---
layout: wiki
title: FCS (Fire Control System)
description:
group: feature
parent: wiki
---
## 1. Overview
### 1.1 Fire control system
Offers a custom fire control system for tanks and helicopters. It enables engaging stationary and moving targets.
### 1.2 Manual lasing targets
Changes the default rangefinders, including those in vehicles, to require manual lasing.
### 1.3 Air burst ammunition
Anti air cannons can now use airburst ammunition. It will explode on the FCS' zeroed in range.
## 2. Usage
### 2.1 Engaging moving targets
- Place the crosshair on the enemy vehicle.
- Press and hold TAB (ACE 3 default keybind `Lock Target [Hold]`) and follow the target for about 2 seconds.
- Release TAB.
- The optic is now adjusted sideways to ensue a hit.
### 2.2 Ranging stationary targets
- Place the crosshair on the object to range.
- Tap TAB the optic is now adjusted.
NOTE: GBU guidance is **DISABLED** as of ACE3 3.0.1
## 3. Dependencies
`ace_interaction`