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AMC1 ACNS.E.TAWS.075 Prioritisation schemes

Available versions for ERULES-1963177438-15819

ED Decision 2013/031/R found in: GM Remote Aerodrome Air Traffic Services (ED 2019/004/R) Issue 2 (Jul 2020)

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AMC1 ACNS.E.TAWS.075 Prioritisation schemes

ED Decision 2013/031/R

TAWS prioritisation schemes should be compliant with the content of Table 2:

<table border="1" cellpadding="0" cellspacing="0" width="603"><tr><td valign="top" width="84">Priority</td><td valign="top" width="322">Description</td><td valign="top" width="94">Alert Level</td><td valign="top" width="104">Comments</td></tr><tr><td valign="top" width="84">1</td><td valign="top" width="322">Reactive Windshear Warning</td><td valign="top" width="94">W</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">2</td><td valign="top" width="322">Sink Rate Pull-Up Warning</td><td valign="top" width="94">W</td><td valign="top" width="104">Continuous</td></tr><tr><td valign="top" width="84">3</td><td valign="top" width="322">Excessive Closure Pull-Up Warning</td><td valign="top" width="94">W</td><td valign="top" width="104">Continuous</td></tr><tr><td valign="top" width="84">4</td><td valign="top" width="322">RTC Terrain Warning</td><td valign="top" width="94">W</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">5</td><td valign="top" width="322">V1 Callout</td><td valign="top" width="94">A</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">6</td><td valign="top" width="322">Engine Fail Callout</td><td valign="top" width="94">W</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">7</td><td valign="top" width="322">FLTA Pull-Up Warning</td><td valign="top" width="94">W</td><td valign="top" width="104">Continuous</td></tr><tr><td valign="top" width="84">8</td><td valign="top" width="322">PWS Warning</td><td valign="top" width="94">W</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">9</td><td valign="top" width="322">RTC Terrain Caution</td><td valign="top" width="94">C</td><td valign="top" width="104">Continuous</td></tr><tr><td valign="top" width="84">10</td><td valign="top" width="322">Minimums</td><td valign="top" width="94">A</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">11</td><td valign="top" width="322">FLTA Caution</td><td valign="top" width="94">C</td><td valign="top" width="104">7 s period</td></tr><tr><td valign="top" width="84">12</td><td valign="top" width="322">Too Low Terrain</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">13</td><td valign="top" width="322">PDA ‘Too Low Terrain’ Caution</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">14</td><td valign="top" width="322">Altitude Callouts</td><td valign="top" width="94">A</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">15</td><td valign="top" width="322">Too Low Gear</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">16</td><td valign="top" width="322">Too Low Flaps</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">17</td><td valign="top" width="322">Sink Rate</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">18</td><td valign="top" width="322">Don’t Sink</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">19</td><td valign="top" width="322">Glideslope</td><td valign="top" width="94">C</td><td valign="top" width="104">3 s period</td></tr><tr><td valign="top" width="84">20</td><td valign="top" width="322">PWS Caution</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">21</td><td valign="top" width="322">Approaching Minimums</td><td valign="top" width="94">A</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">22</td><td valign="top" width="322">Bank Angle</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">23</td><td valign="top" width="322">Reactive Windshear Caution</td><td valign="top" width="94">C</td><td valign="top" width="104"></td></tr><tr><td valign="top" width="84">Mode 6</td><td valign="top" width="322">TCAS RA (‘Climb’, ‘Descent’, etc)</td><td valign="top" width="94">W</td><td valign="top" width="104">continuous</td></tr><tr><td valign="top" width="84">Mode 6</td><td valign="top" width="322">TCAS TA (‘Traffic, Traffic’)</td><td valign="top" width="94">C</td><td valign="top" width="104">Continuous</td></tr></table>

Table 2: Alert Prioritization Scheme

*Note 1: These alerts can occur simultaneously with TAWS voice callout alerts.*

*Note 2: W= Warning, C= Caution, A= Advisory.*

TAWS internal priority alerting scheme should be compliant with the content of Table 3 below

<table border="1" cellpadding="0" cellspacing="0" width="603"><tr><td valign="top" width="84">Priority</td><td valign="top" width="520">Description</td></tr><tr><td valign="top" width="84">1</td><td valign="top" width="520">Sink Rate Pull-Up Warning</td></tr><tr><td valign="top" width="84">2</td><td valign="top" width="520">Terrain Awareness Pull-Up warning</td></tr><tr><td valign="top" width="84">3</td><td valign="top" width="520">Terrain Awareness Caution</td></tr><tr><td valign="top" width="84">4</td><td valign="top" width="520">PDA ‘Too Low Terrain’ Caution</td></tr><tr><td valign="top" width="84">5</td><td valign="top" width="520">Altitude Callouts ‘500’</td></tr><tr><td valign="top" width="84">6</td><td valign="top" width="520">Sink Rate</td></tr><tr><td valign="top" width="84">7</td><td valign="top" width="520">Don’t Sink (Mode 3)</td></tr></table>

TABLE 3: TAWS Internal Alert Prioritization Scheme