LOGISTIC SUPPORT ANALYSIS
LSA is the selective application of scientific and engineering effort required during product procurement to achieve Supportability objectives, and accurate Life Cycle Costs.
It is used to record Logistic Information in a relational database. Once the LSA database is established, it may be used to record Through Life Changes in terms of Configuration for:
Health Usage Monitoring.
Reliability, Availability, Maintainability (RAM) data.
Task Analysis data.
Packaging and Provisioning data.
The majority of this data is focused around three areas. These are:
RAM data - Analysis conducted by the R & M department, through Failure Modes and Effects and Criticality analysis (FMECA): Failure Rates and Failure Mode Ratios and Criticality.
Task Analysis Data - Maintenance tasks are created to identify both Corrective (unscheduled) and Preventive (scheduled) maintenance tasks.
Parts information - Used to document packaging/provisioning data requirements. Design change and Configuration information.
Will provide a description of the function of each item within a system of the End Item. This Information is not part of the Technical Publication and will come from:
FMECA information from Reliability and Maintainability Analysis.
MSG-3/RCM (Reliability Centred Maintenance) - Analytical process used to determine Preventive maintenance requirements for components that are considered Maintenance Significant. These can come from Engineering, Vendor and System Safety.
Level Of Repair Analysis (LORA) - A narrative description of the support data and analysis used in the preparation of the maintenance plan. LORA analysis will identify the corrective maintenance task requirement.
Task data will be documented for all corrective, preventive and support tasks. The information within these tasks will identify all, or some, of the following:
Sequential subtask descriptions.
Manpower skill level requirements.
Support equipment (Tools) requirement.
Provisioned items (spares) consumed in the task.
Measured and Predicted Mean Elapsed Times.
Measured and Predicted Mean Man Hours.
A calculated frequency of occurrence (Task Frequency) of the maintenance task under analysis.
Packaging and Provisioning
All data relating to procedures, resources, processes, and design considerations are entered in the LSA Record (LSAR). The amount of data that ca be scoped is too exhaustive to show here. From the Provisioning data the Illustrated Parts Catalogue (IPC) is created for the Technical Publications. The main information covers the following, and is always required:
Item Identification - Part data includes Reference Number, Codified Item Name, NATO Stock Number (NSN) and Commercial And Government Entity (CAGE) code.
Additional Reference Numbers (ARN) - ARNs that may be used to identify items of supply.
Packaging Requirements - Packaging weights, sizes and their Units of Measure (UOM).
Part Application Provisioning - This will show technical information that relates to the parts that have been entered during item identification. For example: How the part is sourced, maintained and recovered. Part dimensions. Shelf Life, Item Category Code (ICC) and much more.
Reference Designation - Identifies unique references for each part provisioned for part recognition within the database.
Parts Manual Description - Contains parts Manual data associated with a provisioned item: Technical Manual Code, Figure Number, and Item Number.
Provisioning System/End Item Usable On Code (UOC) - Used to assign parts to the applicable UOC associated with an application.
Design Change Information - This will identify information about the parts that have been affected by a design change (modification).
Logistic Support Analysis
To summarise, the amount of logistic information that can be documented within the LSAR ls vast. To be used effectively careful consideration must be used when determining what is required. It is prudent to have a LSA/LSAR guidance conference to ensure that the performing activity and the requiring authority (customer) have an agreed and firm understanding what is required.