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Maintenance Overhaul Shops (off-Aircraft)

Maintenance Overhaul Shops (off-Aircraft)

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Maintenance Overhaul Shops (off-Aircraft)

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  1. Maintenance Overhaul Shops(off-Aircraft) Embry-Riddle Aeronautical University Chapter 15

  2. Maintenance Overhaul Shops • Introduction • Types of Shops • Engine Shops • Avionics Shops • Mechanical Shops • Outsourcing of shop maintenance work • Operation of Overhaul Shops • Shop Data Collection • Summary

  3. Introduction • Responsible for the overall management & administration of maintenance for those components & equipment that are removed from the aircraft for maintenance. • Usually removed and replaced with item from supply • Item is removed, documented with discrepancy, and forwarded to appropriate maintenance shop (in-house or outsourced) • After repair is placed back in supply stores • Rarely may down aircraft until repaired & returned

  4. Support Shops Normally associated with Hangar Maintenance Welding, sheet metal, composites, aircraft interiors, seats etc… Overhaul Shops Involves specialized equipment of the aircraft Equipment is removed during line or hangar maintenance Engine shops, Avionics, Mechanical Shops, outsourcing maintenance work Types of Shops

  5. Largest in the sense of space Bench work, administrative, & Engine Build Up (EBU) EBU (Engine BuildUp) Ability to drop, repair & replace – reduces out of service time – TIME = $$$ Specific components needs for engine location (right, left, or center) Requires specialized GSE and tools – engine stand, hoists, tow tractors etc.. Hush house – engine run-up area Engine Shops

  6. Avionics • Includes electrical & electronic systems • Wiring, generators, power distribution, flight control computers • May have separate battery shop • Communication/Navigation/radar/instruments • Glass cockpit systems – HUD (Heads Up Display), LCD panels, CRT instruments • Fiber optics • Computer systems

  7. Mechanical Shops • Includes: • Hydraulics systems & components • Pneumatics systems & components • Oxygen systems • Flight control systems (airframes) • Tire, Wheel, & Brake shop • Repair, assembly & disassembly of aircraft wheels • Repair, servicing, & re-treading of tires • Adjustment & replacement of aircraft brakes

  8. Outsourcing of Shop Maintenance Work • Some or all of the shop maintenance can be outsourced • Director must coordinate these activities into the maintenance plan • Quality Assurance will identify & ensure the standards these contractors must abide • Maintenance agreement with manufacturer may require the outsourcing

  9. Operation of Overhaul Shops • The pace may be slower than line or hangar maintenance but the MTTR – (Mean Time to Repair) is very important • Spare parts are purchased based on fleet failure rate & time to repair • Remove item from aircraft • Turn item into materiel for replacement • Route unit to the repair facility (in-house or outsourced) • Return serviceable unit to stores for reissue

  10. Shop Data Collection • Many data collection tasks occur within maintenance • Overhaul shops are important source • Line & hangar reports focus on systems & components • Shop data focuses on internal components of the equipment & subsystems • Identifies the servicing, repair, & overhaul actions taken – as well as the parts, supplies & time • Components are tracked for reliability – failure rates (unnecessary high) – may require corrective action from engineers, manufacturers, airlines etc..

  11. Maintenance Overhaul Shops • Introduction • Types of Shops • Engine Shops • Avionics Shops • Mechanical Shops • Outsourcing of shop maintenance work • Operation of Overhaul Shops • Shop Data Collection • Summary

  12. Questions?