1、MU-M-5777C 23 MARCH 1960 SUPERSEDING 27 MAY 1953 MIIi-M-5777B(ASG) MILITARY SPECIFICATION MAINTENANCE PLATFORM, AIRCRAFT, AD JUSTABLE, 3 TO 10 FEET, TYPE B-1 This specification has been approved by the Department of Defense and is man- datoyl for use bg the Depwtments of the Army, the Navy, and ths
2、Air Force. 1. SCOPE TT-P-664 - P r i m e r , Coating, Synthetic, R u s t - 1.1 This specification covers one type of Inhibiting, aircraft maintenance platform, designated Lacquer-Resisting. Type B-I. PPP-B-636 - Boxes, Fiber. 2. APPLICABLE DOCTJMENTS MILITARY 2.1 The documents, of the issue in effec
3、t on date of invitation for bids, form a part JAN-P-100 - Packaging and Pack- of this ,specification : .ing for Overseas Shipment, General SPECIFICATIONS Specification. FEDERAL MILP-1-16 - Preservation, Meth- ods of. QQ-$633 . - Steel Bars, Carbon, MILC-132 - Crate, Wood, 0.pen; Cold Finished and Ho
4、t Rolled, (Gen- Maximum Capacity eral Purpose). 2,500 Pounds. QQ-S-636 - Steel; Carbon (Low- MILT-3345 - Trailers, Semitrailers, and Trailer Dollies, Packaging of. Capbon) Sheets and Strips. QQ-T-830 - Tube, Steel, Carbon, M-ILP-8585 - Primer Coating, Zinc Mechanical, Round, C h r o mate, Low- Seaml
5、ess and M o is tu r e - Sen- Welded. sitivity. Licensed by Information Handling ServicesMIL-M-5777C 17 M 777770b 0385327 T MILM-5777C MIL-A-25175 - Air Transport, Non- tactical, Pack in g For. MILD-70327 - Drawings, Engineer- ing and Associated Lists. STANDARDS FEDERAL 596 - Colors, MILITARY MIL-STD
6、-129 - Marking f o r Ship- ment and Storage. MIL-STD-130 - Identification Mark- ing of U. S. Mili- tary Property. DRAWING . AIR FORCE 47R16420 - Maintenance Platform - Ahraft, Adjustable, 3 to 10 Ft, Tgpe B-l. PUBLICATIONS Am FORCE-AVY AERONAUTICAL BULLETIN 143 - Specifications and Standards; .Use o
7、f. AIR FORCE BULLETIN F49 - Codes for Ground Equipment in Finishing Schemes. (Copies of specifications, standards, drawings, and publications required by contractors in connec- tion with specific procurement functions should be obtained from the procuring activity or as directed by the contracting o
8、fficer.) 2.2 Other publications. The following doc- uments form a part of thi8 specification. Un- bless otheiwiise indicated, the iasues in effect on date of invitation for bids shall apply. a .;- - CONSOLIDATED .CLASSIFICATION COMMITTEE Uniform Freight Classification Rules. (Application for copies
9、of these freight classi- fication rules should be addressed to the Consolidated Classification Committee, 202 Chicago Union Sta- tion, Chicago 6, Illinois.) 3. REQUIREMENTS 3.1 Assembly drawing. !Che requirements of Drawing 4713116420 apply as requirements of this specification with rthe exceptions
10、and additions specified herein. When the draw- ing and this specification conflict, this spec- ification shall govern. 3.1.1 Exceptions to the requrements of Drawing 47R16420. 3.1.1.1 Commercial materals. Commercial materials of equivalent type are acceptable in lieu of materials conforming to QQ-S-
11、 633 and QQ-S-636. 3.1.1.2 Steel tubing. Where tubing con- forming to QQ-S-643 is specified, seamless, electric resistance welded, or fusion welded tubing conforming to QQ-Ta30 shall be used. 3.1.1.3 Finbh. The mairitenance platform shall be finished as specified on the draw- ing, except that the co
12、lor shall be gloss yel- low, color No, 113538 of Standard 895; Letter- ing and other marking applied to the equip- ment shall be gloss black, color No. 17038 of Standard 696. 3.1.1.3.1 Primer. Primer conforming to IT-P-664 may be applied cold in lieu of hot linseed oil or rust-preventive cumpound co
13、n- forming to Bulletin F49. 3.2 Selection of specifications and stand- ards. Specifications and standwds for-neces- sary commodities and services not specified herein shall be selected in accordance with Bulletin 143 except as specified in 3.2.1 and 3.2.2. - - . ._I Licensed by Information Handling
14、ServicesMIL-M-5777C 17 777770b 0185128 1 = /- 3.2.1 Commemial pu metal chips ; and other iforeign material removed during and after final assembly. 4. QUALITY ASSURANCE PROVISIONS 3 Licensed by Information Handling ServicesMIL-M-5777C 17 7777906 OLEL293T MILM-5777C 4.1 Unless otherwise specified her
15、ein, the supplier is responsible for the performance of all inspection requirements prior to sub- mission for Government inspection and ac- ceptance. Except as otherwise specified, the supplier may utilize his own facilif I ies or any commercial laboratory acceptable to the Government. Inspection re
16、cords of the ex- aminations and tests shall be kept complete and available to the Government as speci- fied in the contract or order. 4.2 Classification of tests, Tee inspection and testing of the maintenance platform shall be classified as acceptance tests. 4.3 Acceptance tests. The acceptance test
17、s Bhall consist of the following tests : (a) Indiv.idua1 test. (b) Sampling plan and tests. 4.3.1 Indiv%ual test. Each maintenance platform shall be subjected to the test spec- ified in 4.4.1. 4.3.2 Sampling plan and tests. Mainten- ance platforms shall be subjected to the fol- lowing tests until 10
18、 maintenance platforms in succession have been accepted. There- after, one maintenance platform selected at random from each thirty produced shall be assembled, loaded, and inspected until a maintenance platform is rejected, at which kirne the inspection sequence shall be re- peated. I (a) Platform
19、static load test (see 4.4.2). (b) Load holding test (see 4.4.3). (c) Step weight test (see 4.4.4). 4.3.2.1 Rejection and retest. When one maintenance platform selected from a pro- duction run fails to meet the specification, maintenance platforms still on hand or later produced shall not be accepted
20、 until the ex- tent and cause of failure are determined. 4.3.2.2 Individual tests may continue. For operational reasons, individual tests may be continued pending the .investigation of a sampling test failure. Final acceptance of maintenance platforms on hand or produced later shall not be made unti
21、l it is determined that the maintenance platforms meet all the requirements of the specification. 4.3.3 Defects in maintenance platforms already accepted. The investigation of a test failure could indicate that defects may exist in maintenance platforms already accepted. If so, the contraotor shall
22、fully advise the procuring activity of all defects likely to be found and methods of correcting them. 4.4 Test methods. 4.4.1 Examination of product. The main- tenance platform shall be inspected to de- termine compliance with the requirements specified herein and on the drawings with ;respect to ma
23、terials, workmanship, dimen- sions, finishes, and markings. The mainten- ance platform shall be inspected for opera- tion of controls and locking devices. 4.4.2 Platform static load test. The main- tenance platform shall be completely assem- bled and loaded with a static load of 1,500 pounds ak or n
24、ear the center of the plat- form. The maintenance platform shall then be operated through its entire range twice. The load shall then be removed and the maintenance platform operated through its entire range hice. There shall be no leak- age of hydraulic fluid, elongation of bolt- holes, or failures
25、 of welding, material, or workmanship as a result of this test. 4.4.3 Load holding test. With the load applied as specified in 4.4.2, the mainten- ance platform shall be left at the 7-fOOt level for 1 hour without the locking device in use. The rate of settling of the piston shall not exceed 0.02 in
26、ch per hour. Licensed by Information Handling ServicesMIL-fl-5777C 17 7799906 0185130 T / MILM-5777C 4.4.4 Step weight test. 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. The deflection of each step under load s
27、hall not exceed % inch, and there shall be no per.manent de- flection when the load is removed. 4.5 Inspection f the preservation, packag- ing, and packing. The inspection of the pre- servation, packaging, and paclring shall be in accordance with the instructions in section 5, or ;the specifications
28、 referenced ;therein. 5. PREPARATION FOR DELIVERY 5.1 Preservation and packaging. 51.1 Level A. The mahtenance platform shall be cleaned, dried and preserved in ac- corance with MILP-116. Bare corrosive surfaces shall be preserved method I. Sur- faces adequately protected by painting, plat- ing or p
29、hysical properties shall be protected by method III. The hydraulic system shall be preserved in accordance with the section of MIL-P-3345 applicable to hydraulic sys- to main- tain a minimum gross weight and cube. 5.2.2 Level B. Same as level A. 5.2.3 Levez C. Maintenance platforms shall be packed t
30、he minimum required by carrier pules and regulations to insure safe delivery to the initial receiving activity. Containers shall comply with Uniform Freight Classifi- cation Rules or other common carrier rdgula- tions applicable to the mode of transpocta- tion. 5.2.4 Air shipment$. Maintenance plat-
31、 forms shall be prepared for air shipment in accordance with MIL-A-25175. 5.3 Physical protection. All cushioning, blocking, bracing and bolting shall be in ac- cordance with JAN-P-100. The drop tests of JAN-P-100 shall be waived when pack- aging and packing of the item is for im- mediate use or whe
32、n the drop test of MIL P-116 M applicable. 5.4 Marking. All marking shall be in ac- cordance with MIGSTD-129. The shipment marking nomenclature shall be as follows: Maintenance Platform, Aircraft, Ad- justable, 3 to 10 Feet, Type B-l. 6. NOTES 6.1 Intended use. The Type B-I mainten- .ance piatfom co
33、vered by this specification is intended to facilitate maintenance and in- spection of heavy aircraft. 6.2 Ordering and the fact that the Govern- ment may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data, is not to be regarded by implication or other
34、wise as in any manner licensing the holder or any other person or corporation, or seil any patented invention that may in any way be related thereto. custodiaiEi: Army-Transportation Corps Navy-Bureau of Aercmautics Air Force Preparing activity: Air Force -d-. - ft U. C. GOVERNMENT PRINTING OFFICE: 621622-1960-(269) Licensed by Information Handling Services
