# A320 CFDS Trainer — The Ultimate A320 CFDS Trainer

> A320 CFDS training tool for aircraft maintenance personnel. (iPhone/iPad app by ERM SIMS LLC.)

- Source: https://appshunter.io/ios/app/a320-cfds-trainer/id6451205574 (this page in markdown: same URL + `.md`)
- Developer: [ERM SIMS LLC](https://appshunter.io/developer/1697141250)
- Category: Education, Productivity
- Price: $19.99
- Rating: 5.00/5 from 2 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 103 MB
- Languages: American English
- Released: 2023-07-24
- Data updated: 2026-08-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/a320-cfds-trainer/id6451205574/reviews.md

## What is A320 CFDS Trainer?

Take your aircraft maintenance skills to the next level with this advanced training app designed by A&P professionals. This A320 CFDS Training Tool offers an immersive and realistic learning experience for mastering the Centralized Fault Display System (CFDS) on the A320.

***This app is not intended for pilots. The FMS pages are for reference only and are NOT interactive. This app is specifically designed as a training tool for maintenance personnel only.***

Key Features:

* Interactive BITE Menus: Simulate faults and perform BITE tests with adjustable wait times or fast 3-second timers.
* Realistic Fault Simulation: Input faults, navigate CFDS menus, generate authentic BITE messages, and Aural Alerts.
* CAT 3 LAND TEST & LRU Menu: Practice critical menu navigation.
* Post Flight Reports: Create and filter reports with or without faults.
* Normal & Ground Modes: Access the full CFDS system with dynamic avionics pages.
* Realistic Aural Alerts: Hear authentic BITE test audio for an immersive training experience.
* Learning View: Gain deeper insights into navigated pages for effective training and troubleshooting.
* Quick reference links to AirnavX for studying.
* Offline Access: No internet required (only for updates).
* No Ads: A distraction-free learning environment.
* Perfect for Maintenance Personnel: This app is designed specifically for A320 maintenance professionals. It’s ideal for independent learning or structured training.
* Classroom Approved: Perfect for use in classroom instruction, paired with AMM step-by-step procedures.
* AIDS: Coming Soon! 

Ongoing Updates: Regular content updates ensure you stay up to date with the latest A320 CFDS systems.

***This app is not intended for pilots. The FMS pages are for reference only and are NOT interactive. This app is specifically designed as a training tool for maintenance personnel only.***

Your purchase supports continuous app development—helping you enhance your skills while contributing to the ongoing improvement of this practical training tool.

Download the A320 CFDS Training Tool today!

ERM SIMS

## Key features

- Interactive BITE Menus
- Realistic Fault Simulation
- CAT 3 LAND TEST & LRU Menu
- Post Flight Reports
- Normal & Ground Modes
- Realistic Aural Alerts
- Offline Access

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/a320-cfds-trainer/id6451205574/reviews.md

### 5/5 — Excellent Trainer For What It’s Designed To Do.

*2025-11-20*

A great resource for review of input screens underlying the MCDU buttons. However, this is not an MCDU simulator for flight programming. It’s designed for technicians and training on the features of the MCDU MENU.

**Developer response:** Thank you the kind feedback

### 5/5 — Good Practice

*2025-01-25*

Great for learning in the class. I added faults and started looking up the troubleshooting task using the pfr so I can get better with the tsm. It was very confusing for me. Much thanks

### 1/5 — Don’t Waste Your Money

*2024-11-30*

Purchased this app to help me learn how to use the MCDU during training. Nothing works. Every input says “this feature is not simulated”. That applies to everything. This is a scam. If you want an image of an MCDU then pay for this app. Just know that’s all you get.

**Developer response:** This app is not designed for pilots, and the FMS (Flight Management System) functions are static rather than simulated. Nowhere in the app's description is it stated that it is intended for FMS training.
Additionally, menus related to maintenance can be accessed under MCDU MENU > CFDS.
We strongly encourage users to carefully read the app descriptions before making a purchase to ensure it meets their specific needs.

### 5/5 — Works

*2024-11-11*

Works as intended, helps me practice troubleshooting

### 1/5 — Disappointing

*2024-09-24, version 1.1.1*

Downloaded the app but can’t do much on it, just see the various pages of the MCDU. Would like a refund

### 1/5 — Scam

*2024-09-21, version 1.1.1*

The paid version is exactly the same as the Lite version. Can only see the different pages, without being able to enter any data.

### 5/5 — Maintenance friendly

*2024-08-30*

This app does a great job of replicating test procedures in the CFDS portion of the MCDU. There are so few pieces of software that address maintenance functions. Highly recommended for those who want more CFDS experience.

### 1/5 — Scam don’t buy

*2024-05-11*

Can’t add anything to the Mcdu. Lite version does the same

**Developer response:** Hello,

Thank you for reaching out. Could you please email us at support@ermsims.com so we can look into this further? There are several pages in CFDS > NAV that require input from the keypad to perform the Slew Test. Upon review on our end, the inputs to CFDS menus are functioning correctly. Any additional guidance or details from your side would be greatly appreciated.

Please note, due to the large number of pilots downloading the app for FMS training, the FMS pages are static and do not allow inputs. If this is the case and the app does not meet your needs, we kindly ask that you request a refund directly through the app store.

Thank you very much, and we look forward to assisting you further.

### 1/5 — Waste of money

*2024-05-10*

„Function not simulated“ is the sentence you re going to read if you try something.

**Developer response:** Thank you for your feedback. When interacting with the FMS portion of the app, the message "Function not Simulated" will appear because the app is not designed for pilots or flight training.
To address this common misunderstanding, we’ve added more clarifications within the app to help set expectations. While we understand there’s a demand for an FMS Trainer, this falls outside our scope as we focus exclusively on developing tools for maintenance personnel.
We appreciate your understanding, and if you have any further questions or feedback, feel free to reach out to us.

## Frequently asked questions about A320 CFDS Trainer

### What is A320 CFDS Trainer used for?

A320 CFDS Trainer is designed as a specialized tool for aircraft maintenance personnel to learn and practice using the Centralized Fault Display System (CFDS) on the A320 aircraft. It simulates faults and provides interactive menus for training.

### Is A320 CFDS Trainer suitable for pilots?

No, A320 CFDS Trainer is strictly for maintenance personnel. The FMS pages are for reference only and are not interactive, meaning it is not intended for pilot training.

### What are the key training features of A320 CFDS Trainer?

Key features include interactive BITE menus, realistic fault simulation with authentic aural alerts, CAT 3 LAND TEST & LRU Menu practice, and the ability to generate post-flight reports. It also offers normal and ground modes for comprehensive system access.

### Can I use A320 CFDS Trainer offline?

Yes, the app offers offline access for its core training functions. An internet connection is only required for app updates, ensuring a distraction-free learning environment.

### How often is A320 CFDS Trainer updated?

The app receives ongoing updates to ensure users stay current with the latest A320 CFDS systems. The last update was on 2025-10-13, indicating a commitment to regular content enhancements.

### What is the price of A320 CFDS Trainer?

A320 CFDS Trainer is a paid application, priced at $19.99. Your purchase supports the continuous development and improvement of this practical training tool.

### What devices is A320 CFDS Trainer compatible with?

A320 CFDS Trainer is compatible with iPhones, iPads, and iPods. It is designed to run on Apple's mobile operating systems.

### Does A320 CFDS Trainer have ads?

No, A320 CFDS Trainer is ad-free, providing a distraction-free learning environment for maintenance professionals. This allows for focused study and practice without interruptions.

## Version history (last 5 releases)

### 1.3.2 — 2025-10-13

- Fixed PFR update issue when selecting/deselecting faults.
- Fixed Welcome Screen not hiding at startup. 
- Added ATA 46 INFO SYS page for ATIMS & FOMAX. 
- Expanded fault lists with Class 3 and additional Class 1 faults. 
- Implemented initial backend support for AIDS/ALPA CALLUPs (ongoing work). 
- Backend optimizations.

### 1.3.1 — 2025-05-14

- Added Learning Pages.
- Updated text sized on various pages for consistency.
- Updated User Interface (UI) and Welcome screen.
- Replaced scratchpad message when users click on FMS input select keys to clarify this app is not a FMS trainer.

### 1.2.0 — 2025-01-27

* New: Added reference buttons for AMM, TSM, ASM to AirnavX.
* New: Added more faults! More coming soon!
* Update: Completed several learning pages.
* Fixed: Corrected inconsistencies in menus and UI.
* Fixed: Resolved troubleshooting data date & time mismatches.

### 1.1.3 — 2024-11-17

* iOS No Audio Fix (Engine Update introduced a bug).
* New: Added menus for the TOILET page.
* New: Completed CIDS menus ( ILLUMINATION & SYSTEM CONFIG)
* Fixed FONT in RMP MENUS.

### 1.1.2 — 2024-11-07

▷ Fixed LSK1 hitbox bug.
▷ Fixed CRC sound loop.
▷ Back-end code optimization.

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## More apps by ERM SIMS LLC

- [A320 CFDS Trainer Lite](https://appshunter.io/ios/app/a320-cfds-trainer-lite/id6451204364)
- [A320 FAP Simulator](https://appshunter.io/ios/app/a320-fap-simulator/id6739541181)

All apps by ERM SIMS LLC: https://appshunter.io/developer/1697141250

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*