Masters in project management Assignment

Masters in project management

Abstract
Purpose: The aircraft industry is might want to incorporate the lean six-sigma process in for
enhancing the maintenance and operational plan of the aircraft. The integration of six sigma
policies helps in providing the upgraded maintenance program for improving the quality of
the service provided to the customers. It helps in reducing time spent on the maintenance,
repair, and overhauling session organized for the aircraft.
Result: The designing of the literature review is suitable for my project because it helps in
analysing the application of the accumulative framework of lean philosophy and six sigma
working principles for upgrading of the wheels, mechanical equipment, landing gears
overhauling program, interchanging and updating the brakes and braking architecture,
innovation in the carriage flap tracking system, overhauling of the spare parts, and others
which helps in increasing the sale of the aircraft. The supply chain management of the
repairing elements should be supplied within the time frame to accelerate the performance of
the MRO session.
Conclusion: During the course plan, we are able to analyse that the application of the six
sigma principles helps in modifying the aircraft design and defects according to the
requirement. The maintenance cycle time can be effectively reduced for providing in-time
aircraft design for taking flight.
Keywords: MRO Session, CTQ issues, Lean Six Sigma Framework
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Contents
1. Introduction.........................................................................................................................3
2. Problem Statement and Justification...................................................................................4
3. Literature Review- An Analysis of the related work..........................................................5
4. Proposed solution Approach.............................................................................................13
Suggestion for Future scope of the project:..........................................................................18
5. Conclusion........................................................................................................................18
6. References.........................................................................................................................19
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1. Introduction
The aviation industry is looking for new opportunities to provide quality of service to the
customers so that they can achieve long term sustainability in the global market. The
communication between the distant places can be improved with the effective utilization of
repair and maintenance program for the Aircraft organization. The aircraft companies are
facing some challenges in predicting and forecasting the area of concern for improvement
and as a result, we looked to incorporate the lean six-sigma process in for enhancing the
maintenance and operational plan of the aircraft (Sunjka and Murphy, 2014).
The critical quality issues which exist with the Aircraft industry can be identified with the use
of lean six sigma process. The supply chain management program for the aircraft
maintenance program can be effectively done with the use of Lean six sigma policy structures
and framework. The integration of six sigma policies helps in providing the upgraded
maintenance program for improving the quality of the service provided to the customers. It
helps in reducing time spent on the maintenance, repair, and overhauling session organized
for the aircraft (Stadnicka, and Ratnayake, 2017).
The lean six sigma process is based on two principles which are categorised as value creation
of the process and analysis of the customer requirement (Lazur, Jaadeesh, Karthikeyan,
Shanmugarja, 2015). The maintenance program cycle time can be reduced by implementing
the principles of six sigma whereas as problem driven structured format can achieved by
implementing the six sigma process (Maleyeff, 2014). The maintenance and repairing
program of the aircraft can be improved with the implementation of amalgamation program
of lean and six sigma working process to get improved performance.
2. Problem Statement and Justification
Problem Statement:
The loss of bonding with the loyal customers affect the financial condition of the enterprise
due to the lack of quality service, not in time delivery and departure of the flight, limitation in
the safety measures, spare parts and control system. The step should be taken to upgrade the
maintenance and repair system of the aircraft to provide quality of service to the customers.
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Justification:
The increasing demand of globalization put extra burden on the aircraft industry to provide
quality of service to the passengers for making their flight experience memorable. The major
concern of the people is the heavy cost which they have to pay at the time of emergency
condition such as medical emergency, and others. The revolution in the aircraft industry had
made route of the flight more intense and complicated. The maintenance programs are
arranged for the flight to achieve the long term sustainability of the enterprise. The reliability
of the safety measures should be upgraded according to the demand and changing weather
condition. The innovation in the business processes of the aircraft industry can be carried out
with the use of Lean six sigma policy frameworks because it helps in eliminating extra cost
incurred on maintenance processes (Siva, Patan, Kumar, Purusothaman, Pitchai, Jegathish,
2017).
The six sigma policies helps in aligning the maintenance program of aircraft with the
organization objectives of achieving sustainability and remain ahead of the competitors by
gaining competitive advantage through innovation in the services provided to the customers
which helps in increasing customer satisfaction level and trust on the company. It helps in
developing strong relationship with the customers and gain in profitability of the aviation
industry (Panagopoulus, Atkin, and Sikora., 2016). The problem domain had been
undertaken for reducing the cost and increasing the productivity of the aerospace industry
with the utilization of lean programming fundamentals. The maintenance cycle time can be
effectively reduced for providing in-time aircraft design for taking flight (Murphy, 2015).
Research Limitation: The proposed project is dependent on the qualitative methodology for
collecting data required for the research. It does not make use of quantitative methodology
for getting the accuracy in the practical application of proposed six sigma policies.
The qualitative approach of methodology is used for collecting the required data for the
research through online and offline sources
3. Literature Review- An Analysis of the related work
The literature review is conducted on increasing the efficiency of the aircraft by
deploying MRO principles with the use of Lean Six sigma process. The six sigma policy
framework is comprised of five processes which are categorised as:
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Definition: Definition of the problem statement for maintaining, upgrading, and repair
according to the requirement
Identification: It divides the complete process into two mode which are value driven program
and elimination of the waste processes. This concept helps in reducing the time spent of
maintenance, repair, and overhauling session organized for the aircraft (Siva, Patan, Kumar,
Purusothaman, Pitchai, Jegathish, 2017).
Value Creation: The focus should be given on the area of concern such as lack of quality
service, not in time delivery and departure of the flight, limitation in the safety measures,
spare parts and control system. The priority is organized for sequencing and systematic
format for the maintenance and repairing program. The continuity of the process step can be
managed on the process priority
Analysing the customers requirement: The requirement of the customers should be satisfied
when they actually want their requirement to be satisfied such as at the time of medical
emergency (Zucker, 2014).
Perfection: The Lean sig sigma policy works in the direction of achieving perfection in the
maintenance and upgrading program of the aircraft.
The MRO is applied on the aircraft according to the requirement plan which helps in
providing quality of service to the customers. The analysis of the MRO helps in defining the
adequate plan for improving the quality of the aircraft. The requirement of the MRO depends
on the following categorise which are specified in the table below
Types of MRO Description
Heavy maintenance of the
aircraft
The requirement placed by the staff members to replace the
mechanical components of the aircraft with the new and
upgraded equipment. It helps in improving the performance
of the engine.
Overhauling of the Aircraft
Engine
The overhauling of the engine helps in improving the
processing time of the engine, routine checking of the
engine, and repairing of the required component of the
engine.
Overhauling of the component
Mechanical parts
The overhauling of the component mechanical parts helps
in initializing the upgraded version of emergency safety
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system, hydraulic system, and others
Safety check-up of the aircraft The safety check up helps in improving the performance of
the aircraft in the emergency situation. It helps in providing
the quality of service to the customers
Overhauling of the electronic
components
The overhauling of the electronic components helps in
including the Avionic system in the aircraft
Retro fits Improvement in the facilities provided to the customers
The effectiveness of the lean six sigma principles deployed on reducing the MRO time for
Aircraft. The lean six sigma policy framework is the combination of two processes. The
implication of the six sigma process helps in increasing the efficiency and effectiveness of the
MRO program organized for the aircraft improvement and maintenance process. The
application of the lean six sigma process helps in improving the quality of service provided to
the customers, reducing the maintenance and repairing cost of the aircraft, effective flow of
information, improved quality of the output received, perfection in the final output in the
aircraft maintenance program, and others. The quality of service can be improved with the
initialization of the Maintenance, repairing, and overhauling of the Aircraft unit according to
the requirement of the consumers and the staff members.
Value Stream mapping program
The value stream mapping should be enabled for enhancing the performance of the aircraft.
The value stream mapping is performed for dividing the process into different categories such
as value added process, non-value added process, and elimination of waste process. The
division of the process helps in reducing the cycle time of the maintenance process. The
principle of lean six sigma processes are applied for determining the working process related
to the current state mapping system, division of value added process, non-value added
process, and elimination of waste process, development of working plans for improving the
current state of the aircraft unit, proposal for reducing the cycle time of maintenance
program, and others. The Value added mapping tools should be applied to the aircraft
maintenance program for identifying the distribution of the value added and non-value added
process for improving the flow of production process. The high level visualization of the
improvement plan for the aircraft should be drawn with the implication and identification of
the value added process and associated tools.
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The prioritization function is the most important function in deploying VSM technology
because it helps in setting priorty to the non-added value process which are served during the
MRO program of the aircraft. The principles of value state mapping process are highlighted
below:
 Categorisation of the value added process, non-value added process, and elimination
of the waste process
 Setting priority program with the non-value added process
 Identification of the obscure and flaws in the current working process of the MRO of
aircraft
 Mapping of the value process with the requirement of the customers and the staff
members
 Development of the future state mapping program
 Refinement of the gaps in the current working process of MRO aircraft
 Development of the action plan for improving the value state mapping process
 Analysis of the work time related with the MRO process
 Improving the quality of service provided to the customers
 Reducing the maintenance and repairing cost of the aircraft
 Effective flow of information
 Improved quality of the output received
 Perfection in the final output in the aircraft maintenance program
The effective value stream mapping can be done by dividing the MRO process into five
stages which are classified as below:
Identification of the working process: Telera, suggested that the strategy should be developed
for categorising the undertaken process of MRO aircraft into value added process, non-value
added process, and elimination of the waste process. From the research, it had been found
that in the maintenance program of aircraft the value added activities are only comprised of
5%, non-value activities are comprised of 60%, and 35% of waste process (Tenera, 2014).
Analysis and identification of work process time: The effective value state mapping program
for applying MRO program to the aircraft can be effectively done with the implication of
work process time. The association of the processing time with the undertaken work process
helps in identifying the total maintenance cycle time which is utilised for developing the
aircraft according to the requirement of the customers. Telera, suggested that the internal
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operation performed for MRO should be aligned with the final design of the value state
mapping process for accelerating the improvement and maintenance processs. Mansfield,
focuses on the processing time of MRO session can be reduced up to 70 to 80% for getting an
upgraded version of the flight which is ready for providing quality service to the customers It
helps in reducing the cycle time of maintenance program up to 65% to 96% of the upgraded
program (Mansfield, 2013).
Process Mapping: The deployment of VSM tools helps in dividing the processes into value
added process, non-value added process, and waste process. Ayeni, suggested that The
elimination of the waste process helps in reducing the time required for completing the MRO
operation on the aircraft. Some of the waste processes are categorised as defects and incorrect
information, overproduction and the processes which are not required, waiting of process
completion to undergo for next activity, not utilization of the talent and expertise of the
working team members, elimination of product transportation process, maintenance of
inventory management, reducing the extra processing work, and underutilization of the
workman force (Ayeni, 2015).
Calculation of MRO cycle time: The time required completing the one MRO cycle depends
on minimum time required and the maximum time required for completing the process. The
difference between the maximum time and minimum time helps in calculating the current
state time required for completing the cycle of MRO on aircraft.
Development of the Future state mapping: The analysis of the process mapping on value
added process, non-value added process, and waste process helps in identifying the waste
process which can effectively remove from the cycle to reduce the MRO processing time.
The following table shows the list of sequence operation which are performed on the aircraft
improvement plan to deploy the session of maintenance, repair, and overhauling program.
S.no Sequence of
Maintenance operation
Value Added Process Non-value added
process
1. Acceptance of the
aircraft induction time
No Yes
2. Deployment of the
testing and inspection
No Yes
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program
3 Use of Jacks Yes No
4. Removal of wear and
tear component
Yes No
5. Quality service
component
Yes No
6. Installation of the new
spare parts in the
engine
Yes No
7. Painting of the aircraft No Yes
8. Inspection process No Yes
9. Restructuring of the
aircraft engine
Yes No
10. Fitting of the spare part No Yes
11. Functional checking of
the component spare
part
Yes No
12. Final Air testing of the
flight
No Yes
13. Final upgrading of the
equipment
No Yes
14. Final Painting No Yes
15. Delivered to the
customers
Yes No
The maintenance, repairing and overhauling of the aircraft can be effectively done with the
use of DMAIC policy framework for applying lean and six sigma principles ((Hill, Thomas,
Jones, and Kateb., 2017). The DMAIC policy framework model is highlighted below:
 Define: The problem identification is the basic requirement of applying MRO on
aircraft which is depend on customer requirement specification plan
 Measure: This process works on prioritizing the undertaken process on the basis of
value added process, non-value added process, and waste process. It helps in setting
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out the clear goals and concern areas which should be undertaken for improvement of
the aircraft model
 Analyse: The analysis of the MRO principle helps in categorising the waste process
which should be undertaken for eliminating it from the maintenance cycle program. It
reduces the cycle time of the MRO program applied on the aircraft
 Improve: The action plan which should be undertaken for improving the quality of the
aircraft should be highlighted so that it helps in analysing the root cause of the
improvement and providing the best suitable solution according to the requirement of
concern areas of the aircraft ((Ayeni, PBaines, Lightfoot., and Ball., 2015).
 Control: The control policy structure should be defined for the undertaken MRO so
that the consistency of the approved program can be maintained for achieving
sustainability in the aircraft model.
The dramatic improvement in the lean six sigma policy framework helps in improving the
operational and the maintenance program of the business processes. The competitive
advantage can be gained by determining the six sigma policy framework with the use of
DMAIC methodology ((Ali, 2016). The equipment inventory can be checked with the
utilization of six sigma tools for the advanced manufacturing material and repairing of the
aircraft. The repairing design process can be completed within cost and timeline of the
proposed project. The following table helps in determining the application of lean six sigma
principles based on DMAIC policy framework for improving the MRO program of the
aircraft.
Lean Principles
Phases Train and
Prepare
Specification of
the value creation
Synchronizatio
n of the value
stream
mapping
Creating
flow of
control
Demand
and
Perfection
S
i
x
s
Define Lean six sigma
procedures for
ensuring the
management
program and
Focus should be
given on the
customers
requirement
Focus should
be given on the
inspection of
the aircraft
design
Focus
should be
given on
defining the
problem
MRO
principle
should be
defined for
analysing
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i
g
m
a
P
r
i
n
c
i
p
l
e
setting required
goal of updating
the procedures
for maintenance
of the aircraft
program
domain the OTR
(Order to
receipt)
procedures
for
incorporati
ng the
required
changes in
the program
Measure Role and
responsibilities
should be
divided
according to the
skills and
expertise of the
employees
Consideration
should be given to
the process
analysis and the
gaps which exist
in the aircraft
design
The activities
should be
designed for
value stream
mapping
according to
the changes
required in the
aircraft design
and its
component
Division of
work should
be revised
due to the
addition
late calls of
upgrading
the system
Order to
receipts are
used for
analysing
the
performanc
e of the
aircraft
under
consideratio
n
Analyse Monitoring of
the routine work
of the employees
Analysis of the
critical quality
issues which exist
with the aircraft
maintenance
program
Pareto
analysis
should
performed for
identifying the
value added
process, non-
value added
process, and
enabling value
added process
for reducing
the
Restructurin
g of the
operational
framework
for
providing
enhanced
control
measures of
the required
configuratio
n in the
aircraft
The
workload of
the
maintenanc
e cycle can
be reduced
by
analysing
the OTR for
setting new
targets of
improvemen
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maintenance
cycle time of
the aircraft
design
upgrading
model
component
structure
t
Improve Parameters
should be
designed for
removing the
issues
Resolving the
issues of the team
members
Focus should
be given on th
problem
domain for
identifying the
key issues
which are exist
with the design
Pilot
analysis
testing
procedures
should be
used for
removing
the flaws
and the
obscure
from the
design
model of the
aircraft
Systematic
arrangemen
t of delivery
system for
imposing
customer
expectation
Control Management of
the control
structure
The control
board should set
quality standard
for measuring
the performance
of the aircraft.
Controlling and
monitoring of
customers value
and requirement
plan. The
continuous
upgrading and
maintenance
program helps in
bringing
perfection in the
required task
which are
undertaken for
Training and
development
program
should be
arranged for
aligning the
key activities
of the
upgraded
process with
the setting f
upgrading
goal of the
Control
procedures
should be
designed by
focusing on
the required
MRO
program
Specificatio
n of new
process for
upgrading
the aircraft
design
according
to the
requirement
specificatio
n plan of
the
customers
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the designing
principles of
MRO aircraft.
aircraft
The operational performance of the aircraft industry can be improved by applying DMAIC
approaches associated with the lean and six sigma policies. It helps in analysing the
systematic review of lean principles and how they are used in improving the maintenance and
operational plan of the aircraft. The research was proposed to analyse the DMAIC policy
framework which works on five fundamental concepts which are categorised as value
specification, value identification, smooth flow of maintenance program, and perfection in
the level of services ((Kolanjiappani, and Maran, 2011). It helps in analysing the complexity
and critical evaluation of the maintenance program organised for improving the current state
of the aircraft. The DMAIC helps in reducing the cost of the maintenance program by
eliminating waste processes equipped in the working model of the aircraft. The reliability of
the lean six sigma operation can be measured by the efficiency of the aircraft to provide
quality of service to the customers and the capability of the aircraft to handle the fault
tolerance in emergency situation ((Johnson, and Dubikovsky, 2015).
4. Proposed solution Approach
The analysis of the literature review helps in implementing the principles of a lean six sigma
policies in the development of the maintenance, repair and overhauling program for the
effective design of the aircraft. The address should be given to the Line and base maintenance
work for effective design of MRO principles for aircraft.
 The line maintenance program focuses on identifying the aircraft components which
are facing problems of wear and tear and wants to be upgraded according to the
requirement specification of the customers.
 The base maintenance program is arranged for analysing the functionality and
serviceability of the designed aircraft. The performance can be ensured by analysing
the effectiveness during the operational arrangement of the flight.
Overview of Lean Six sigma principles:
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The accumulative framework of lean philosophy and six sigma policy framework helps in
eliminating the waste processes by removing the defects, over-production of the process,
transportation management, inventory management, and organizational change management.
The six sigma policy framework is based on following processes:
Process Description
Separation of the waste The tools and technologies are required for
separating the waste processes from the
maintenance program of the aircraft
Setting priority The priority program is organized for setting
value creation to the processes which should
emphasised for enhancing the working
capability of the system.
Shine and transparency The transparency should be built up in the
clear definition of role and expertise.
Standard protocols Standard protocols should be used for
providing the perfection and quality of
service to the aircraft design.
Sustainability The maintenance, repair, and overhauling
procedures are laid down for achieving the
sustainability of the aircraft industry by
satisfying the customer requirement (Kumar,
Luthra, Haleem, and Garg, 2015).
The MRO program arranged for aircraft upgrading with the implication of lean six sigma
working principles focuses on dividing the process activities into three categories which are
classified as
 Value added activities: The value added activities helps in increasing the product
value for increasing the satisfaction level of the customers. It has been found that only
5% of the upgraded processing elements of the aircraft system are come under the
category of value added activities.
 Non-Value added activities: The upgrading of these activities does not have any
impact on the customer satisfaction level because they are driven for managing the
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mechanical requirement of the aircraft for proposing safe flight journey of the
customers. It focuses on upgrading the spare part of the aircraft, processing speed of
the processor, and others. 65% of the upgraded processing elements of the aircraft
system are come under the category of non-value added activities (Kang and Apte,
2007).
 Enabling value added activities: The emphasis on these activities helps in designing
continuity service management framework for the undertaken policies. 35% of the
upgraded processing elements of the aircraft system are come under the category of
enabling value added activities (Johnson, and Dubikovsky, 2015). The analysis of
these activities helps in bringing operational efficiency of the upgraded version of the
aircraft service program.
Proposed Implementation of DMAIC principle in designing of the MRO of Aircraft:
Level 0: Pre-Implementation Phase of LSSS Principles:
The pre-implementation phase opens a new opportunity to motivate the employees for
outlining the problem domain of the proposed aircraft design. The training and development
program for the staff is arranged to expertise their skills in the lean six sigma framework.
Level 1: Analysis of the Problem Domain
The problem domain of the aircraft is analysed to generate need of maintenance, repair, and
overhauling program on it (Stephen, and Blokland, 2016). The configuration of the aircraft is
taken under consideration to know the area of concern for aligning the service technical plan
to ensure the good quality of the proposed aircraft. The non-value added analysis should be
performed on the aircraft to predict the area which requires upgrading and maintenance
program. The non-value added process which are selected for analysis are receipt of the
engine, process of assessment, engine strip, module strip, inspection process, call off new
requirement, receipt of spare part, rebuilding of the module, generation of module test,
rebuilding of the engine, checking of the aircraft flight stages, final inspection of the process,
final testing of the flight, dispatching of the flight, and others (Choudhary, 2015).
Level 2: Designing of the concern areas:
The analysis of the non-value added activities gives rise to the operational phase for
improvement. The induction phase focuses on requirement generated by the customer and the
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technical requirement which arises through the inspection process will be entered into the
ERP system (Khaled, 2013). The engineering team apply their full effort to resolve the
problems which are listed in the ERP system such as cleaning of the strip, checking the
performance of the aircraft engine, repairing process, upgrading of the spare part, solution to
the customer requirement, and others (Ayeni, Baines, Lightfoot., and Ball., 2015). The ERP
system upgraded according to the specification included in the aircraft design after the MRO
session. The supply chain management of the repairing elements should be supplied within
the time frame to accelerate the performance of the MRO session. The testing of the final
module should be carried to for measuring the final assessment of the program.
Level 3: Designing of the Critical to quality issues:
The CTQ session is organized for evaluating the quality risks which are associated with the
proposed aircraft design. It helps in eliminating the risks and quality factors which are
associated with the perfection in the aircraft design to provide superior quality of service to
the customers. It is the last call for the assessment of the defects in the aircraft design which
requires improvement (Karunakaran, 2015). The following diagram shows the cause-effect
session for analysing the last call for the aircraft design defects for improvement.
The inspection of the service modules and the technical area helps in generating order to
receipt (OTR) for the last call of improvement. The analysis of the OTR helps in scrapping
16

out the defects in the aircraft design (Hill, Thomas, Jones, and Kateb., 2017). The analysis
can be effectively done for generating a control plan in order to eliminate the undergone
process of assessment. The internal operation performed for MRO should be aligned with the
final design and OTR request plan for speeding up the process of improvement (Tenera,
2014). The perfect final design can be obtained with the inclusion of the LSSS services to
design an MRO program for removing the defects in the aircraft and upgrading the design
according to the customer requirement. The processing time of MRO session can be reduced
up to 70 to 80% for getting an upgraded version of the flight which is ready for providing
quality of service to the customers (Ghaleb, Shareif, Sebaie, 2014). The following flowchart
shows the efficiency of the lean six sigma policy in reducing maintenance, repairing, and
overhauling time:
Suggestion for Future scope of the project:
The waterfall methodology should be used for applying the six sigma principles on the
maintenance and repairing of the aircraft because it helps in examining the clear requirement
17

for improvement to provide quality services to the customers. It is recommended that the
practical application of the proposed project of applying six sigma principles on the MRO
program of the aircraft helps in reducing the maintenance time with providing perfection in
the outcome design of the aircraft.
5. Conclusion
The implementation of the six sigma principles for maintenance, repair, and overhauling of
the aircraft helps in reducing the formal time period of maintenance program with
maintaining perfection in the aircraft quality to satisfy the customer requirement. During the
analysis of the literature review, we come across with difference in the viewpoint with the
designing of the MRO program using Lean Six Sigma policy structure. During the course
plan, we are able to analyse that the application of the six sigma principles helps in modifying
the aircraft design and defects according to the requirement. The maintenance cycle time can
be effectively reduced for providing in-time aircraft design for taking flight. The internal
requirement placed by the technical staff of the aircraft industry and the external requirement
placed by the customers can be effectively resolved through the MRO session by making use
of lean six sigma principle for improving the design specification. The lean methodology
primarily focuses on analysing the value added process, non-value added process and
enabling process for reducing the time spent in the maintenance and repairing program of the
aircraft. The designing of the literature review is suitable for my project because it helps in
analysing the application of the accumulative framework of lean philosophy and six sigma
working principles for upgrading of the wheels, mechanical equipment, landing gears
overhauling program, interchanging and updating the brakes and braking architecture,
innovation in the carriage flap tracking system, overhauling of the spare parts, and others
which helps in increasing the sale of the aircraft. The supply chain management of the
repairing elements should be supplied within the time frame to accelerate the performance of
the MRO session. The implementation of the lean six sigma policy structure helps in
eliminating the waste process for carrying out effective program maintenance, repair, and
overhauling procedures laid down for upgrading the aircraft design and component parts. It
helps in reducing the cycle time of maintenance program up to 65% to 96% of the upgraded
program. The configuration of the aircraft is taken under consideration to know the area of
concern for aligning the service technical plan to ensure the good quality of the proposed
aircraft. The accumulative framework of lean philosophy and six sigma policy framework
18

helps in eliminating the waste processes by removing the defects, over-production of the
process, transportation management, inventory management, and organizational change
management. The priority program is organized for setting value creation to the processes
which should emphasised for enhancing the working capability of the system.
6. References
Ali, A. (2016). Applying lean to the AC-130 maintenance process for royal Saudi air force.
1st ed. Retrieved from http://www.dtic.mil/dtic/tr/fulltext/u2/1017981.pdf
Ayeni, P. (2015). Enhancing competitive advantage through successful lean realisation
within the aviation maintenance, repairing, overhauling industry. 1st ed. Retrieved
from
https://dspace.lib.cranfield.ac.uk/bitstream/handle/1826/11317/Ayeni_P_2015.pdf;jse
ssionid=A68B7483D184F6E93121ECA7B51BC875?sequence=1
Ayeni, P., Baines, T., Lightfoot., H. and Ball., P. (2015). State of the art of lean in the
aviation maintenance repair overhaul industry. 1st ed. Retrieved from
https://dspace.lib.cranfield.ac.uk/bitstream/handle/1826/7781/State-of-the-art_of-
Lean-in_aviation_maintenance-2011.pdf?sequence=1&isAllowed=y
Choudhary, G. (2015). Six sigma Concept: A complete Revolution. 1st ed. Retrieved from
https://www.ermt.net/docs/papers/Volume_3/2_February2014/V3N2-139.pdf
Ghaleb, A., Shareif, M., Sebaie, G. (2014). Study of tools, techniques, and factors, used in the
lean six sigma. 1st ed. Retrieved from https://www.ijser.org/researchpaper/Study-of-
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