787 a check c check

Sure — a C-check for a Boeing 787-8 Dreamliner is a part of the aircraft’s scheduled maintenance program, typically performed every 20–24 months or after a set number of flight hours/cycles, depending on the airline’s maintenance planning document (MPD) and regulatory authority (e.g., FAA or EASA).


Here’s an outline of a typical C-check inspection checklist for a Boeing 787-8:





C-Check Inspection Overview – Boeing 787-8




1. Airframe Inspection




  • Fuselage: Structural inspection for cracks, dents, corrosion.
  • Doors & Windows: Latches, seals, hinges, and pressure integrity.
  • Wings & Empennage: Spars, ribs, skin panels.
  • Landing Gear: Struts, actuators, tires, brakes, and uplock mechanisms.




2. Flight Control Systems




  • Surfaces: Elevators, rudders, ailerons – hinges, linkages, and actuators.
  • Fly-by-wire system checks: Software versioning, signal verification.




3. Engines and Nacelles (GEnx or Trent 1000)




  • Engine mounts, fire detection systems, and pylon attachments.
  • Fan blades and internal borescope inspection.
  • Oil, hydraulic, and fuel leak inspection.




4. Electrical and Avionics Systems




  • Check power distribution units (PDUs) and Integrated Modular Avionics (IMA).
  • Verify communication, navigation, and surveillance systems.
  • Battery inspection (especially lithium-ion on 787s).




5. Environmental Control System (ECS)




  • Cabin air system, packs, bleed air systems.
  • Humidity control and cabin pressure monitoring.




6. Fuel System




  • Tanks, pumps, venting systems, and fuel quantity indication.
  • Inspections for microbial growth and seal integrity.




7. Hydraulics




  • Check for leakage, pressure stability, accumulator pre-charge.
  • Inspect flight control actuators and hydraulic power transfer units (PTUs).




8. Auxiliary Power Unit (APU)




  • Operational check and borescope inspection.
  • Check fire detection/suppression systems.




9. Cabin and Interior




  • Inspection and functional check of seats, lavatories, oxygen systems.
  • Smoke detectors, emergency lighting, and PA systems.




10. Software and Aircraft Health Monitoring




  • Updates to flight control and system management software.
  • Review health monitoring logs (e.g., Boeing Airplane Health Management system).






Documentation & Certification




  • Logbook entries and sign-offs by certified maintenance engineers.
  • Compliance with Airworthiness Directives (ADs) and Service Bulletins (SBs).
  • Update maintenance tracking systems (e.g., TRAX, AMOS, or Maintenix).





This is a generalized checklist — each airline customizes it based on their Approved Maintenance Program (AMP) and Boeing’s Maintenance Planning Data (MPD).


From Blogger iPhone client



Absolutely. An A-check is a lighter and more frequent maintenance check compared to the C-check. It’s part of the routine maintenance schedule for commercial aircraft, including the Boeing 787-8, and helps ensure airworthiness between more intensive checks.





A-Check Overview – Boeing 787-8




Frequency



  • Typically every 500–750 flight hours, or about 6–8 weeks, depending on the airline’s maintenance schedule and utilization.
  • Takes around 6–24 hours to complete.
  • Often done overnight at an airport maintenance base (line maintenance hangar).






Typical A-Check Task Categories




1. General Visual Inspections



  • Fuselage & Wing Surfaces: Exterior panels for dents, cracks, fluid leaks, missing fasteners.
  • Landing Gear & Tires: Wear, tire pressure, brake wear pins, hydraulic leaks.
  • Cargo Doors & Passenger Doors: Latches, seals, and proper operation.




2. Systems & Component Checks



  • Hydraulics: Reservoir levels, leaks, pressure checks.
  • Electrical Systems: Battery condition, generator load checks.
  • Avionics: Functional tests of nav, comm, and flight management systems.




3. Cabin & Emergency Equipment



  • Oxygen Systems: Bottle pressure, masks, and deployment mechanisms.
  • Fire Extinguishers & Emergency Lighting: Pressure, expiry, and functionality.
  • Seats, Belts, Lavatories: General condition and secure fittings.




4. Engines & APU



  • Fan Blade Visual Inspection: FOD (foreign object damage), nicks.
  • Oil Level Checks: Top-off as needed.
  • Filter Inspections: Bypass indicators and replacements if needed.




5. Software & Diagnostics



  • Check for error messages from the Aircraft Condition Monitoring System (ACMS) or Airplane Health Monitoring (AHM).
  • Update minor software packages if required (787s have extensive avionics software).






Typical Deliverables Post A-Check



  • Signed maintenance log entries.
  • Updates to the aircraft’s digital maintenance tracking system.
  • Rectification of any deferred defects (MEL/CDL items).






Tools & Systems Involved



  • Electronic Flight Bag (EFB) for recording tasks.
  • Maintenance software like TRAX, AMOS, or Maintenix.
  • Use of 787-specific GSE (Ground Support Equipment) and remote diagnostics tools.






Difference Between A-Check and C-Check