MIL-DTL-48568D(OS)
delivery in the contract or order. The ballistic sample size shall be divided as equally as possible among
rocket motor batches and cartridge batches. From each rocket motor batch not represented in the sample
rocket catapult assemblies, one sample rocket motor shall be selected for static firing by the contractor (see
4.4.5.1) so that at least one rocket motor from each rocket motor batch has been static fired.
TABLE IV. Static firing sample size and temperature conditioning plan.
Lot size
Sample size
Sample size
Total firing
Acceptability
constant K1/
65 to 70 F
160 to 165 F
sample
Up to 40
3
3
6
--
41 to 65
4
4
8
--
66 to 110
5
5
10
--
111 to 180
7
7
14
--
181 to 300
10
10
20
--
301 to 340
11
11
22
1.41
341 to 380
12
12
24
1.43
381 to 420
13
13
26
1.45
1/
The acceptability constant (K) for a lot size up to 300 loaded units shall be derived in
accordance with MIL-STD-414 (see 4.4.5). K for a lot size between 301 and 420
shall be as indicated.
4.4.2.4 Sampling for nondestructive test. Each rocket catapult assembly shall be subjected to the tests
specified in 4.4.6.
4.4.3 Resubmission of rejected lot. A sample of rocket catapult assemblies shall be selected in accordance
with 4.4.2.3 and submitted when, with the prior approval of the contracting activity, the contractor requests
that the rejected lot be test fired under different conditions or the contractor believes a rejected lot may be
reworked to meet the requirements of this specification.
4.4.4 Examination.
4.4.4.1 Critical and major defects. Each rocket catapult assembly shall be examined for critical and major
defects in accordance with the applicable drawings, 3.5, 3.6, 3.7, 3.8, 3.9, 3.11, 3.12, and the sampling plan
of 4.4.2.2 a. Any rocket catapult assembly found to contain a critical or major defect shall be rejected.
4.4.4.2 Minor defects. Unless an alternative method is approved, the sample rocket catapult assemblies shall
be examined for minor defects in accordance with the applicable drawings, 3.10, 3.14, 3.15, and the sampling
plan of 4.4.2.2 b. If any rocket catapult assembly is found to contain a minor defect, the rocket catapult lot
shall be rejected. The lot may be resubmitted for examination of minor defects when all of the defective units
are removed from the lot or all of the defects are corrected.
4.4.4.3 Component examination. Unless an alternative method is approved, the rocket catapult components
shall be examined in accordance with the applicable drawings and the sampling plan of 4.4.2.2 c. Any
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