# Simplified CDM Procedures (APP/CTR)

## Starting CDM (All Controllers)

As the first thing when you log on you must activate CDM to use it

<p class="callout success">Write **.cdm master EKCH** to activate!</p>

[![image.png](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2025-12/scaled-1680-/Hwtimage.png)](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2025-12/Hwtimage.png)

## How to do controller change correctly

1. The Old controller changes to Slave with command .cdm slave EKCH
2. Once there are no master controllers, the new controlles gets the master "role" by writing .cdm master EKCH

## Simplified CDM Procedures (Top-down by APP/CTR)

<p class="callout info">This part of CDM is known as the ATFCM</p>

Simplified CDM procedures are done from departure list. Please know that:

- You <span style="text-decoration: underline;">**are** </span>completely allowed to perform expanded CDM procedures if your capacity allows
- You <span style="text-decoration: underline;">**MUST** </span>adhere to displayed CTOT for takeoff
- You <span style="text-decoration: underline;">**may** </span>ignore TSATs without CTOTs, if workload is too heavy.

### <span style="color: rgb(52, 73, 94);">Reference Material</span>

<p class="callout warning">Press on the top of the <span style="text-decoration: underline;">TSAT column </span>where it says TSAT! This orders the departure list after TSATs and makes it easier to manage</p>

<p class="callout success">Actions for simplified CDM procedures are identical as expanded, but with more freedom</p>

You departure list now features a TOBT, a TSAT and a CTOT.

[![image.png](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2025-12/scaled-1680-/Ld3image.png)](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2025-12/Ld3image.png)

<span style="color: rgb(52, 73, 94);">TOBT shows the estimated time of departure filed by the pilot. </span>

- <span style="background-color: rgb(191, 237, 210);">TOBT:</span> Is Light green when the time is valid but not yet within the window for startup.
- <span style="background-color: rgb(45, 194, 107);">TOBT: </span>Is Dark green when the time is within time for startup approval.

- <span style="background-color: rgb(191, 237, 210);">TSAT:</span> Is Light green when the time is valid but not yet within the window for startup.
- <span style="background-color: rgb(45, 194, 107);">TSAT: </span>Is Dark green when the time is within time for startup approval.
- <span style="background-color: rgb(241, 196, 15);">TSAT: </span>Is Yellow when the time is within 1 minute from expiring
- TSAT is blank if time is expired.

- CTOT: Is <span style="background-color: rgb(45, 194, 107);">Green</span>, <span style="background-color: rgb(230, 126, 35); color: rgb(236, 240, 241);">Orange </span>or <span style="background-color: rgb(224, 62, 45); color: rgb(236, 240, 241);">Red </span>depending on the type of restriction triggering the CTOT.

### <span style="color: rgb(52, 73, 94);">Procedures</span>

<details id="bkmrk-aircraft-calls-for-a"><summary>Aircraft calls for ATC Clearance</summary>

If **CTOT** is present: Advise of CTOT. You MUST in this case adhere to the TSAT. <span style="text-decoration: underline;">**Advise pilot about CTOT!**</span>

If no **CTOT**: No further action required at this stage

</details><details id="bkmrk-aircraft-calls-for-s"><summary>Aircraft calls for STARTUP/PUSHBACK</summary>

- Right click on TOBT to signal aircraft ready for startup.

if CTOT is present:

- Adhere to TSAT Displayed . If TSAT is not yet within startup window (<span style="background-color: rgb(191, 237, 210);">Light green</span>), pilot must wait.
- When TSAT is within startup window (<span style="background-color: rgb(45, 194, 107);">Dark Green</span>) (+/- 5min) Start-up can be approved.

if no CTOT is present

- Start and push can be approved, regardless of TSAT time
- Be aware that non-adherance to TSATs may result in longer waiting times at the runway.

</details>## Explanations

NIL