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Nomenclature
NP Net profit
THP Throughput rate
OE Operating expenses incurred during the same time window as of throughput and is assumed to be made of material cost, labor cost (regular hours and OT hours payment), etc. for the particular task year
K , Number of aircrafts in the waiting line that represents the size of the time buffer required in front of the CCR activities in the major overhaul process flow
LDP Liquidated damages penalty paid to the customer for late delivery of aircraft
µ J , Rate of service at "j , " capacity constrained resources activities over a stated interval of time (j , =1, 2, 3, ..., m , CCR activities in the overhaul flow network)
Z THP , Profit earned from on-time delivery of one aircraft for the particular task year
I j , Level of utilization of resources at the capacity constrained resource activities where, I j , [egs]1
C INV , Inventory cost incurred per aircraft during major overhaul process flow
C LDP , Liquidated damages penalty cost incurred for late delivery of aircraft
(L S , )j , Average number of aircrafts in the system, over a stated interval of time
Acronyms ,
AP Air pressurization
AHP Analytic hierarchy process
CFE Customer furnished equipment
CP Cabin pressurization
CSTI Company special technical instruction
CSI Company servicing instruction
EGR Engine ground run
GHE Ground handling equipment
IAF Indian Air Force
LRU Line replaceable unit
MCDM Multi-criteria decision making
MOD Modification
MSS Master servicing schedule
NDT Non-destructive Testing
OS Out station
SACL Standard aircraft check list
SECL Standard engine check list
SMH Standard man hour
1.Introduction
Periodic overhauling of aircraft system is imperative and essential for the normal operation of the system, since this ensures that the system will always operate at or below a predetermined failure value. Over time, the role of maintenance in the aircraft sector has become increasingly important. Concerning the high material value, complexity, operating conditions and the necessary safety in using the aircraft, all issues related to the aircraft maintenance are subject to very strict legislation of each country, and in the international air transport to international regulations (Rasuo and Duknic, 2013). This has equal concerns for both the civil...