E, herein after referred to as the igniter.

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MIL-DTL-85547C (OS)

4.3 First article inspection. First article inspection shall be performed on sample units which have been

produced using the same materials equipment, processes, and procedures normally used in production.

4.3.1 Sample. First article sample shall consist of 36 igniters (see 6.4).

4.3.2 Inspection routine. The igniters shall be divided into three equal groups and subjected to the tests

specified in figure 1. The sequence of tests shall be as shown in figure 1.

4.3.3 Failure. Failure of any igniter shall be cause for rejection of the first article sample.

4.4 Quality conformance inspection. Quality conformance inspection shall consist of the tests in 4.5.1,

4.5.2 and 4.5.6 in sequence.

4.4.1 Inspection lot. Igniter inspection lot definition, formation, and size shall be in accordance with

ANSI/ASQ Z1.4. In addition, an inspection lot of igniters shall consist of assemblies meeting the

following conditions:

a. All primers in an igniter inspection lot shall come from a single primer inspection lot

b. All ignition grains in an Igniter lot shall come from a single ignition-grain inspection lot.

c. Lot size shall be not greater than 20,000 igniters

4.4.2 Lot numbering. Unless otherwise specified (see 6.2), lot numbering shall be in accordance with

MIL-STD-1168. Lot interfix numbers shall be assigned by the acquiring activity.

4.4.3 Sampling plan. Sampling for visual, radiographic and first article static-fire inspections shall be in

accordance with ANSI/ASQ Z1.4, inspection level 1.

4.4.4 Classification of characteristics. The characteristics verified by the tests and examinations herein

are classified as critical, major, or minor in accordance with DOD-STD-2101. Requirements that are

critical are identified by the symbol (C) and those that are major are identified by the symbol (M). The

number following the classification symbol indicates the serial number of the requirement. Requirements

not annotated with a classification code are classified minor.

4.5 Methods of inspection.

4.5.1 Radiographic. The igniter shall be radiographically inspected perpendicular to its longitudinal axis

in accordance with ASTM E 1742.

4.5.2 Visual examination. Igniters shall be visually examined for conformance to the requirements of 3.2

and 3.8. Four power (4X) magnification may be used for this inspection.

4.5.3 Detail strip. The igniters shall be disassembled and each component examined for conformance to

the requirements of 3.2.