_PB_2023
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