MIL-DTL-5904E
3.11 Workmanship.
3.11.1 General. All details of workmanship and finish shall be in accordance with the
best practice for high quality runway marker lights consistent with the requirements of this
specification. Particular attention shall be given to cleanness of appearance and preciseness
exhibited in soldering, wiring, marking of parts and assemblies, welding and brazing, painting,
riveting, machine-screw assemblies, and freedom of parts from having any burrs and sharp
edges.
3.11.2 Dimensions and tolerances. Dimensions and tolerances shall be as specified.
Where dimensions and tolerances may affect the interchangeability, operation, or performance of
the light, the dimensions and tolerances depicted shall be held or limited accordingly.
3.11.3 Screw assemblies. Assembly screws and bolts shall be tight. The word "tight"
means that the screw or bolt cannot be appreciable tightened further without damage or injury to
the screw, bolt or threads.
3.11.4 Riveting. Riveting operations shall be carefully performed to insure that the
rivets are tight and satisfactorily headed.
3.11.5 Cleaning The light shall be thoroughly cleaned of loose, spattered, or excess
solder, metal chips, and any other foreign material, after final assembly. Burrs and sharp edges,
as well as resin flash that may crumble, shall be removed.
3.12 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible,
provided that the material meets or exceeds the operational and maintenance requirements, and
promotes economically advantageous life cycle costs.
4. VERIFICATION
4.1 Classification of tests. The testing requirements of the light shall be classified as
follows:
a. First article testing (see 4.2).
b. Acceptance testing (see 4.3).
4.2 First article testing.
4.2.1 First article test samples. The first article test samples shall consist of one
complete white light, two 180° red filters, two 180° green filters, and engineering data describing
optical performance tests to be performed (see 6.3). They shall be tested at a laboratory
designated by the procuring activity or, when so stated in the contract at the contractor's plant
under the supervision of the procuring activity.
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