---
title: "PROPOSED BOUNDARY CROSSING TIME — aviation glossary — OnlyPlanes"
description: "Each center has a PBCT parameter for each internal airport."
canonical_url: "https://onlyplanes.ru/en/learn/proposed-boundary-crossing-time"
locale: en
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  "og:description": "Each center has a PBCT parameter for each internal airport."
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  "og:title": "PROPOSED BOUNDARY CROSSING TIME — aviation glossary"
---

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Operations

# PROPOSED BOUNDARY CROSSING TIME

PBCT

TERM · Operations

At a glance

## Meaning of PROPOSED BOUNDARY CROSSING TIME

Each center has a PBCT parameter for each internal airport.

### More about PROPOSED BOUNDARY CROSSING TIME

Each center has a PBCT parameter for each internal airport. Proposed internal flight plans are transmitted to the adjacent center if the flight time along the proposed route from the departure airport to the center boundary is less than or equal to the value of PBCT or if airport adaptation specifies transmission regardless of PBCT.

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