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B Y : E S S A M D A R W E E S H E S S A M F A W A Z
2 0 0 9 0 5 6 9
Aircraft Maintenance
HTI
Mechanical Dep.
20/12/2016 Ai...
Overview
1/12/2016Aircraft Maintenance
 Introduction
 Maintenance classification.
 Inspection.
 Maintenance levels.
 ...
Introduction
1/12/2016Aircraft Maintenance
 Data and maintenance routines will be shown are
similar to global aviation ma...
Maintenance practices
1/12/2016Aircraft Maintenance
 Maintenance Practices are classified into :
 Protective Maintenance...
Checks & Protection
1/12/2016Aircraft Maintenance
 Protection against ice formation
 De-icing system.
 Anti-ice system....
Checks & Protection
1/12/2016Aircraft Maintenance
 Aircraft fuel system
 Regulation wise.
 Ram air functions:
 Pressur...
Checks & Protection
1/12/2016Aircraft Maintenance
 Protecting the engine compartment from over
pressure
Checks & Protection
1/12/2016Aircraft Maintenance
 Visual inspection.
 Checks on the engine before take-off.
 Compresso...
In-Line Checks
1/12/2016Aircraft Maintenance
Pre departure check
(PDC)
After departure
Check
(ADC)
Engine Lifetime
1/12/2016Aircraft Maintenance
 There are two parameters give the time of
maintenance :
1. Hard time.
2. C...
1.Hard Time
1/12/2016Aircraft Maintenance
 The time between overhauls.
 The total number of flight hours that the engine...
2.Cycles
1/12/2016Aircraft Maintenance
 Depend on the material used in building the engine.
 Number of cycles are fixed ...
Conditions for the one cycle
1/12/2016Aircraft Maintenance
1. Starting the engines, take off, maximum climb,
cruise, idle,...
Lifetime Of Such Types Of Aircraft
1/12/2016Aircraft Maintenance
Life (in hours)Life (in cycles)Life (in years)Aircraft Ty...
Lifetime Determining
1/12/2016Aircraft Maintenance
1. On condition
 Inspection after each flight.
 Only the module that ...
Engine Condition Monitoring
1/12/2016Aircraft Maintenance
The Figure shows sensors and parameters that show results on ECM
Maintenance Categories For Engines
1/12/2016Aircraft Maintenance
 Level A1
On engine installed on-wing
 Level B
On unins...
Maintenance Categories For Engines
1/12/2016Aircraft Maintenance
Level
B
Level
B1
Level A1
Hot section
inspection
Replacem...
Maintenance Categories For Engines
1/12/2016Aircraft Maintenance
Level C
Level C1
Repair parts
by using
hand tools
Sheet m...
Maintenance sence
1/12/2016Aircraft Maintenance
Engineering sence, experience, and instructions of the
maintenance manual ...
Maintenance sence
1/12/2016Aircraft Maintenance
Very Dangerous Less Dangerous
Engine Cleaning
1/12/2016Aircraft Maintenance
Carbo Blast
• Engine is turned on at idle speed.
• Detergent is sprayed into...
Preservation Routine
1/12/2016Aircraft Maintenance
Storing engine
for less than
90 days
All openings
must be closed
Silica...
De reservation Routine
1/12/2016Aircraft Maintenance
Removing the
cover from all
openings
Restoring the
correct oil
level ...
Conclusion
1/12/2016Aircraft Maintenance
 Aircraft engineering and maintenance need to be
familiar with any components in...
Discussion
1/12/2016Aircraft Maintenance
1/12/2016Aircraft Maintenance
Thank you ! 
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Aircraft Maintenance

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Aircraft Maintenance

  1. 1. B Y : E S S A M D A R W E E S H E S S A M F A W A Z 2 0 0 9 0 5 6 9 Aircraft Maintenance HTI Mechanical Dep. 20/12/2016 Aircraft Maintenance Supervised by/ Dr. Manal Amin Eng. Mohammed Fathy
  2. 2. Overview 1/12/2016Aircraft Maintenance  Introduction  Maintenance classification.  Inspection.  Maintenance levels.  Servicing & cleaning.  Preservation & de-reservation.
  3. 3. Introduction 1/12/2016Aircraft Maintenance  Data and maintenance routines will be shown are similar to global aviation maintenance.  Aviation engineering and aircraft maintenance start from studying the components of each part.  Aircraft maintenance like any maintenance-line routine.  Protection and checks on systems need to study the whole system.  There are two main types of maintenance…
  4. 4. Maintenance practices 1/12/2016Aircraft Maintenance  Maintenance Practices are classified into :  Protective Maintenance. A. Inspection o Daily inspection. o Periodical inspection. B. Servicing  Corrective Maintenance.
  5. 5. Checks & Protection 1/12/2016Aircraft Maintenance  Protection against ice formation  De-icing system.  Anti-ice system. De-icing system Anti-icing system
  6. 6. Checks & Protection 1/12/2016Aircraft Maintenance  Aircraft fuel system  Regulation wise.  Ram air functions:  Pressurization of fuel tanks.  Replacing the used fuel with air  Fuel Temperature control.
  7. 7. Checks & Protection 1/12/2016Aircraft Maintenance  Protecting the engine compartment from over pressure
  8. 8. Checks & Protection 1/12/2016Aircraft Maintenance  Visual inspection.  Checks on the engine before take-off.  Compressor.  Bearings.  Oil systems.
  9. 9. In-Line Checks 1/12/2016Aircraft Maintenance Pre departure check (PDC) After departure Check (ADC)
  10. 10. Engine Lifetime 1/12/2016Aircraft Maintenance  There are two parameters give the time of maintenance : 1. Hard time. 2. Cycles.
  11. 11. 1.Hard Time 1/12/2016Aircraft Maintenance  The time between overhauls.  The total number of flight hours that the engine can make before it is entered into the overhaul maintenance.  The hard time specified by the manufacturer
  12. 12. 2.Cycles 1/12/2016Aircraft Maintenance  Depend on the material used in building the engine.  Number of cycles are fixed for a given material.
  13. 13. Conditions for the one cycle 1/12/2016Aircraft Maintenance 1. Starting the engines, take off, maximum climb, cruise, idle, landing, shutting down the engines. 2. Reaching to high powers. 3. The engines are used to move the aircraft from one location to another.
  14. 14. Lifetime Of Such Types Of Aircraft 1/12/2016Aircraft Maintenance Life (in hours)Life (in cycles)Life (in years)Aircraft Type 600003600020Airbus-300 600003500020Airbus-310 510007500020Boeing-737 --10000040Boeing-757
  15. 15. Lifetime Determining 1/12/2016Aircraft Maintenance 1. On condition  Inspection after each flight.  Only the module that has the problem will go maintenance not the engine as a block. 2. Engine condition monitoring (ECM)  Continuous monitoring of key engine parameter.  Uses standard engine and aircraft instrumentation for monitoring.  No additional measurement equipment is needed.
  16. 16. Engine Condition Monitoring 1/12/2016Aircraft Maintenance The Figure shows sensors and parameters that show results on ECM
  17. 17. Maintenance Categories For Engines 1/12/2016Aircraft Maintenance  Level A1 On engine installed on-wing  Level B On uninstalled engine  Level C Repairing parts  Level D1 On accessories, pumps, starter, generator,  Level T1 Engine testing
  18. 18. Maintenance Categories For Engines 1/12/2016Aircraft Maintenance Level B Level B1 Level A1 Hot section inspection Replacement of (Fan, LPT,HPT) Level B2 Engine modules are disassembled Replacement of bearings Replacement parts without disassembling Level B3
  19. 19. Maintenance Categories For Engines 1/12/2016Aircraft Maintenance Level C Level C1 Repair parts by using hand tools Sheet metal work Level C2 Level C3
  20. 20. Maintenance sence 1/12/2016Aircraft Maintenance Engineering sence, experience, and instructions of the maintenance manual are very important in making correct servicing.
  21. 21. Maintenance sence 1/12/2016Aircraft Maintenance Very Dangerous Less Dangerous
  22. 22. Engine Cleaning 1/12/2016Aircraft Maintenance Carbo Blast • Engine is turned on at idle speed. • Detergent is sprayed into the engine intake. Water Washing • Sealing any openings to engine components. • Engine is rotated by dry cranking. • Water is sprayed into the engine intake.
  23. 23. Preservation Routine 1/12/2016Aircraft Maintenance Storing engine for less than 90 days All openings must be closed Silica gel put inside the engine Humidity must be monitored Storing engine more than 90 days Same steps Fuel paths must be evacuated from fuel and filled with oil
  24. 24. De reservation Routine 1/12/2016Aircraft Maintenance Removing the cover from all openings Restoring the correct oil level in the oil tanks Replacing oil with fuel in fuel paths
  25. 25. Conclusion 1/12/2016Aircraft Maintenance  Aircraft engineering and maintenance need to be familiar with any components in aircraft.  No way for any default in maintenance whether in preventive or corrective maintenance routine.  Maintenance of aircraft classified into levels.  Determining lifetime of the aircraft is very important.
  26. 26. Discussion 1/12/2016Aircraft Maintenance
  27. 27. 1/12/2016Aircraft Maintenance Thank you ! 

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