Acceptable Data

Section 03: Certification & Approval Types

Definition

Technical data that, while not formally approved by the authority or a delegate, is recognized as an adequate basis for performing maintenance, preventive maintenance, and minor alterations. Acceptable data sources include AC 43.13-1B (Acceptable Methods, Techniques, and Practices), manufacturer's maintenance manuals, and industry-standard repair practices. Acceptable data may be used for work that does not require approved data (i.e., minor repairs and minor alterations).

Where This Shows Up

Acceptable data provides a practical pathway for routine maintenance work without requiring formal engineering approval for every action. However, it cannot be used as the sole basis for major repairs or major alterations, which require approved data.

Primary Sources

14 CFR § 43.13(b) — Performance rules: acceptable dataFAA

FAA provision allowing the use of acceptable methods, techniques, and practices for maintenance work.

FAA AC 43.13-1B — Acceptable Methods, Techniques, and Practices — Aircraft Inspection and RepairFAA

The primary FAA source of acceptable data for aircraft inspection and repair.

Related Terms

Approved Data14 CFR Part 43 — Maintenance, Preventive Maintenance, Rebuilding, and Alteration

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