Appendix X to Part 86—Sampling Plans for Selective Enforcement Auditing of Heavy-Duty Engines and Light-Duty Trucks

Table 1—Sampling Plan Code Letter

Annual sales	Code letter	50-99	A.	100-299	B.	300-499	C.	500 or greater	D.

Table 2—Sampling Plan for Code Letter “A”

[Sample inspection criteria]

Stage	Pass No.	Fail No.	Stage	Pass No.	Fail No.	1	( 1)	( 2)	16	6	11	2	( 1)	( 2)	17	7	12	3	( 1)	( 2)	18	7	12	4	0	( 2)	19	8	13	5	0	( 2)	20	8	13	6	1	6	21	9	14	7	1	7	22	10	14	8	2	7	23	10	15	9	2	8	24	11	15	10	3	8	25	11	16	11	3	8	26	12	16	12	4	9	27	12	17	13	5	10	28	13	17	14	5	10	29	14	17	15	6	11	30	16	17

1 Test sample passing not permitted at this stage.

2 Test sample failure not permitted at this stage.

Table 3—Sampling Plan for Code Letter “B”

[Sample Inspection Criteria]

Stage	Pass No.	Fail No.	1	( 1 )	( 2 )	2	( 1 )	( 2 )	3	( 1 )	( 2 )	4	( 1 )	( 2 )	5	0	( 2 )	6	1	6	7	1	7	8	2	7	9	2	8	10	3	8	11	3	9	12	4	9	13	4	10	14	5	10	15	5	11	16	6	12	17	6	12	18	7	13	19	8	13	20	8	14	21	9	14	22	9	15	23	10	15	24	10	16	25	11	16	26	11	17	27	12	17	28	12	18	29	13	18	30	13	19	31	14	19	32	14	20	33	15	20	34	16	21	35	16	21	36	17	22	37	17	22	38	18	22	39	18	22	40	21	22

1 Test sample passing not permitted at this stage.

2 Test sample failure not permitted at this stage.

Table 4—Sampling Plan for Code Letter “C”

[Sample Inspection Criteria]

Stage	Pass No.	Fail No.	1	[1]	[2]	2	[1]	[2]	3	[1]	[2]	4	[1]	[2]	5	0	[2]	6	0	6	7	1	7	8	2	7	9	2	8	10	3	9	11	3	9	12	4	10	13	4	10	14	5	11	15	5	11	16	6	12	17	6	12	18	7	13	19	7	13	20	8	14	21	8	14	22	9	15	23	10	15	24	10	16	25	11	16	26	11	17	27	12	17	28	12	18	29	13	18	30	13	19	31	14	19	32	14	20	33	15	20	34	15	21	35	16	21	36	16	22	37	17	22	38	18	23	39	18	23	40	19	24	41	19	24	42	20	25	43	20	25	44	21	26	45	21	27	46	22	27	47	22	27	48	23	27	49	23	27	50	26	27

1 Test sample passing not permitted at this stage.

2 Test sample failure not permitted at this stage.

Table 5—Sampling Plan for Code Letter “D”

[Sample Inspection Criteria]

Stage	Pass No.	Fail No.	1	( 1 )	( 2 )	2	( 1 )	( 2 )	3	( 1 )	( 2 )	4	( 1 )	( 2 )	5	0	( 2 )	6	0	6	7	1	7	8	2	8	9	2	8	10	3	9	11	3	9	12	4	10	13	4	10	14	5	11	15	5	11	16	6	12	17	6	12	18	7	13	19	7	13	20	8	14	21	8	14	22	9	15	23	9	15	24	10	16	25	11	16	26	11	17	27	12	17	28	12	18	29	13	19	30	13	19	31	14	20	32	14	20	33	15	21	34	15	21	35	16	22	36	16	22	37	17	23	38	17	23	39	18	24	40	18	24	41	19	25	42	19	26	43	20	26	44	21	27	45	21	27	46	22	28	47	22	28	48	23	29	49	23	29	50	24	30	51	24	30	52	25	31	53	25	31	54	26	32	55	26	32	56	27	33	57	27	33	58	28	33	59	28	33	60	32	33

1 Test sample passing not permitted at this stage.

2 Test sample failure not permitted at this stage.

[48 FR 1414, Jan. 12, 1983, as amended at 48 FR 52209, Nov. 16, 1983]