---
title: "RADAR CONTACT LOST — aviation glossary — OnlyPlanes"
description: "Used by ATC to inform a pilot that the surveillance data used to determine the aircraft's position is no longer being received, or is no longer reliable and radar service is no longer being provided."
canonical_url: "https://onlyplanes.ru/en/learn/radar-contact-lost"
locale: en
meta:
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  "og:description": "Used by ATC to inform a pilot that the surveillance data used to determine the aircraft's position is no longer being received, or is no longer reliable and radar service is no longer being provided."
  "og:image": "https://onlyplanes.ru/images/aviation/aircraft/boeing-787.webp"
  "og:title": "RADAR CONTACT LOST — aviation glossary"
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> Index of every page on this site: [llms.txt](https://onlyplanes.ru/llms.txt)

Radio communications and ATC

# RADAR CONTACT LOST

TERM · Radio communications and ATC

At a glance

## Meaning of RADAR CONTACT LOST

Used by ATC to inform a pilot that the surveillance data used to determine the aircraft's position is no longer being received, or is no longer reliable and radar service is no longer being provided.

### More about RADAR CONTACT LOST

Used by ATC to inform a pilot that the surveillance data used to determine the aircraft's position is no longer being received, or is no longer reliable and radar service is no longer being provided. The loss may be attributed to several factors including the aircraft merging with weather or ground clutter, the aircraft operating below radar line of sight coverage, the aircraft entering an area of poor radar return, failure of the aircraft's equipment, or failure of the surveillance equipment.

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