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|  MIL-F-81526B(AS)
3. 4.2 Tensile Strength - The Film - Tape shall have a tensile strength of
at least 17, 000 pounds per square inch in the lengthwise direction when
tested in accordance with Federal Standard 406, Method 1013.
3. 4.3 Brittleness - When tested in accordance with Federal Standard 170,
Method C (vice), the average spacing of the parallel planes for the first
failure shall not be greater than O. 15 inch for either dimension of the Film-
Tape.
I
3. 4.4 Base Light Transmission - The minimum base light transmission of
transparent areas of production copy film tapes shall be 60 percent, as
determined by the method specified in paragraph 4.3.2.1.
3. 4.5 Total Density - Total density, defined as the sum of the silver de-
posit density and the base density, shall be 4.20 or more for the Film-Tape,
as mess ured on a standard densitometer.
3. 4.6 Splices - No splices shall be permitted in the Production Copy Film-
Tapes.
3. 4.7 BIT Programmer Film-Tapes - The format and content on the Film-
Tape shall conform to the appropriate Master Film specified in Westing-
See Figure 2 for typical frame layout.
house drawing 580R479.
3. 4.8 FIM Film-Tapes - The format and content on the Film-Tape shall
conform to the appropriate Master Film specified in Westinghouse drawing
See Figure 3 for typical frame layout.
580R597.
3. 4.9 Identification and Markings - Each Film-Tape, Film- Tape container,
and packing carton shall be identified by the manufacturer`s part numbers
name, and registered trade mark or federal supply code (NAVAIR code
numbers) as shown in Figure 4.
3. 4.9.1 Code Number - A publications code number shall appear in the
The code number shall be as specified by
title block of each Film-Tape.
Naval Air Technical Services Facility (NATSF) and shall be accompanied by
.
a date.
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