---
title: "Control Which Flights Appear on a Screen – Airport CX"
slug: "trip-windows-business-rules-air"
description: "A Flight Window filters and sorts the feed, setting when a flight rolls on and off each display."
updated: 2026-07-28T10:33:15Z
published: 2026-07-28T10:33:15Z
canonical: "docs.simpleway.cloud/trip-windows-business-rules-air"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.simpleway.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Trip WINDOWS & Business RULES

A **Trip / Flight Window** is the tool that decides *which flight records a screen cares about, when a flight appears, and when it clears*. It's not only the classic roll-on / roll-off rule — it does more than that.

### **Filtering a window**

A Window is a filtered, sorted view over the flight feed. Point a screen at a Window and it shows the record — or records — that pass the filter, in the order the Window sorts them. Change the filter and you change both what appears and how long it stays.

![](https://cdn.document360.io/a3e67867-6316-451b-94ad-ec727ac9102a/Images/Documentation/image-S8IAEYRA.png)

**Which flights it picks.** The core selectors decide which records qualify: direction (arrivals or departures), resource filter (all, or a specific gate or belt), and whether completed flights are included. For anything the standard fields can't express, an optional business rule — a small JavaScript filter — refines the set further (see below).

**When they roll on and off.** Timing is set as offsets around a flight's scheduled, estimated, or actual time, so a flight appears on screen a while before it's relevant and clears once it's done. This is the roll-on / roll-off behavior, and it's all configured in minutes.

You can also set how the result is **sorted**, which controls the order records appear in a FIDS list.

### **One record or a whole list — the same engine**

The same mechanism works whether a screen shows one flight or many. A gate screen uses a Window that yields a single record. A FIDS board uses a Window that yields — and sorts — many rows. Same tool, different output.

### **Boosting a Window with business rules**

The standard fields handle most filtering. When you need logic they can't express, you can extend a window with a **business rule** — a small piece of JavaScript that decides which records pass.

Business rules are a powerful feature that reaches across many parts of Airport CX. This chapter stays focused on one use for them: sharpening what a Trip / Flight Window shows. You define a business rule on its own tab, then assign it to the window by name through the business-rule field in the window configuration. The window then filters on conditions beyond the standard settings, while the rule stays reusable elsewhere.

![](https://cdn.document360.io/a3e67867-6316-451b-94ad-ec727ac9102a/Images/Documentation/image-PXW184IM.png)