ERM Sims LLC  is a software development company focused on creating training tools for aviation maintenance professionals. We understand the importance of staying current in this industry, and are committed to providing easy-to-use software that helps aviation professionals do just that. Our team is dedicated to continuously improving our tools to meet the evolving needs of maintenance personnel. We are proud to support the crucial work of these professionals and are committed to providing the resources they need to succeed.

Our Mobile Products

A320 CFDS Maintenance Trainer

Status : Released

Now available on Google Play

Now available on iOS

For aviation maintenance professionals committed to the highest standards of expertise, we present the Ultimate A320 CFDS Training Trainer. Go beyond basic training with an advanced, in-depth exploration of the CFDS. Our sophisticated tool empowers you with BITE functionality, analytical capabilities, and real-world scenarios. Sharpen your skills and enhance your understanding of CFDS with this indispensable resource, meticulously designed to equip you for the complexities of aircraft maintenance – no on-board practice necessary. Invest in quality, precision, and efficiency with the A320 CFDS Maintenace Trainer.

Main Features:

Get New Updates first hand before the LITE version.

Full BITE & GROUND Test menus with faults or no faults.

Realistic BITE wait time or skip to a 3 second fast timer.

MCDU Keyboard inputs for BITE test and CFDS Menus.

Flap handle control to simulate flap movement (Specific to Slat & Flap PPU).

CAT3 Land Test Menu.

Full Type 1, 2, and 3 LRU menu navigation.

Real part numbers in LRU Identification pages.

Most up-to-date CFDS menus.

Get more info on FMS pages (For maintenance understanding).

Add multiple faults.

Create a PFR with and without faults.

Filter a PFR.

CFDS Menu Mode (Ground) and Normal Modes (Flight).

CFDS Last leg and Last Leg Ecam pages, including previous legs reports.

Dynamic Avionics Page (Shows Class 1, 2, and 3 faults).

Real BITE Test Aural alerts.

No Internet Required.

Compatible with Android Emulators for seamless studying. Tutorial Here


 View Release Notes

A320 CFDS Maintenance Trainer Lite

Status : Released

Now available on Google Play 

Now available on iOS

Welcome to the LITE version of the A320 MCDU Simulator, meticulously crafted by maintenance professionals, for maintenance professionals. This edition includes the latest options, and is perfect for those who want to acquaint themselves with the core functions of the A320 CFDS.

Main Features:

Basic creation of PFR (with or without faults).

Effortless navigation through CFDS System test menus and submenus.

Access to both CFDS Normal and Menu Modes.

Exploration of Static FMS menus.

Dive into ATSU (ATC & AOC Com) Menus.

Optimized for older hardware.

Compatible with Android Emulators for seamless studying. Tutorial Here

Zero distractions – No Ads, ever.

No Internet Required.


 View Release Notes

A320 FAP Trainer

Status : In Developement - Coming Summer 2024

Coming soon to Google Play 

Coming soon to iOS

Get ready to elevate your training experience with the latest addition to our family of trainers - the A320 FAP Trainer! Designed with maintenance professionals in mind, this cutting-edge trainer is perfect for those who want to take their skills to the next level.

Main Features:

Full FAP Simulator with Blue Cards (Faults).

Full MCDU Menu.

Flight and Ground Modes.

Learn how to update OBRM Software.

Select aircraft type including the A321ACF.

Zero distractions – No Ads, ever.

No Internet Required.