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# What Is Certificate of Airworthiness in Aircraft Maintenance?
- URL: https://www.acmiworld.com/what-is-certificate-of-airworthiness-in-aviation/
- Published: 2026-09-16T12:41:11.000Z
- Updated: 2026-09-16T12:41:10.000Z
- Description: Certificate of Airworthiness defined for aviation professionals, with its operational or commercial use, document context and related terminology.
- Author: ACMI World
- Tags: Aviation Glossary, Airworthiness & Maintenance, #Import 2026-09-14 15:41

## Technical Meaning and Practical Use

A Certificate of Airworthiness is an authority-issued document confirming that an aircraft conforms to an approved type design and is considered airworthy when maintained and operated under applicable rules.

Aviation Glossary

**Term:** Certificate of Airworthiness

**Category:** Airworthiness & Maintenance

## How It Is Used

The certificate does not remove the operator's continuing responsibility to keep the aircraft in an airworthy condition.

## Where It Sits in Continuing Airworthiness

Certificate of Airworthiness forms part of the technical framework used to establish, maintain or document aircraft airworthiness. Applicability depends on aircraft type, authority, approved maintenance data and the operator's maintenance programme.

## Records and Transaction Impact

Technical status must be supported by current records. Buyers, lessors, lenders and MRO organizations normally verify the applicable document, revision, compliance status and remaining maintenance exposure rather than relying on a description alone.

## Related Aviation Topics

Related ACMI World coverage includes [aircraft maintenance reserves](https://www.acmiworld.com/aircraft-maintenance-reserves-explained-what-airlines-and-lessors-actually-fight-about/), [aircraft redelivery conditions](https://www.acmiworld.com/aircraft-redelivery-conditions-explained-the-hidden-economics-at-lease-end/), [pre-purchase inspection findings](https://www.acmiworld.com/prepurchase-inspection-findings-affect-financing/), [aircraft records and resale value](https://www.acmiworld.com/aircraft-records-affect-resale-value/) and [business jet MRO providers](https://www.acmiworld.com/top-10-business-jet-mro-providers-europe/).

The certificate does not remove the operator's continuing responsibility to keep the aircraft in an airworthy condition.

Frequently Asked Questions

## Certificate of Airworthiness FAQ

What does Certificate of Airworthiness mean in aviation?

A Certificate of Airworthiness is an authority-issued document confirming that an aircraft conforms to an approved type design and is considered airworthy when maintained and operated under applicable rules.

Why does Certificate of Airworthiness matter?

The certificate does not remove the operator's continuing responsibility to keep the aircraft in an airworthy condition.

Where would an aviation professional encounter Certificate of Airworthiness?

It is commonly encountered in airworthiness & maintenance documents, procedures, calculations or operating discussions where the underlying technical or commercial issue is relevant.

Can technical status be accepted without supporting records?

Normally no. Airworthiness and asset-value conclusions depend on records showing applicability, compliance, release status, accumulated life and maintenance history.