---
title: "obstacle clearance altitude — aviation glossary — OnlyPlanes"
description: "OCA stands for obstacle clearance altitude in FAA terminology."
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  "og:title": "obstacle clearance altitude — aviation glossary"
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Aviation abbreviation

# obstacle clearance altitude

OCA

ABBR · Navigation

At a glance

## Meaning of obstacle clearance altitude

OCA stands for obstacle clearance altitude in FAA terminology.

### More about obstacle clearance altitude

This abbreviation is used in air navigation. The English reference lists obstacle clearance altitude with the abbreviation OCA.

FAA abbreviations reflect US aviation usage. Their meaning and permitted use can differ in documents from other countries.

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