# AC 21-303.1A: Certification Procedures for Products and Parts

- Type: Advisory circular (guidance, not mandatory unless a rule or AD requires it)
- Status: Historical
- Approved: August 10, 1972
- Family: AC 21-303
- Pages: 10
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A5D2EC6953AD782986257E0B0069C662.0001
- Page: https://openairdocs.org/ac/21-303

## Versions

- AC 21-303.1A (Historical), approved Aug 10, 1972

## Text

---
From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.