mil-std-1529

NIL-sTD-1529 (USAF)

24 Au,qust 1972

SUPERSEDING

ANA Bulletin 423a

18 April 1955

MILITARY STANDARD

VENDOR SUBSTANTIATION FOR AEROSPACE

PROPULSION SYSTEM ITEMS

FSC 284o

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mr,-wi.J-1529 (USAF)

24 August 1972

DEPARHWT OF TM AIR FORCE

Vendor Substantiation for Aerospace Propulsion System Items

NIL-STD-1529 (USAF)

1. This Military Standard has been approved for use by activities under

the cognizance of the Air Force effective as of date of issue.

2. Reconnnended corrections, additions, or deletions should be addressedto the 4950th Test Wing (TZSA) , Wright-Patterson Air Force Base,

Ohio 45433.

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FOREWORD

Aerospace propulsion system items must be produced

HIL-STD-1529 (uSAF)

24 August 1972.

to exceutionallv highstandards due to the critical function of the system. Initial qualificationestablishes the acceptability of the item qualified and the producer of the

specific item qualified. Over a period of time, new producers of items willbe needed for one reason or another. Steps must he taken to make certain thatsubsequent producers are qualified to produce the items. It is intended thatthe criteria provided herein will aid in the achievement of this goal.

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MIL-STD-1529 (USAF)

24 August 1972

cONTENTS

Paragraph

1.

1.11.2

2.

3.3.13.2

3.3

3.4

4.4.14.24.3

4.4

5.

SCOPE

ScopePurpose

REFERENCED DOCUKSNTS (Not applicable)

DEFINITIONS

Qualification testsVendor substantiation

Fabrication source

Vendor substantiation data

GENERAL REQUIREMENTSPrime contractor listResponsibility for control of testsReasons for conducting testsCost of substantiation testing

DETAIL REQUIREMENTS (Not applicable)

Page

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MIL-STD-1529 (USAF)

24 August 1972

VENDOR SUBSTANTIATION FOR AEROSPACEPROPULSION SYSTEM ITENS

1. SCOPE AND PURPOSE

1.1 - Initial qualification tests serve the dual purpose of establishingqualification approval of both the design of an aerospace propulsion system andthe fabrication sources of propulsion system items. However, such app~oval

aPPlies OnlY to those fab~ication sources whose items were represented in thespecific aerospace propulsion system which satisfactorily passed the qualificationtests. Substantiation tests have the single objecti”e of proving the abilityof an alternate source to process, fabricate, and manufacture aerospace propulsionsystem items which are at least equal in quality to those items on the latestor current production aerospace propulsion system.

1.2 Purpose. The purpose of this standard is to establish a requirement forand prescribe the procedure by which substantiation tests will be conducted foraerospace propulsion system items manufactured by fabrication sources notrepresented in the specific aerospace propulsion system “hich passed the aero -

s~ce propulsion system qualification tests.

2. REFEICtNCEDDOCUMENTS (Not applicable)

3. DEFINITIONS

3.1 Qualification tests. Qualification tests are those tests performed onaerospace propulsion systems and aerospace propulsion system items to determinequalification as a satisfactory product.

3.2 Vendor substantiation. Vendor tests are those tests performed o“ aerospacepropulsion system items and checks on rranuiaccurl”gcapability necessaryto establish satisfactory alternate fabrication sources. Substantiation testsinclude, but are “ot limited to, those tests required by applicable Governmentand aerospace propulsion system mwnufacturers$ specifications.

3.3 Fabrication source. The fabrication source is the prime physical sourcethat produces an aerospace propulsion system item. This so”=ce includes anyproducer, vendor, manufacturer, contractor , or subcont~actor who performsoperations or processes such as assembling, machining, forging, rolling, drawing,forming, casting, plating, heat treating, a“d manufacture of items. Changes offabrication location, such as to another plant of an individual supplier, shallbe construed as a change of fabrication source.


MIL-sTI)-1529 (USAF)

24 August 1972

3.4 Vendor substantiation data. Vendor substantiation data is informationthat describes all phases of the specific tests and production requirementswlitcb the prime aerospace propels{.on system nunulkcturcr dc.ignatcs asnecessary to qualify fabrication sour-ces.

4. GENERAL REQUIREMENTS

4.1 Prime contractor list. For each aerospace prop”l.sion system model, theprime aerospace propulsion system contractor shall maintain a current listingof system items and a corresponding listing of qualified fabrication sources.These listings shall be subject to the scrutiny of the local Government repre-sentative and the procuring activity to insure their completeness and adequacy.The specific substantiation test data required to qualify new fabrication sourcesfor these items shall be developed and shall be delivered on an as-requiredbasis for ““restricted use by the.Government.

4.2 Responsibility ?or control of tests. The prime responsibility for effectivecontrol of all fabrication sources and changes i“ these sources shall rest withthe prime aerospace propulsion syste~ contractor during the period of performancefox my contract which incorporates this document. The Government reserves theright to qualify alternate fabrication sources for spare psrts procurement or torequire tt,eprime aerospace prop”lsio,,system contractor to conduct specificsubstantiation tests when deemed to be in the best interest of the Government.The prime aerospace propulsion system contractor will.be advised of anyfabricator approved by the Government so that he will be able to maintain a listof qualified fabricator?. This will nob relieve the prime aerospace p~opulsionsystem contractor of his responsibility for the substantiation of otherproduct ion sources.

4.3 Reasons for conduc.ti”g tests, It is the intent of the Government to be surethat there is an adequate production base available to assxre the availabilityof parts of acceptable quality a“d to maintain a reasonably competitive atmosphere.Substantiation tests for additional fabricators shall be conducted providedsufficient funds and facilities are available when one or more of the rollowingoccurs:

a. Tbe current fabrication source(s) can not supply items in sufficientquantity Or in a timely manner to meet actual or projected requirements

b. Tbe qualification of additional fabrication sources will result in a netsavings to the Government

c. The quality of the item(s) being produced by the currently qualifiedfabricator(s) becomes marginal or falls below acceptable standards.

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NIL-STD-1529 (USAF)

24 August 1972

f:*4.4 Cost of substantiation testing. Substantiation testing can be veryexpensive and care must be exercised to assure that the cost of such testingbe held to a minimum consistent with the needs of a competent, viable, andreasonably competitive production base. Where possible and feasf.ble,substantiation tests should be run in conjunction with other tests , Only incases of extreme urgency should a substantiation test requiring the operationof an aerospace propulsion sy5tem be r“n solely to qualify a new fabricator.

Substantiation testing conducted solely at the request of a potential fabricatorwill be paid for by the potential fabricator. Since most substantiationtesting will be conducted in conjunction wit!, other tests , only a pro-rata

share as agreed to prior to the testing will be charged to the potentialfabricator.

5. DETAIL REQUIREI.fSNTS(Not applicable) .

Custodian:

Air Force - 11

Review Activities:

Air Force - 12, 16, 71, 82

Preparing activity:Aix Force - 11

Project No. 2840 -FO05

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OFFICIAL wslIIcss

AsD/4950/TzsWright-Patterson, AFIJ, OH 45433


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