1、MIL-L-81174A W 0b 1970b55 458 1 INCH-POUND 1 MIL-L-81174A 20 August 1993 SUPERSEDING MI L-L-81174 ( 1 ) 9 MARCH 1984 MILITARY SPECIFICATION LIGHTS, LANDING, AIRCRAFT, RETRACTABLE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.
2、This specification covers the requirements for electrically retractable aircraft landing lights suitable for operation on 28VDC circuits and designed to use self-contained reflector type lamps having filament voltages up to 120 volts. 1.2 Classification. Electrically retractable aircraft landing 1 i
3、ghts suitable for oDeration on 28VDC circuits shall be classified as specified in the applicable specification sheet. e 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards and handbooks. The following specifications, standards, and handbooks form a part of this document
4、 to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, addi
5、tions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Air Warfare Center Aircraft Division Lakehurst, Systems Requirement Department , (Code SR3), Lakehurst, NJ 08733-5100, by using the self-addressed Standardization
6、 Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 6220 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. e Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
7、L-L-BL374A 999990b 3970b5b 394 MIL-L-81174A SPECIFICATIONS TT-E- 527 - Enamel , Al kyd , Luster1 ess , Low VOC Content TT- P- 1757 - Primer Coating, Zinc Chromate, Low- Moisture Sensitivity MI L ITARY MIL-W-5088 - Wi ring , Aerospace Vehicle MIL-C-5541 - Chemical Conversion Coatings on Aluminum and
8、Aluminum Alloys MIL-S-7742 - Screw Threads , Standard, Optimum Selected Series: General Specification for MIL-A-8625 - Anodic Coat i ngs , for Al uminum and Al umi num Al 1 oys MIL-L-81174/1 - Light, Landing, Aircraft, Retractable (PAR 64, 28 or 120 Volt Lamp) MIL-L-81174/2 - Light, Landing, Aircraf
9、t, Controllable MIL-L-81174/3 - Light, Landing, Aircraft, Retractable (PAR 46 Lamp) MIL-L-81174/4 - Light, Landing, Aircraft, Retractable STANDARDS MILITARY MIL-STD-129 - Marking for Shipment and Storage MIL-STD-130 - Identification Marking of U.S. Military Property MIL-STD-461 - Electromagnetic Emi
10、ssion and Susceptibility Requirements for the Control of Electromagnetic Interference MIL-STD-462 - El ec t romagnet i c Interference Characteristics, Measurement of MIL-STD-810 - Environmental Test Methods and Engineering Guide1 ines 1 c -2- Provided by IHSNot for ResaleNo reproduction or networkin
11、g permitted without license from IHS-,-,-MIL-L-81174A m 9999906 1970657 220 m MIL-L-81174A MIL-STD-838 - Lubrication of Military Equipment MIL-STD-889 - Dissimilar Metals MIL-STD-2073-1 - DOD Materiel Procedures for Development and Application of Packaging Requirements (Unless otherwise indicated, c
12、opies of federal and military specifications and standards are available from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 40, Philadelphia, PA 19111-5094.) this document and the references cited herein (except for re1 ated associated specifications sheets), the text of thi
13、s document takes precedence. Nothing 2.2 Order of precedence. In the event of a conflict between the text of in this document, however, supersedes appl icable specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual specified herein and in accordance with the ap
14、pl laws and regul at tem requ cable sp remen t s cificat ons unless a shall be as on sheet. In the event of any conflict between the requirements ofthis specification and the specification sheet, the latter shall govern. The following associated specification sheets provide design details for variou
15、s types and sizes of retractable and controllable aircraft landing lights: MTI -I -R1174/1 - Rotrartahlo PAR 64 larnnl 1 .I “ -“I ,.AL L VI* ., * U“. UIYIYIW MIL-L-81174/2 - Controllable (PAR 46 lamp) MIL-L-81174/3 - Retractable (PAR 46 lamp) MIL-i-81174/4 - Retractable (PAR 46 accuracy of dimension
16、s, radii of fillets, thoroughness of soldering, welding, brazing, painting, wiring, and riveting; alignment of parts and tightness of assembly fasteners. 3.12.1 Rivetinq. Riveting operations shall be carefully performed to ensure that the rivets are tight and satisfactorily headed. 3.12.2 Cleaninq.
17、The light shall be thoroughly cleaned, and loose, spattered, or excess solder, metal chips, and other foreign material removed during and after final assembly. 3.12.3 Soldering. Acid soldering flux shall not be used in the construction of the assemblies. 4. QUALITY ASSURANCE PROVISIONS 4.1 ResDonsib
18、ilitv for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use h
19、is own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed
20、requirements. The Government reserves the right to perform 4.1.1 Responsibility for comliance. All items shall meet all requirements of sections 3 and 5. specification shall become a part of the contractors overall inspection system or quality program. specification shall not relieve the contractor
21、of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements; however, this does no
22、t authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. The inspection set forth in this The absence of any inspection requirements in the 4.2 Classification of insDection. The inspection requirements specified h
23、erein are classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article inspection. When first article inspection is required (see 6.2), first article tests shall be performed on three (3) sample lights, unless otherwise specified. First
24、 article inspection shall consist of all -Y- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-LL74A 0b L97Obb4 460 D Sample no. 1 Surface examination Functional operation Low temperature High temperature Altitude Humidity Sand and dust Salt spra
25、y Expl os i on proof MIL-L-81174A Sample no. 2 Surface examination Functional operati on Electromagnetic interference Endurance examinations and tests of this specification under 4.6, and shall be performed in the order specified in Table I for each type of light assembly. 1 e inspect i on. Sample n
26、o. 3 Surface examination Functional operati on Vi bration Shock Accel erat i on 4.4 Quality conformance inspection. The quality conformance inspection shall consist of individual tests. 4.4.1 Individual tests. Each light shall be subjected to the following tests: a. Surface examination (see 4.6.1).
27、When specified by the acquring activity, dimensional inspection may be performed on a sampling basis rather than on each individual light assembly (see 6.2.i). b. Functional operation test (see 4.6.2). 4.5 Standard test conditions. Unless otherwise specified, the lights shall be subjected to tests u
28、nder the following conditions: Temperature 25“ including marking requirements (see 5.2). Type of lamp to be furnished with light when it is required (see 3.4.8). Note: Lights procured by Government Contractors and DOD Agencies and Departments for replacement spares are to be furnished without the la
29、mps. Items of data required (see 6.3). Sampling plan for quality conformance dimensional inspection, if applicable. 6.3 Consideration of data reauirements. The following data requirements should be condered when this specificationis applied on a contract. applicable Data Item Descriptions (DIDs) sho
30、uld be reviewed in conjunction with the specific acquisition to ensure that only essential data are requested/provided and that the DIDs are tailored to reflect the requirements of the specific acquisition. data requirements, a Contract Data Requirements List (DD Form 1423) must be The To ensure cor
31、rect contractual application of the -14- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-LL74A = 9999906 I1970669 T42 MIL-L-81174A 0 prepared to obtain the data, except where DOD FAR Supplement 27.475-1 exempts the requirement for a DD Form 142
32、3. Reference Paraqraph 4.3 DID Number DID Title Suqqested Tailoring DI-NDTI-80809A Test/inspection Use contractor reports format The above DIDs were those cleared as of the date of this specification. current issue of DOD 5010.12-L, Acquisition Management Systems and Data Requirements Control List (
33、AMSDL), must be researched to ensure that only current, cleared DIDS are cited on the DD Form 1423. The 6.4 First article. When first article inspection is required? the contracting officer should provide specific guidance to offerors whether item(s) should be a preproduction sample, a first article
34、 sample, a first production item, a sample selected from the first (specify quantity) production items, a standard production item from the contractors curren inventory, and the number of items to be tested as specified in 4.3. The he contracting officer should also include specific instructions in
35、acquisition documents regarding arrangements for examinations, approval of first article test results, and disposition of first articles. Invitations for bids should provide that the Government reserves the right to waive the requirement for samples for first article inspection to those bidders offe
36、ring a product which has been previously acquired or tested by the Government, and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approval is presently appropriate for the pending contract. Bidders should not
37、 submit alternate bids unless specifically requested to do so in the solicitation. 0 6.5 Subject term (keyword) listinq. Airplane 1 ighting Devices, illuminating Devices, lighting, airplane 6.6 Chanqes from previous issue. Marginal notations are not used in this revision to identify changes with res
38、pect to the previous issue due to the extensiveness of the changes. Custodians : Air Force - 99 Army - AV Preparing activity: (Project No. 6220-1046) Navy - AS Review activities: Air Force - 82 Navy - MC DLA- - GS O -15- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
