Хорошев / ИЛП_материал_маг_02.15 / DEF STAN 00-60 / Issue 4 / Part 0 - Appendix F to Annex C - Data element dictionary

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APPENDIX F TO ANNEX C

UOC SYSTEM/EI LCN TYPE. An LCN-TYPE representing the system/end item having a UOC relationship.

UUT LCN TYPE. An LCN-TYPE of the Unit Under Test.

204 LOGISTIC SUPPORT ANALYSIS RECOMMENDATION 1 A F - CODE

A single-position code that indicates whether the support/test equipment is recommended as an LSA candidate.

A two-part sequence identifying the purchase/production lot quantity ranges to which the UM or UI price apply. The field is divided into two sub-fields for minimum and maximum lot size. The sub-fields ‘From’ and ‘To’, if limited to 5 digits each, and used in conjunction with Unit of Issue Price (DED 490), which itself equates to AECMA 2000M TEI UOI, will satisfy AECMA Price Break Data (TEI PBD).

The minimum Quantity of the item to which the UM/UI PRICE applies.

UI PRICE LOT QUANTITY FROM. The UI price minimum quantity. This equates to positions 1 to 5 of AECMA 2000M TEI PBD.

PBD 2 UI PRICE LOT QUANTITY FROM. The UI price minimum quantity equating to positions 26 to 30 of AECMA 2000M TEI PBD.

PBD 3 UI PRICE LOT QUANTITY FROM. The UI price minimum quantity equating to positions 51 to 55 of AECMA 2000M TEI PBD.

UM PRICE LOT QUANTITY FROM. The UM price minimum quantity.

The maximum Quantity of the item to which the UM/UI PRICE applies.

UI PRICE LOT QUANTITY TO. The UI price maximum quantity. This equates to positions 7 to 11 of AECMA 2000M TEI PBD.

PBD 2 UI PRICE LOT QUANTITY TO. The UI price maximum quantity. This equates to positions 32 to 36 of AECMA 2000M TEI PBD.

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PBD 3 UI PRICE LOT QUANTITY TO. The UI price maximum quantity. This equates to positions 57 to 61 of AECMA 2000M TEI PBD.

UM PRICE LOT QUANTITY TO. The UM price maximum quantity.

A code which indicates the required action to be taken at the expiration of the Maximum Allowable Operating Time (MAOT).

A narrative description identifying the broad, planned approach to be employed in sustaining the system/equipment at a defined level of readiness, or in a specified condition in support of the operational requirement. Initially stated by the Project for design and support planning purposes and is expanded by the contractor prepared inputs during full-scale development. Provides the basis for the maintenance plan. Usually includes guidelines pertaining to projected maintenance tasks, levels, and locations: organic/contractor maintenance work load mix; condition monitoring, fault isolation and testing approach; and, compatibility with existing support and test equipment, etc. May be influenced or modified as system/ equipment development proceeds.

Air Systems: Maintenance concept is detailed in terms of the depth of maintenance to be carried out at each line of maintenance as defined in AP100A-01 Lft 156 (eg, 1A/2B/3C) and AP100N-0140 (Naval Aircraft Maintenance Manual), and should include:

a.Interim Maintenance Concept, to be adopted during introduction to service, ie before Long Term Maintenance Policy is adopted.

b.Long Term Maintenance Concept, to be adopted once all the necessary long term logistic support is in place.

Sea Systems: This is defined in SSCP 40 Parts 1 and 2.

Land Systems: Maintenance practices and procedures are as laid down in DEF STAN 00-41 Part 6.

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The number of operational units (eg, rounds, Kilometres, hours) between preventive maintenance derived as an outcome of RCM analysis.

FAILURE MODE TASK MAINTENANCE INTERVAL. A maintenance interval associated with a task required to prevent or correct a Failure.

MAINTENANCE PROCEDURE MAINTENANCE INTERVAL. A maintenance interval associated with a maintenance procedure.

A number assigned by the government to identify an approved maintenance plan.

A narrative description of support data and analysis used in preparation of the maintenance plan. The impact of LSA including FMECA; RCM; and, Level Of Repair Analysis should be documented. In addition, the use of data from like and similar equipment and lessons learned in formation should also be identified.

The MRRI is defined as the peacetime replacement rate factor for the item indicating the number of expected failures, which will require removal and replacement of the support item below depot level in a given next higher assembly per equipment/end item per year. This factor is to be based on the known/estimated end item usage and mature failure rates.

The MRRI can be calculated using the following formula:

For an assembly:

N

MRR (assembly ) = å TFi× Quantityper taski

i =1

Where:

N= Number of ‘H’ function tasks for a given LCN/ALC combination (except ‘D’ O/M levels)

For a repair part:

N

MRR (repair part) = å TFi× Quantityper taski

i =1

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Where:

N= Number of ‘J’ function tasks performed against the next higher assembly of the repair part

Option l. The MRRII is the replacement rate of the item calculated as follows:

MRRII = MRRI × Annual Operating Pr ogramme Wartime

Annual Operating Pr ogramme Peacetime

When this computation results in zero, use the following definition:

The MRRII is the replacement rate of the line item per wartime operating programme. The wartime operating programme will be provided by the Project. The MRRII will consider secondary failures, idleness, operator error, preventive/planned maintenance, handling and storage.

Option 2. The MRRII is the wartime replacement rate for the item indicating the number of expected failures, which will require removal and replacement of the support item below depot level in a given next higher assembly per equipment/end item per year. This factor is to be based on the known/estimated end item usage and will include consideration of intensified rate of usage; increased stress due to combat operations; accident rate; ballistic damages; and, differences in turnround time.

A series of codes used to modify (multiply) the MRR for environmental conditions by area of system/equipment deployment. Consists of seven sub-fields. The first six subfields identify the multiplier to use for the following geographic areas: Arctic (R), Europe (E), Far East (F), Middle East (M) South Atlantic (Y), Other (As specified by Project) (O), respectively.

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The seventh sub-field is a code to indicate if the item is subject to a wearout failure pattern, in which case it is coded ‘W’.

The percentage of a repairable item expected to be removed/ repaired and returned to stock by a specified maintenance level. The field is divided into sub-fields by maintenance level (for definitions of the Operations/Maintenance Levels, see DED 277).

The sum of sub-fields a, b and c equate to AECMA 2000M TEI MAP.

The sum of sub-fields f and g equate to AECMA 2000M TEI SRA.

Land Systems note:

If Second Line 'Close Support' or 'General Support' is not specified, sub-field b. should be used. Sub-field d. (SRA) may be used, when necessary, to indicate MTD at ‘strategic 3rd line repair facilities’.

The ratio of maintenance man-hours expended to the operating interval (as defined by the measurement base) of the system/equipment. The item contains two components:

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Total maintenance man-hours expended for corrective maintenance divided by the total operating hours.

A code entered by the government that directs contractor action on a general management/milestone plan.

The name or official abbreviation of the organization which has the in-service repair management of the support/test equipment or training material.

A narrative description identifying the chemical compound or mechanical mixture properties of which the item is fabricated.

221 MAXIMUM ALLOWABLE OPERATING TIME (MAOT) 4 X - -

The expressed period of time after which certain items will be maintained in accordance with the Maintenance Action Code. The MAOT is composed of the following:

a.First two-positions. Number of applicable programme units; ie, 0l-99.

b.Third-position. Appropriate multiplier code.

c.Fourth-Position. Code to designate the programme units.

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The maximum corrective maintenance downtime within which a specified percent (normally 90 or 95 percent) of all corrective maintenance actions can be accomplished.

MAINTENANCE LEVEL MAXIMUM TIME TO REPAIR. An MAXTTR for a specified O/M level.

REQUIRED MAXIMUM TIME TO REPAIR. An MAXTTR specified as a supportability requirement/specification.

223 MEAN ACTIVE MAINTENANCE DOWNTIME (MAMDT) 6 N R 1

The statistical mean of the individual elapsed times for all maintenance tasks during a specified period of time (clock hours). The MAMDT, or M, is the weighted average of the mean time to repair (MTTR), and mean preventive maintenance action time (MTPM). When the number of corrective maintenance actions, (NC) and the number of preventive maintenance actions (NP) have been determined for a common reference time, the following formula may be used to calculate MAMDT:

M = MAMDT = (MTTR × NC) + (MTPM × NP)

NC + NP

MAMDT is documented as both technical and operational characteristics. Technical parameters reflect the technical reliability that the system/equipment shall demonstrate. In determining these parameter values, all failures and resultant actions to restore the item (eg, a broken tail light is a technical, but not operational characteristic). Operational parameters reflect operational reliability and maintainability characteristics that the system shall demonstrate. Only operational mission failures and the resultant tasks are included (eg, engine failure will result in mission abort which is both an operational and technical failure).

The average time expended, regardless of the number of personnel working simultaneously, required to perform a task. This does not include logistics delay time. The time can be predicted or measured, or can be specified as requirements as depicted below:

a.Predicted - The estimated time required in the performance of a task expressed in hours and hundredths.

b.Measured - The actual clock time recorded in the completion of a task from start to finish, expressed in hours and hundredths. Measured mean elapsed times are

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calculated by summing mean minute elapsed times for all subtasks. The following formula is used to calculated measured mean elapsed time:

The average number of man-hours required to perform a unit of work. The man-hours can be predicted or measured as defined below, or can be specified as requirements as depicted below:

a.Predicted - The estimated time required in the performance of a task expressed in hours and hundredths.

b.Measured - The actual total clock time recorded in the performance of a task expressed in hours and hundredths. Measured mean man-hours are calculated only if mean man-minute per person identifier are entered for the given task. The following formula is used to calculate Measured Mean Man-Hours (MMMH) for a given task:

The mean man-minutes required for each person identified to perform a step within a task expressed in minutes and tenths.

The mean minute elapsed time required for each subtask, expressed in minutes and tenths, regardless of the number of personnel working simultaneously. This does not include logistic delay time.

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The average length of a mission for an item.

This equates to AECMA 2000M TEI TBF although it shall be limited to 6 digits. Used in conjunction with Measurement Base (DED 238), this satisfies the requirements of AECMA 2000M TEI MTI.

For a particular interval, the total functional life of a population of an item divided by the total number of failures within the population during the measurement interval. The definition holds for time, rounds, miles, events, or other measure of life units.

MTBF is documented as both technical and operational characteristics. Technical parameters reflect the technical reliability that the system/equipment shall demonstrate. In determining these parameter values, all failures and resultant actions to restore the item (eg, a broken tail light is a technical, but not operational characteristic). Operational parameters reflect operational reliability and maintainability characteristics that the system shall demonstrate. Only operational mission failures and the resultant tasks are included (eg, engine failure will result in mission abort which is both an operational and technical failure).

REQUIRED MEAN TIME BETWEEN FAILURES. An MTBF representing the supportability requirement/specification MTBF.

SUPPORT EQUIPMENT MTBF - An MTBF of the support equipment.

The mean of the distribution of the time intervals between actions or groups of actions required to restore an item to, or maintain it in, a specified condition. This entry will be composed of the MTBF, Mean Time Between Maintenance Induced (MTBMINDUCED), Mean Time Between Maintenance No fault (MTBM-NO-FAULT), and Mean Time Between Preventive Maintenance (MTBPM) values (see DED 229, DED 231, DED 233, and DED 234). MTBMA may be calculated by the following formula:

MTBMA is documented as both technical and operational characteristics. Technical parameters reflect the technical reliability that the system/equipment shall demonstrate. In determining these parameter values, all failures and resultant actions to restore the item (eg, a broken tail light is a technical, but not operational characteristic).

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Operational parameters reflect operational reliability and maintainability characteristics that the system shall demonstrate. Only operational mission failures and the resultant tasks are included (eg, engine failure will result in mission abort which is both an operational and technical failure).

REQUIRED MEAN TIME BETWEEN MAINTENANCE ACTIONS. A MTBMA representing the supportability requirement/specification MTBMA.

SUPPORT EQUIPMENT MTBMA. A MTBMA of the support equipment.

One of four categories of maintenance events contributing to the Mean Time Between Maintenance Actions (MTBMA) value (see DED 230). Induced malfunctions are those induced in the system/equipment under analysis from external sources (ie, other equipment, personnel, etc.).

The average time (or other measurement base) between onequipment maintenance events that are classified as inherent malfunctions, ie, those malfunctions that are assumed to result from internal design/ manufacturing defects. Engineering failure analyses are not performed to verify validity of this assumed (and reported) classification. Note: MTBM INHERENT is not the same as MTBF. MTBM INHERENT is derived from maintenance records which are automatically processed and categorized into types of maintenance actions/events. Failures are generally only a subset of all the events that are categorized as inherent maintenance events. The relationship between MTBM INHERENT and MTBF may be calculated by the following formula:

MTBM INHERENT = MTBF (100 − IMF)

One of the four categories of maintenance events contributing to the Mean Time Between Maintenance Actions (MTBMA) value (see DED 230). These events consist of removals, replacements, and reinstallations of equipment due to erroneous failure indication. The MTBM NO FAULT shall be developed by using historical data and field feedback information from similar items to establish the number of maintenance events that are the result of erroneous failure indication. An alternative procedure approved by the Project may be used in lieu of the above procedure.

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