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21-9B - Manufacturers Reporting Failures, Malfunctions, or Defects

Date Issued
August 12, 2010
Responsible Office
AIR-200,  Aircraft Certification Service - Production & Airworthiness Certification Division

This advisory circular (AC) provides information about Title 14, Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products, Articles and Parts (part 21). The AC covers § 2 t.3, Reporting of failures, malfunctions, and defects. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to comply with the requirements to assist manufacturers of aeronautical products and articles in reporting to the Federal Aviation Administration (FAA) any defect in any product or article they manufacture. However, if you use the means described in the AC, you must follow it in all-important respects.