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 2021 budget request funds the continuation of fatigue analysis and dispositions for safety critical items. The fatigue analysis and dispositions for safety critical items will continue to be further refined throughout SLAP effort, augmented with aircraft, specific system and wiring teardowns, inspections, and tests; data analysis; and development of models and tools, producing results that will inform SLEP activity. Design and development engineering will be performed to develop an Engineering Change Proposal (ECP) for a SLEP solution. Additionally, a plan will be developed to convert the MH-60S Block 1 aircraft to Block 3B aircraft, extending the mission profile for these aircraft and ultimately providing the fleet with more flight hours.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2021
- Source ID
- 3384_0702207N_7_1319_PB_2021
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