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  2. Hush kit - Wikipedia

    en.wikipedia.org/wiki/Hush_kit

    Hush kit for the Pratt and Whitney JT8D-1 through -17 engines Two JT4As installed on a KLM DC-8. A hush kit is an aerodynamic device used to help reduce the noise produced by older aircraft jet engines. These devices are typically installed on older turbojet and low-bypass turbofan engines, as they are much louder than later high-bypass ...

  3. Time between overhauls - Wikipedia

    en.wikipedia.org/wiki/Time_between_overhauls

    Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. [ 1 ] On rotorcraft , many components have recommended or mandatory TBOs, including main rotor blades , tail rotor blades and gearboxes .

  4. Pratt & Whitney JT3D - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney_JT3D

    Pratt & Whitney provided a kit whereby JT3Cs could be converted to the JT3D specification, and performance, during an overhaul. [2] In 1959, important orders for the engine were the Boeing 707-120B and Boeing 720B when American Airlines ordered one 707 powered by JT3D turbofans and KLM ordered a JT3D-powered Douglas DC-8.

  5. DeltaHawk DH180 - Wikipedia

    en.wikipedia.org/wiki/DeltaHawk_DH180

    A retrofit kit is planned for the SR20. [3] The engine received its type certificate from the Federal Aviation Administration on April 7, 2023, with first customer deliveries planned for 2024. [1] [2] [4] The US National Aeronautics and Space Administration selected the engine for their Subsonic Single Aft Engine Aircraft scale flight test ...

  6. Aircraft maintenance - Wikipedia

    en.wikipedia.org/wiki/Aircraft_maintenance

    The core value is the value of its data plate and non-life-limited-parts. [29] Engine makers deeply discount their sales, up to 90%, to win the multi-year stream of spares and services, resembling the razor and blades model. [30] Engines installed on a new aircraft are discounted by at least 40% while spare engine

  7. Ural Works of Civil Aviation - Wikipedia

    en.wikipedia.org/wiki/Ural_Works_of_Civil_Aviation

    In 1956, after the reorganization and technical equipment of the workshops, the company mastered the repair of ASh-82T piston engines for IL-14 aircraft. [1] In the 1960s, along with the development of helicopter aviation, a need arose for a major overhaul of the ASh-82V engines and the R-5 main gearbox of the Mi-4 helicopters. Until 1987, this ...

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