(b) There are four basic functions which are performed by primary inspection agencies:

1. (1) Approval of the manufacturer's manufactured home design to assure that it is in compliance with the standard;
2. (2) Approval of the manufacturer's quality control program to assure that it is compatible with the design;
3. (3) Approval of the manufacturer's plant facility and manufacturing process to assure that the manufacturer can perform its approved quality control program and can produce manufactured homes in conformance with its approved design, and
4. (4) Performance of ongoing inspections of the manufacturing process in each manufacturing plant to assure that the manufacturer is continuing to perform its approved quality control program and, with respect to those aspects of manufactured homes inspected, is continuing to produce manufactured homes in performance with its approved designs and in conformance with the standards (see § 3282.362(c)(1)).

(c) There are two types of primary inspection agencies which perform these functions:

1. (1) Those which approve designs and quality control programs (Design Approval Primary Inspection Agencies—DAPIAs) and
2. (2) Those which approve plants and perform ongoing inspections in the manufacturing plants (Production Inspection Primary Inspection Agencies—IPIAs).