# LG WRN INHIB and ADS Probes Heater

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/lg-wrn-inhib-and-ads-probes-heater-button-image-hb8qzx1x.png)

### LANDING GEAR WARNING INHIBITION BUTTON (GUARDED-MOMENTARY ACTION) <a href="#toc118376712" id="toc118376712"></a>

* <mark style="color:red;">Inhibits the landing gear aural warning in the event of dual radio altimeter failure only if the SLAT/FLAP lever is in the 0, 1, 2, 3 or 4 position.</mark>
* <mark style="color:red;">White striped bar when pushed will extinguish if:</mark>
  * <mark style="color:red;">Thrust levers are advanced beyond a pre-determined mid-range position.</mark>
  * <mark style="color:red;">Flap selector lever is set to 5 or full without any landing gear down and locked.</mark>

### LANDING GEAR AURAL WARNING <a href="#toc118376713" id="toc118376713"></a>

* “LANDING GEAR” aural warning cannot be silenced in the following situations:
  * SLAT/FLAP lever in a landing position (5 or FULL)
    * Regardless of thrust lever position and radio altitude.
  * SLAT/FLAP lever in 0 to 4 position
    * Radio altitude below 700ft AGL, and
    * Thrust lever is set below a pre-determined mid-range position.

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/lg-wrn-inhib-and-ads-probes-heater-button-image-0h24y390.png)

### ADS PROBES HEATER BUTTON <a href="#toc118376714" id="toc118376714"></a>

* <mark style="color:red;">PUSH IN: activates the ADS probes heater.</mark>
* <mark style="color:red;">PUSH OUT: the ADS probes heater operates in AUTO mode.</mark>