Strategy and knowledge about managing maintenance in aircraft industry

2. Maintenance Package
Manufacturer
• To provide the operator
with packaging options
for fleet maintenance
program
• Increase the production
efficiency of an
organization
Operator
• Increase aircraft
availability
• Reduce production
costs

3. Maintenance Package
Considerations
Operational
considerations
• Route structure
• Flight length
• Frequency of flight
Commercial
considerations
• Traffic patterns
• Seasonal
constraints
Technical
considerations
• Maintenance
program
• Manpower skills
• Tooling

4. Block Packaging
Background
0 This is focused on the principle of grouping all
maintenance tasks that require frequent repetition under
a letter check (i.e. “A”, “B”, “C”, “D” Checks).
0 This method produces a small number of relatively large
work packages having the disadvantage of a relatively long
maintenance ground time.

5. Block Packaging Conditions
Large airplane
fleet
High utilization
Spare airplane
available
Long range
operation
Flexible
manpower
Non-scheduled
maintenance
Single centrally
located
maintenance base
Utilization varies
with calendar
season
Contract
maintenance

6. Block Packaging Advantage
Disadvantage
Advantage
• Reduces spare requirements at
out stations
• Increased ground time
• Logistical considerations for
spares are also simplified.
• Accomplishment of
modifications
• Rectification of non-routines
• More efficient sequencing of
long jobs
Disadvantage
• Manpower requirements
• the risk of the airplane
becoming a parts department
• High component removal

7. Equalized/Phase/Progressive
Package
• Tasks are arranged into many small packages all
having approximately the same ground time, less
than 8 hours
Ground
Time
• Satisfies the availability requirements specified by
airline operations and scheduling
• The larger letter checks are segmented into smaller
but more frequent work packages
Commercial
• Helps to get the maximum life out of life-limited
componentsComponent

8. Equalized Considerations
Small aircraft
fleet
Low &
Constant
utilisation
No spare
airplane
Short range
operations
Manpower
equalization
Scheduled
operations
Multiple
maintenance
locations
Maintenance
performed in
house

9. Equalized Benefit & Loss
Advantage
• Simplifies manpower planning
• High aircraft availability
• Reduced ground time
• Frequent visit supports full
component life
• Balanced workload on small fleets
Disadvantage
• High spare requirement at out
stations
• Increase in production planning and
scheduling workload
• Careful planning is required due to
the limited ground time
• There is limited time for the
accomplishment of modifications
• Short jobs are inherently inefficient
• Limited time to identify and rectify
non-routines

10. Thank You
0 Source :
0 Ir. Anthony K. Muchiri, Maintenance Planning Optimization
for the Boeing 737 Next Generation