Samenvatting
Samenvatting MRO Business
- Vak
- MRO Business
- Instelling
- Hogeschool Van Amsterdam (HvA)
Een complete samenvatting van het vak MRO Business.
[Meer zien]Voorbeeld 4 van de 43 pagina's
Voorbeeld 4 van de 43 pagina's
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Door: demettuncer • 4 jaar geleden
Voorbeeld van de inhoud
AMSTERDAMUNI ERSIT OF
APPLIED SCIENCES
1
A A A 2018-2019
MMAR
INE
Summary MRO Business
MRO
INE
MRO
B
B
,MRO Business – week 1
Engine Program Management
Maintenance Concepts
Continues Airworthiness Maintenance Program (CAMP)
All maintenance is based on the Continuous Airworthiness Maintenance Program, this
program defines per aircraft the maintenance requirements.
Example of References:
– Part M: Operator responsibilities
– FAA FAR 43 (Maintenance)
– FAA FAR 145: Repair station
– EASA Rulemaking
The maintenance organization is described in the MOE: Maintenance Organization
Exposition
Regulations and Controlling Authorities Aviation Industry is a tightly controlled
environment: FAA, EASA, CAA, CAAC, DGAC etc.
Training and Authorizations
Training of staff is performed in accordance with EASA Part 66 rules for certifying staff
– KLM E&M provides in house training through own training department:
o Type certificate training; ground engineers and mechanics
o Human factors training
o Specific technical training courses
– Engine services has dedicated training facility for training of Engine Services
staff
o Engine type training, dedicated skills etc.
– Where required, training is provided by OEM (Original Equipment
Manufacturer)
Quality Assurance and Quality Control and auditing system
Quality Control
– Quality Assurance and Control organization provides independent supervision
and monitoring of quality control, recognitions and authorizations
– Liaison between aviation authorities and KLM E&M
– Audit system:
o E&M facilities are frequently audited by both KLM quality control
organization as well as customers and national aviation controlling
bodies, audit remarks are required to be solved within a defined
timeframe.
Summary MRO Business 2
,On-Condition Maintenance Concept
– Consists primarily of monitoring the aircraft and engine performance at regular
intervals and determining when and which maintenance is required based on
the condition of certain operating parameters.
– Maintenance Tasks are described in MRI’s: Maintenance Required Inspections
performed at fixed intervals per certain number of flight hours.
– Engine inspections include:
o Borescoping the gaspath, using borescope equipment to inspect the
internal gaspath of the engine
o Oil system checks
o Visual zonal inspections
o Functional checks of certain systems
Hard Time Maintenance Concept
– Hard time maintenance concept is based on predetermined “hard times” to
remove components/engines for scheduled maintenance
– Regardless of actual condition
– Objective of hard time concept is to minimize any operational disruption
– Disadvantage: loss of any useable operational remaining life
– Not in use with many operators as main concept
– With certain reliability issues used in isolated cases for a component
Engine Inspections Techniques
Internal inspection of the gaspath condition.
Engine Boreblend
Internal blend repair of damaged airfoil
Thresholds
Counters to determine a required step in maintenance
– Expressed in:
o Flight hours
o Cycles (Take-Off and Landing cycles)
– Used with:
o Aircraft & Aircraft component maintenance
o Engine maintenance
Workscope Planning Guide
– Engines shop maintenance is described in document:
o Workscope Planning Guide (WPG)
§ Defines maintenance thresholds for individual modules and
components
§ Lists Air Worthiness Directives
§ Service Bulletins
§ Specific maintenance tasks based on operational experiences
§ Defines performance targets after maintenance
Summary MRO Business 3
, Engine Removal Reasons
Engines are removed for a variety of reasons:
– Replacement of life limited rotating parts like shafts and disks
– Performance deterioration:
o Thermodynamic: Loss of EGT margin (High Exhaust Gas Temperature)
o Mechanically: High Vibration levels of the rotor system(s)
– Oil leakage/consumption
– Damage to the gaspath due to:
o Deterioration
o Foreign Object Damage (example bird strikes)
– Findings during the regular inspections
Shopvisit Process & Workscoping
Engine overhaul process flow
Engine Introduction in shop;
preperation of
Incoming Engine Steering
Group meeting: work
removal documentation inspection scope determination
Cleaning/
Engine/Module/ Repair Assembly
Inspection
Assy dissasembly
process Process Process
Engine Final Inspection/ Engine
Performance Documentation released for
Test closure
Service
Stage Concept
Stage 0 Stage 1 Stage 2 Stage 3
Repair internal Assembly of assies
Receiving Disassembly
Completeness check Cleaning Repair external Assembly of
modules
Project start-up Parts disposal Replace
Incoming inspection Assembly of engine
Assembly
Workscope preparation Testrun
determination Final Inspection
Workscope approval
Declare serviceable
Engine dispatch
Summary MRO Business 4
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