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# What Is Airworthiness Limitations Section in Aircraft Maintenance?
- URL: https://www.acmiworld.com/what-is-airworthiness-limitations-section-in-aviation/
- Published: 2026-09-16T12:41:04.000Z
- Updated: 2026-09-16T12:41:04.000Z
- Description: Airworthiness Limitations Section 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

## Definition, Documents and Application

The Airworthiness Limitations Section, or ALS, contains mandatory maintenance and life limitations that form part of the approved type design or continuing-airworthiness requirements.

Aviation Glossary

**Term:** Airworthiness Limitations Section

**Category:** Airworthiness & Maintenance

## Where It Sits in Continuing Airworthiness

Airworthiness Limitations Section 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.

## How It Is Used

Tasks and limits in the ALS cannot be treated as optional reliability recommendations.

## 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/).

Tasks and limits in the ALS cannot be treated as optional reliability recommendations.

Frequently Asked Questions

## Airworthiness Limitations Section FAQ

What does Airworthiness Limitations Section mean in aviation?

The Airworthiness Limitations Section, or ALS, contains mandatory maintenance and life limitations that form part of the approved type design or continuing-airworthiness requirements.

Why does Airworthiness Limitations Section matter?

Tasks and limits in the ALS cannot be treated as optional reliability recommendations.

Where would an aviation professional encounter Airworthiness Limitations Section?

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.