1、30 August 1990 SUPERSEDING MIL-M-5776B(USAF) 11 June 1965 MILITARY SPECIFICATION MAINTENANCE PLATFORM, AIRCRAFT ADJUSTABLE, 13 TO 20 FEET TYPE B-2 This specification is approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of the Department of D
2、efense. 1. SCOPE 1.1 This specification covers one type of aircraft maintenance platform designated Type B-2. 2, APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids of request for proposal, form a part of the specification to the extent specified he
3、rein. SPECIFICATION FEDERAL UU-T-81 MILITARY Tags, Shipping and Stock MIL-C- 104 MIL-P-116 Preservation, Methods of MIL-B-26195 Box, Wood-Cleated, Skidded, Load Bearing Base Crates; Wood, Lumber and Plywood Sheathed, Nailed and Bolted STANDARDS MILITARY MIL-STD-129 MIL-STD-130 Marking for Shipment a
4、nd Storage Identification Marking of US Military Property Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data which may improve this document should be sent to: Support Division, SA-ALC/MMDEM, Kelly AFB TX 78241 AMSC N/A FSC 1730 DISTRIBUTION STATEMENT A. A
5、pproved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1186 Cushioning, Anchoring, Bracing, Blocking, and MIL-STD-2073 Waterproofing; with Appropriate Test Methods DOD Material Procedures for De
6、velopment and Application of Packaing Requirements (Copies of specifications and standards required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer). * 2.1.2 Other Government documents, draw
7、ings, and publications. The following other Government documents form a part of this specification to the extent specified herein. AIR FORCE 48520090 Maintenance Platform, Aircraft, Adjustable, 13 to 20 Feet Type B-2 (Copies of specification, standards, drawings and publications required by supplier
8、s in connection with specific procurement functions shall be obtained from the procuring activity or as directed by the contracting officer.) * 2.2 Non-Government publications. The following document forms a part of this document to the extent specified herein. Unless otherwise specified, the issues
9、 of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS
10、(ASTM) ASTM-D-3951 Packaging, Commerical (Application for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia PA 19103). 3. REQUIREMENTS 3.1 The requirements specified in AF Drawing 48520090 are applicable as requirements
11、shall be as specified herein. 3.1.1 Where the requirements of the drawings and this specification conflict, the requirements of this specification shall govern. 3.2 Selection of specifications and standards. Specifications and standards for necessary commodities and services not specified herein sha
12、ll be selected in accordance with MIL-STD-143. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-577bC L7 9999906 Oq47255 E 3.2.1 Standards parts. AN or MIL Standard parts shall be used wherever they are suitable for the purpose, and shall be i
13、dentified by their part numbers. Commercial utility parts such as screws, bolts, nuts, cotter pins, et cetera, may be used, provided they have suitable properties and are replaceable by the AN or MIL Standard parts without alteration and provided the corresponding AN of MIL part numbers are referenc
14、ed on the drawings and in the parts lists. applications for which no suitable corresponding AN or MIL part is in effect on date of invitation for bids, commercial parts may be used provided they conform to all requirements of this specification. In 3.3 Design and construction. The maintenance platfo
15、rm shall be designed and constructed so that no parts will work loose in service. withstand the strains, jars, vibrations, and other conditions incident to shipping, storage installation, and service. It shall be built to 3.3.1 The maintenance platform shall be constructed so that adjustments and re
16、pairs can be easily made by the personnel of operation units and overhaul bases 3.4 Identification of product. Equipment, assemblies, and parts shall be marked for identification in accordance with MIL-STD-130. 3.5 Workmanship. The maintenance platform, including all parts and accessories, shall be
17、constructed and finished in a thoroughly workmanlike manner. marking of parts and assemblies, welding and brazing, painting, riveting, machine-screw assemblies, and freedom of parts from burrs and sharp edges. Particular attention shall be given to neatness and thoroughness of 4. QUALITY ASSURANCE P
18、ROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. the supplier may utilize his own facilities or any commercial laboratory accep- table to the
19、Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise specified, 4.2 Classification of tests. The inspection an
20、d testing of the platform shall be classified as acceptance tests. 4.3 Acceptance tests. Acceptance tests shall consist of: a. Individual tests. b. Sampling tests. 4.3.1 Individual tests. Each maintenance platform shall be subjected to the following test: 4.3.1 Examination of product. Each maintenan
21、ce platform shall be inspected to determine compliance with the requirements specified herein and the drawing with respect to materials, workmanship, and marking. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-v MIL-M-577bC 17 949990b 0947256 b E
22、4.3.2 Sampling tests. The first 3 maintenance platforms on the order, and one maintenance platform from each lot of 25 or fraction thereof on the order shall be selected at random and subjected to the following tests: 4.3.2.1 A lot shall consist of the maintenance platforms manufactured under essent
23、itally the same conditions, of the same material, and submitted for inspection at subsetantially the same time. 4.3.2.2 Rejection and retest. When one or more maintenance platforms form a lot fail to meet the specification, acceptance of all items in the lot shall be withheld until the extent and ca
24、use of failure have been determined. The contractor shall explain fully to the government representative the cause of failure and the action taken to preclude recurrence, the sampling tests shall be repeated. After correction all of 4.3.2.3 Individual test may continue. For production reasons, indiv
25、idual test or other sampling plans may be continued pending the investigation of a sampling test failure. But final acceptance of the entire lot or lots produced later (or items on hand or items produced later) shall not be made until it is determined that all items meet all the requirements of the
26、specification. 4.3.3 Defects in items already accepted. The investigation of a test failure could indicate that defects may exist in items already accepted. the contractor shall fully advise the procuring activity of all the defects likely to be found and the methods of correcting them. If so, 4.4 T
27、est methods. The maintenance platform shall be assembled completely and loaded with a static load of 1500 pounds, at or near the center of the plat- form. twice. through its entire range twice. There shall be no leakage of hydraulic fluid, elongation of bolt holes, or failure of welding, material, o
28、r workmanship. The maintenance platform shall then be operated through its entire range The load shall then be removed and the maintenance platform operated 4.4.1 With the load applied, as specified in 4.4 the maintenance platform shall be left at the 17 foot level for a period of one hour without t
29、he locking device in use. The rate of settling of the piston shall not exceed 0.02 inch per hour. 4.4.2 Each step of the maintenance platform shall be individually tested with a static load of 400 pounds at or near the center of the step. deflection of each step under the load shall not exceed 1/4 i
30、nch aiid there shall be no permanent deflection when the load is removed. The 4.5 Inspection of the preservation, packaging and marking for shipment and storage. Sample items of packs and the inspection of the preservation, packaging, packing and marking for shipment and storage shall be in accordan
31、ce with the requirements of section 5, or the documents specified therein. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-577bC 17 I 9999906 0447257 8 M * 5. PACKAGING 5.1 Preservation. Preservation shall be level A, C or Commercial as spe-
32、cified (see 6.2). 5.1.1 Disassembly and matchmarking. Disassembly shall be the minimum necessary to safeguard parts known to be subject to damage, loss or breakage in transit and to accomplish reduction in cube. Bolts, nuts, screws, pins, washers and other attaching parts removed shall be reinstalle
33、d in one of the mating parst and secured to prevent their loss. reassembly, parts removed and mating parts shall be matchmarked. Matchmarking shall be printed on shipping tags conforming to UU-T-81, Type A. tags shall be waterproofed in accordance with MIL-STD-129. When necessary to facilitate The p
34、rinted * 5.1.2 Level A. Preserve bare metal surfaces on the maintenance platform using P-2 preservatives in accordance with Method I of MIL-P-116. hydraulic lines to prevent contamination. assemblies with MIL-B-121 and secure. Cap all Wrap preserved areas and hydraulic * 5.1.3 Level C. The level C p
35、reservation for the maintenance platform shall conform to the requirements of MIL-STD-2073. * 5.1.4 Commercial. The commercial preservation of the maintenance platform shall be in according to ASTM-D-3951. * 5.2 Packing. Packing shall be level A, B, or Commerical, as specified (see 6.2). * 5.2.1 Lev
36、el A. The components of the maintenance platform shall be packed - in containers conforming to MIL-B-26195, Type II or MIL-C-104, Type II, Class 2, Style A. tainer specification. * 5.2.2 Level B. The component of the maintenance platform shall be packed in containers conforming to MIL-B-26195, Type
37、I or MIL-C-104, Type II, Class 2, Style A. specification. Closure and strapping shall be in accordance with applicable con- Closure and strapping shall be in accordance with applicable container * 5.2.3 Level C. The components of the maintenance platform shall be packed in containers conforming to M
38、IL-B-26195, Type I, or MIL-C-104, Type I, Style A. Closure and strapping shall be in accordance with applicable container specifications. * 5.2.4 Commercial. The preserved components of the maintenance platform shall be packed in accordance with the requirements of ASTM-D-3951. * 5.3 Marking. * 5.3.
39、1 Levels A, B and C. In addition to any special or other identification markings required by the contract (see 6.2) each unit pack, intermediate and exterior and unitized load shall be marked in accordance with MIL-STD-129. - Provided by IHSNot for ResaleNo reproduction or networking permitted witho
40、ut license from IHS-,-,-.c MIL-1-577bC 17 = 999990b 0447258 T lil 5.4 Physical protection. All cushioning, blocking, bracing and bolting shall be in accordance with MIL-STD-1186. 6. NOTES 6.1 Intended use. The Type B-2 maintenance platform covered by this speci- fication is intended to facilitate ma
41、intenance and inspection of inaccessible portions of heave aircraft. 6.2 Ordering data. Procurement documents should specify the following: a. Selection of applicable levels of preservation and packaging and packing (see section 5). 6.3 Subject terms (key word) listing. Aircraft maintenance platform Maintenance platform Platform Type B-2, Maintenance platform Work platform Custodian: Air Force - 99 Preparing activity: Air Force - 82 (Project 1730-F297) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
