Engine Analysis Using VAMOSC and

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Engine Analysis Using VAMOSC and Other Data
Sources
David Kelnberger May 01, 2008
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Using VAMOSC NAMSR in Conjunction with other
Sources to Develop Detail Engine Cost Metrics

• Tasked by the Propulsion and Power Competency AIR
  4.4.7 to develop a consistent and repeatable data
  analysis for a range of In-Service
  Type/Model/Series Engines.
• The goal is to develop and monitor a range of
  cost and performance metrics.
• Metrics will be along a range of performance
  standards
• Top Level /Engine Flight Hour for the whole
  population
• Individual cost per completion at Intermediate
  and Depot
• Detailed per engine performance through life
• Use as much data as is available to help explain
  past performance as a means to predict future
  behaviors.

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Data Sources

• VAMOSC NAMSR Maintenance Data
• VAMOSC NAMSR Material Data
• Industrial Performance Overview (IPO)
• AEMS/Deckplate from NALDA for AIMD/Depot Engine
  RFI Count
• AIRRS for Aircraft BUNO (Inventory Count)
• AIRRS for Aircraft Flight Hours (Customer
  Preference)
• Labor rates (developed internally by Air 4.2)

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NAMSR Maintenance Data Methodology

• Maintenance Data Universe Query
• Calendar Year/Month
• Type Equipment Code-Engine
• Type/Model/Series-Engine
• Type/Model-Engine
• Work Unit Code at the 2nd digit
• Action Org Code
• Serial Number-Engine
• O-level Labor Hours
• I-Level Labor Hours

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NAMSR Material Data Methodology

• Material Data Universe Query
• Calendar Year/Month
• Type Equipment Code-Engine
• Type/Model/Series-Engine
• Type/Model-Engine
• Work Unit Code at the 2nd digit
• Action Org Code
• Serial Number-Engine
• AVDLR Cost
• O-Level Consumable Cost
• I-Level Consumable Cost
• Total Consumable Cost

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Depot Data

• The depot portion of the engine cost metrics are
  provided by the
• IPO data base in the following elements
• TMS
• Repair site
• Type of repair, broken out by engine or module
• Engine serial
• Start/Completion date
• Financial FY
• Actual Cost of event

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Aircraft Engine Management Systems (AEMS)

• NALDA archive for detailed engine performance
• History for each serial numbered engine
• Date Installed, Date Removed
• Time on Wing
• Elapsed Engine Hours
• Removal Code
• Ready for Issue (RFI) at I and D
• Note AEMS is now a subset of Deckplate

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Aircraft Inventory Readiness and Reporting System
(AIRRS )

• AIRRS is a product of NAVAIR 6.0 Logistics
  Database utilizing the Naval Aviation Logistics
  Data Analysis (NALDA) Integrated Data
  Environment (IDE).
• Aircraft Inventory is supplied by AIRRS
• The inventory is the Active Aircraft
• Inventory total at the end of the fourth
  quarter of the FY is utilized.
• Aircraft Flight Hours is supplied by AIRRS by FY
• Engine flight hours are derived by multiplying
  Aircraft flight hours by the number of firewalls.

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For a whole engine query you would filter on the
WUC at the 2nd digit
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For a module you would expand the query to
include the 4th, 5th,, and 6th digit WUC element
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Data Sources and Level of Detail

• Using NAMSR the following level of detail is
  available
• AVDLR, Consumables, OI Maintenance Hours
• Per Year
• Per Month
• Per Action Org
• Per JCN Org
• Per Serial Number
• Per NIIN
• NAMSR Probably Captures 75 to 95 of the Data
• Industrial Performance Overview
• Depot Overhaul Events
• Per Year
• Per Event
• Per Serial Number
• IPO Should Capture Every Depot Event

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I-level Breakdown

• Intermediate Maintenance Activities (IMAs) by
  All or Individual
• Total AVDLR Costs
• Consumable Costs
• I-level labor hrs
• I-level labor Costs
• Total Costs

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Methodology

• All Queries are pulled for the whole engine at
  the 2 digit WUC (work unit code)
• Additionally some type/models require the engine
  be broken down to the module level. Some of
  these engines include the T400, T56, T700, F404,
  and F414.
• For queries at the module level the same elements
  are used with the addition of adding the 4th,
  5th, and 6th digit WUC element.
• It has been our experience that you need to run a
  query for each additional WUC . IE run (2,4),
  (2,5), (2,6) dont try to run (2,4,5,6) in one
  query.
• The data from the VAMOSC queries is downloaded as
  a CSV file and opened in either Excel or Access
  depending on the number of rows.

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J52 TREND ANALYSIS
The long term analysis of engine performance
requires understanding changes in both operating
environment, maintenance strategies and engine
upgrades.
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J52 Data Comparison
The count of engines peaked in 2001/2002 during
combat operations, but that is also concurrent
with conversion of engines from A to B series.
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J52 Data Interpretation
The number of engines worked at the AIMD is
fairly consistent, but you would have to know
that the engines have been converted to new
series with increased maintenance requirements.
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Engine Cost Metrics Can Be Misleading(J52)
Changes in program total cost are not easily
explained by any one metric. Cost per Aircraft
went up probably due to increased
utilization Cost per Engine Flight Hour went
down, probably due to increased utilization
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F414 Maintenance Support
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Products

• Current customer Engine metrics are based around
  using an MS (Maintenance Support) cost which
  is a roll-up of
• O-level labor costs
• I-Level labor costs
• AVDLR costs
• Consumable costs
• Depot costs
• For the Module metrics the MS cost roll-up is
  the same as the whole engine minus O-level labor
  costs.

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Next Steps for the Engine Project

• With the current VAMOSC data
• The analyses can drill down to the Action
  Organization and report the cost per month by
  Engine Serial Number for AVDLR, Consumables and
  Labor Hours
• The data can include
• BCM count
• NIIN/Part Number
• Maintenance Actions
• Removals
• A799 (No Fault Found)
• Scheduled/Unscheduled/Tech Directive
• This same process can be applied to each engine
  TMS
• The data should marry up with the more detailed
  analysis at the JCN level

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Questions?
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(Backup)Definition of the PIC

• P Planning Production Report System (PPRS)
  receives its depot financial data from the
  Defense Inter-service Financial Management System
  (DIFMS)
• I Industrial Performance Overview (IPO)
  contains depot financial (from PPRSDIFMS), TAT,
  and Maintenance Man-hours (the term Production
  Status Reporting (PSR) is the same as IPO data)
• C CHINO is the Funding Authority for all Depot
  events (CHINO for acft belongs to AIR-7.8 and
  for engines belongs to AIR-6.7.3.2)
• The PIC provides an actual cost combining both
  labor and material for Type/Engine/Serial Number
  per FY for the Depot cost Element.

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