---
title: "Operational suitability data (OSD) — EASA Definition · Avioverse"
description: "Article 1, Regulation (EU) No 748/2012: “operational suitability data (OSD)” means data, which is part of an aircraft type certificate, restricted type…"
url: "https://avioverse.aero/glossary/easa/operational-suitability-data"
---

# operational suitability data (OSD)

EASA defines “operational suitability data (OSD)” in one regulation. The wording below is reproduced verbatim from the EASA Easy Access Rules, with a link to the paragraph it comes from.

> “operational suitability data (OSD)” means data, which is part of an aircraft type certificate, restricted type certificate or supplemental type certificate, consisting of all of the following:
>
> (i) the minimum syllabus of pilot type rating training, including determination of type rating;
>
> (ii) the definition of scope of the aircraft validation source data to support the objective qualification of simulators or the provisional data to support their interim qualification;
>
> (iii) the minimum syllabus of maintenance certifying staff type rating training, including determination of type rating;
>
> (iv) determination of type or variant for cabin crew and type-specific data for cabin crew;
>
> (v) the master minimum equipment list.

Article 1 · Initial Airworthiness and Environmental Protection · Regulation (EU) No 748/2012 · Easy Access Rules, 27 Nov 2025 revision · [Read Article 1](https://avioverse.aero/regulations/easa/initial-airworthiness/cover-regulation/general#article-1)

## Defined in the same article

- [article](https://avioverse.aero/glossary/easa/article)
- [complex motor-powered aircraft](https://avioverse.aero/glossary/easa/complex-motor-powered-aircraft)
- [control and monitoring unit (CMU)](https://avioverse.aero/glossary/easa/control-and-monitoring-unit)
- [control and monitoring unit component](https://avioverse.aero/glossary/easa/control-and-monitoring-unit-component)
- [ELA1 aircraft](https://avioverse.aero/glossary/easa/ela1-aircraft)
- [ELA2 aircraft](https://avioverse.aero/glossary/easa/ela2-aircraft)
- [EPA](https://avioverse.aero/glossary/easa/epa)
- [ETSO](https://avioverse.aero/glossary/easa/etso)